Microchip Technology dsPICDEM MCHV-2 User Manual

dsPICDEM™ MCHV-2

Development Board

User’s Guide

 2012 Microchip Technology Inc. DS52074A

Note the following details of the code protection feature on Microchip devices:

YSTEM

CERTIFIED BY DNV

== ISO/TS 16949 ==

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC,
K

EELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,

32

PIC

logo, rfPIC and UNI/O are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, chipKIT,
chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net,
dsPICworks, dsSPEAK, ECAN, ECONOMONITOR,
FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP,
Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB,
MPLINK, mTouch, Omniscient Code Generation, PICC,
PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE,
rfLAB, Select Mode, Total Endurance, TSHARC,
UniWinDriver, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.

SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.

All other trademarks mentioned herein are property of their
respective companies.

© 2012, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.

Printed on recycled paper.

QUALITY MANAGEMENT S

DS52074A-page 2  2012 Microchip Technology Inc.

ISBN: 978-1-62076-406-0

Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.

®

MCUs and dsPIC® DSCs, KEELOQ

®

code hopping

 2012 Microchip Technology Inc. DS52074A-page 3

dsPICDEM™ MCHV-2 Development Board User’s Guide

NOTES:

DS52074A-page 4  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

BOARD USER’S GUIDE

Safety Notice

The safety notices and operating instructions provided should be adhered to, to avoid
a safety hazard. If in any doubt, consult your supplier.

WARNING – This system must be earthed (grounded) at all times.

WARNING – The output terminals are NOT isolated from the incoming AC mains

supply and may be at up to 410V with respect to ground, regardless of the input mains
supply voltage applied. These terminals are live during operation AND for five minutes
after disconnection from the supply. Do not attempt to access the terminals or remove
the cover during this time.

WARNING – The unit may obtain power through the output terminals if these are
connected to a rotating motor acting as a generator. If this is the case, then the previous
warning also applies (i.e., the output terminals are live when connected to the genera­tor and for five minutes after the generator has been stopped). Note that this case can
arise even when the unit has been disconnected from the incoming AC mains supply.

CAUTION – The system should not be installed, operated, serviced or modified except
by qualified personnel who understand the danger of electric shock hazards and have
read and understood the user instructions. Any service or modification performed by
the user is done at the user’s own risk and voids all warranties.

CAUTION – If a motor is connected to the output of this unit, the frame should be
connected to the output protective ground terminal provided. Particular care should be
taken to mechanically guard such a motor, bearing in mind that unexpected behavior
is likely to result from the process of code development.

CAUTION – For continued protection against the risk of fire, replace the fuse with one
of the same type only (i.e., Fast Act Fuse 15A/250V).

• The system is intended for evaluation and development purposes and should only
be operated in a normal laboratory environment as defined by IEC 61010-1:2001

• Clean with a dry cloth only

• Operate flat on a bench, do not move during operation and do not block the
ventilation holes

• The system should not be operated without all the supplied covers fully secured in
place

• The system should not be connected or operated if there is any apparent damage
to the unit

• The unit is designed to be connected to the AC mains supply via a standard non­locking plug. As the unit has no mains switch, this plug constitutes the means of
disconnection from the supply and thus the user must have unobstructed access
to this plug during operation.

 2012 Microchip Technology Inc. DS52074A-page 5

dsPICDEM™ MCHV-2 Development Board User’s Guide

NOTES:

DS52074A-page 6  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

Table of Contents

Chapter 1. Introduction

1.1 Overview ...................................................................................................... 15

Chapter 2. Getting Started

2.1 Board Components ...................................................................................... 21

2.2 User Interface ............................................................................................... 22

2.3 Connecting the System ................................................................................ 23

2.4 Power Sequences ........................................................................................ 27

Chapter 3. Running the Demonstration

Chapter 4. Hardware

4.1 Power Factor Correction (PFC) Stage Board ............................................... 35

4.2 Power Module Stage .................................................................................... 40

4.3 Electrical Specifications ................................................................................ 49

Appendix A. Board Layout and Schematics

BOARD USER’S GUIDE

Appendix B. Debugging and Troubleshooting with MPLAB® 8

B.1 Setting up an Application for Debugging ...................................................... 65

B.2 Running the Application ............................................................................... 66

B.3 Debugging the Application ........................................................................... 67

B.4 Programming an Application ........................................................................ 69

B.5 Determining Device Support and Reserved Resources .............................. 70

B.6 Troubleshooting ........................................................................................... 70

B.7 Settings Dialog and Info Tab ........................................................................ 70

 2012 Microchip Technology Inc. DS52074A-page 7

dsPICDEM™ MCHV-2 Development Board User’s Guide

NOTES:

DS52074A-page 8  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

BOARD USER’S GUIDE

Preface

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs and/
or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.

Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the
document.

For the most up-to-date information on development tools, see the MPLAB
Select the Help menu, and then Topics to open a list of available on-line help files.

INTRODUCTION

®

IDE on-line help.

This preface contains general information that will be useful to know before using the
dsPICDEM™ MCHV-2 Development Board. Topics discussed in this preface include:

• Document Layout

• Conventions Used in this Guide

• Warranty Registration

• Recommended Reading

• The Microchip Web Site

• Development Systems Customer Change Notification Service

• Customer Support

• Document Revision History

DOCUMENT LAYOUT

This user’s guide describes how to use the dsPICDEM™ MCHV-2 Development
Board. The document is organized as follows:

• Chapter 1. “Introduction” – This chapter introduces the dsPICDEM™ MCHV-2
Development Board and provides a brief overview of its features.

• Chapter 2. “Getting Started” – This chapter provides information on getting
started with the dsPICDEM™ MCHV-2 Development Board.

• Chapter 3. “Running the Demonstration” – This chapter describes the
demonstration software that is preloaded on the device that accompanies the
dsPICDEM™ MCHV-2 Development Board.

• Chapter 4. “Hardware” – This chapter describes the hardware on the
dsPICDEM™ MCHV-2 Development Board.

• Appendix A. “Board Layout and Schematics” – This appendix provides
diagrams of the hardware layout, as well as schematic diagrams for the
dsPICDEM™ MCHV-2 Development Board.

• Appendix B. “Debugging and Troubleshooting with MPLAB
appendix provides debug and programming guidance for MPLAB 8 users.

®

8” – This

 2012 Microchip Technology Inc. DS52074A-page 9

dsPICDEM™ MCHV-2 Development Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic characters Referenced books MPLAB® IDE User’s Guide

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog
A menu selection select Enable Programmer

Quotes A field name in a window or

dialog

Underlined, italic text with
right angle bracket

Bold characters A dialog button Click OK

N‘Rnnnn A number in verilog format,

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New Sample source code #define START

Italic Courier New A variable argument file.o, where file can be

Square brackets [ ] Optional arguments mcc18 [options] file

Curly braces and pipe
character: { | }

Ellipses... Replaces repeated text var_name [,

A menu path File>Save

A tab Click the Power tab

where N is the total number of
digits, R is the radix and n is a
digit.

Filenames autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-line options -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’

Choice of mutually exclusive
arguments; an OR selection

Represents code supplied by
user

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options]

errorlevel {0|1}

var_name...]

void main (void)
{ ...
}

DS52074A-page 10  2012 Microchip Technology Inc.

WARRANTY REGISTRATION

Please complete the enclosed Warranty Registration Card and mail it promptly.
Sending in the Warranty Registration Card entitles users to receive new product
updates. Interim software releases are available at the Microchip web site.

RECOMMENDED READING

This user’s guide describes how to use the dsPICDEM™ MCHV-2 Development Board.
The device-specific data sheets contain current information on programming the specific
microcontroller or digital signal controller devices. Other useful documents are listed
below. The following Microchip documents are available and recommended as
supplemental reference resources:

MPLAB® C Compiler for PIC24 MCUs and dsPIC® DSCs User’s Guide
(DS51284)

This comprehensive guide describes the usage, operation and features of Microchip’s
MPLAB C compiler (formerly MPLAB C30) for use with 16-bit devices.

MPLAB® IDE User’s Guide (DS51519)

This user’s guide describes how to set up the MPLAB IDE software and use it to create
projects and program devices.

Preface

MPLAB X IDE User’s Guide (DS52027)

This document describes how to setup the MPLAB X IDE software and use it to create
projects and program devices.

MPLAB® Assembler, Linker and Utilities For PIC24 MCUs And dsPIC®
DSCs User’s Guide (DS51317)

This user’s guide describes the usage, operation, and features of the MPLAB® Assem­bler for PIC24 MCUs and dsPIC
relocatable machine code from symbolic assembly language for the PIC24 MCU and
dsPIC DSC families of devices. The assembler is a Windows console application that
provides a platform for developing assembly language code. The assembler is a port
of the GNU assembler from the Free Software Foundation.

®

DSCs (formerly MPLAB ASM30), which produces

Readme Files

For the latest information on using other tools, read the tool-specific Readme files in the
Readme subdirectory of the MPLAB IDE installation directory. The Readme files contain
updated information and known issues that may not be included in this user’s guide.

dsPIC33EP256MC506 Plug-In Module (PIM) for Internal Op amp
Configuration Information Sheet (DS52062)

This document provides device specific information for the dsPIC33EP256MC506
Internal Op amp configuration PIM.

To obtain any of these documents, visit the Microchip web site at www.microchip.com.

 2012 Microchip Technology Inc. DS52074A-page 11

dsPICDEM™ MCHV-2 Development Board User’s Guide

THE MICROCHIP WEB SITE

Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:

• Product Support – Data sheets and errata, application notes and sample

programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software

• General Technical Support – Frequently Asked Questions (FAQs), technical

support requests, online discussion groups, Microchip consultant program
member listing

• Business of Microchip – Product selector and ordering guides, latest Microchip

press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE

Microchip’s customer notification service helps keep customers current on Microchip
products. Subscribers will receive e-mail notification whenever there are changes,
updates, revisions or errata related to a specified product family or development tool of
interest.

To register, access the Microchip web site at www.microchip.com, click on Customer
Change Notification and follow the registration instructions.

The Development Systems product group categories are:

• Compilers – The latest information on Microchip C compilers and other language

tools. These include the MPLAB
assemblers; MPLINK™ and MPLAB 16-bit object linkers; and MPLIB™ and
MPLAB 16-bit object librarians.

• Emulators – The latest information on the Microchip MPLAB REAL ICE™

in-circuit emulator.

• In-Circuit Debuggers – The latest information on the Microchip in-circuit

debugger, MPLAB ICD 3.

• MPLAB IDE – The latest information on Microchip MPLAB IDE, the Windows

Integrated Development Environment for development systems tools. This list is
focused on the MPLAB IDE, MPLAB SIM simulator, MPLAB IDE Project Manager
and general editing and debugging features.

• Programmers – The latest information on Microchip programmers. These include

the MPLAB PM3 device programmer and the PICkit™ 3 development
programmers.

®

C compiler; MPASM™ and MPLAB 16-bit

®

DS52074A-page 12  2012 Microchip Technology Inc.

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.

Technical support is available through the web site at: http://support.microchip.com

DOCUMENT REVISION HISTORY

Revision A (July 2012)

This is the initial released version of the document.

Preface

 2012 Microchip Technology Inc. DS52074A-page 13

dsPICDEM™ MCHV-2 Development Board User’s Guide

NOTES:

DS52074A-page 14  2012 Microchip Technology Inc.

1.1 OVERVIEW

The Microchip dsPICDEM MCHV-2 Development Board is intended to aid the user in
the rapid evaluation and development of a wide variety of motor control applications
using PIC24 Microcontrollers (MCUs) and dsPIC
This development system is targeted to control Brushless DC (BLDC) motors, Perma­nent Magnet Synchronous Motors (PMSM), and AC Induction Motors (ACIM) in sensor
or sensorless operation.

This flexible and cost-effective tool can be configured in different ways for use with
Microchip’s specialized Motor Control devices. The dsPICDEM MCHV-2 Development
Board is essentially a backward-compatible upgraded version of the dsPICDEM MCHV
Development System. The dsPICDEM MCHV-2 Development Board is designed to
support the PIC24F, PIC24E, dsPIC33F, and dsPIC33E Motor Control device families,
and offers a mounting option to connect a generic 100-pin Plug-In Module (PIM).

The system has a three-phase power module device that contains the motor inverter
and the gate driver’s circuitry. The circuit drives a BLDC, PMSM, or ACIM motor using
different control techniques without requiring any additional hardware. It also has
Power Factor Correction (PFC) circuitry in order to provide a full set of tools used in
motor control applications. Figure 1-1 provides a photograph of the dsPICDEM MCHV-

2. A block diagram that shows the main components of the system is provided in

Figure 1-2.

The rated continuous output current from the inverter is 6.5A (RMS). This allows up to
approximately 2 kVA output when running from a 208V to 230V single-phase input volt­age in a maximum 30ºC (85ºF) ambient temperature environment. Therefore, the sys­tem is ideally suited for running a standard 3-Phase Induction Motor of up to 1.4 kW
(1.8 HP) rating or a slightly higher rated industrial servo-motor. The power module is
capable of driving other types of motors and electrical loads that do not exceed the
maximum power limit and are predominantly inductive. Furthermore, single-phase
loads can be driven using one or two of the inverter outputs.

The unit is capable of operating from 90V up to a maximum of 265V. A more detailed
explanation of power limitations is provided in Chapter 4. “Hardware”.

dsPICDEM™ MCHV-2 DEVELOPMENT

BOARD USER’S GUIDE

Chapter 1. Introduction

®

Digital Signal Controllers (DSCs).

Note: It is recommended to carefully read the hardware section mentioned above

before attempting to use the system.

 2012 Microchip Technology Inc. DS52074A-page 15

dsPICDEM™ MCHV-2 Development Board User’s Guide

FIGURE 1-1: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD

DS52074A-page 16  2012 Microchip Technology Inc.

 2012 Microchip Technology Inc. DS52074A-page 17

PFC Feedback Signals

15V, 3.3V, A-3.3V

PFC PWM

VBUS

15V PSU

3.3VA-3.3V

PFC Circuitry

PFC Current

Feedback

Circuitry

VAC Zero

Crossing

VAC Voltage

Feedback

EMI Choke,

In-rush current

protection, FUSE

90V-265V

Rectifier

PFC Fault

dsPIC® DSC

Power

Alternative

15V PSU

Alternative

3.3V/A3.3V

Isolated User Interface

RS-232/

USB

Starter Kit

POT, PB, RESET

Current

Feedback

Circuitry

HALL

Sensors

Voltage

Feedback

Circuitry

(VBUS and Motor)

Fault

Non-isolated

ICSP™ connector

Hall

Sensors

MOTOR

External

Programmer/

Debugger

R

X

ICSP

commands

T

X

User

Interface

PFC Stage Board

Power Module Board

Circuitry

Circuitry

Module

PIC24 MCU

Matrix
Board

or

on Board

FIGURE 1-2: SYSTEM BLOCK DIAGRAM

Introduction

dsPICDEM™ MCHV-2 Development Board User’s Guide

1.1.1 Features

This section provides some of the key features of the dsPICDEM MCHV-2 Development
Board.

Motor Control Interfaces:

• Three-phase inverter bridge with a power rating of 400V/6.5A (J17)

• Hall sensors/Quadrature Encoder Interface (QEI) for sensored motor control
algorithms (J9)

• Phase voltage feedback for sensorless BLDC operation

• DC bus current sense resistor for single shunt vector control

• Phase current sense resistor for dual shunt vector control

• Overcurrent protection

• Support for PIC24 MCUs and dsPIC DSCs with internal op amps and comparators

Input/Output:

- One isolated push button (S1)

- Isolated reset push button (RESET)

- Isolated 10 k potentiometer (POT1)

- LED indicators for PWM outputs

- Two LED indicators for debugging purposes (D2 and D19)

Isolated Communication Ports:

- UART communication via USB (J6)

- UART communication via RS-232 (J8)

Built-In Isolated Programmer/Debugger (J20):

- Starter Kit on Board programmer/debugger (daughter board)

Power Supply Connectors:

- Power Tab Fast-On connectors (BP1 and BP2) for the power stage

- Auxiliary 24V power input connector (J15) for the PIC24 MCU or dsPIC DSC

device and low-power circuitry (non-populated)

- Auxiliary 15V and 3.3V regulators for regulating auxiliary power supply (non-

populated)

Programming Connectors:

- ICSP™ connector for programming a PIC24 MCU or dsPIC DSC device

(J18), non-isolated

- ICSP connector for programming the PIC18LF2450 USB module to the UART

Bridge (J1), isolated

- ICSP connector for programming the Starter Kit on Board Programmer/

Debugger, isolated (J1)

DS52074A-page 18  2012 Microchip Technology Inc.

Introduction

Power Factor Corrector:

- Maximum input voltage 90 VAC-265 VAC

- Current Feedback circuitry

- VAC input voltage sensing

- Zero-crossing detection

- DC bus sensing

- Overcurrent protection (The maximum power available is specified in

Section 4.3 “Electrical Specifications”.)

Built-In Power Supplies:

- 15V power supply, maximum power available 11W

- 3.3V power supply, maximum power available 2W

Additional Protection Circuitry:

-250VAC/15A fuse

- In-rush current limiter

- EMI filter

 2012 Microchip Technology Inc. DS52074A-page 19

dsPICDEM™ MCHV-2 Development Board User’s Guide

NOTES:

DS52074A-page 20  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

BOARD USER’S GUIDE

Chapter 2. Getting Started

2.1 BOARD COMPONENTS

The dsPICDEM MCHV-2 Development Board consists of two stages:

• PFC Stage
The first stage is integrated by the Power Factor Correction (PFC) circuitry, the

full-bridge rectifier, the 15V power supply, and the 3.3V power supply.

• Power Module Stage
The second stage is the power module board. This board contains the Plug-In

Module (PIM) connector, the isolated user interface connectors, and the motor
drive.

Figure 2-1 shows an interior view.

FIGURE 2-1: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD ENCLOSURE VIEW

 2012 Microchip Technology Inc. DS52074A-page 21

dsPICDEM™ MCHV-2 Development Board User’s Guide

J8

J6

J20

S1

POT1

Reset

PWM LED
Indicators

J7

J2,J3

2.2 USER INTERFACE

The dsPICDEM MCHV-2 has the following components to interact with the user.

Figure 2-2 shows a photograph of the front of the system.

• Input/Output Control Switches (Figure 2-2):

- One isolated push button (S1)

- Isolated reset push button (RESET)

- Isolated 10 kΩ potentiometer (POT1)

- LED indicators for PWM outputs

- Two LED indicators for debugging purposes (D2 and D19 on the Power
Module Board; not shown in Figure 2-2)

• PWM Outputs (Figure 2-2)

- Enable and disable jumpers (J7)

• Isolated Communication Ports (Figure 2-2):

- UART communication via USB (J6)

- UART communication via RS-232 (J8)

- Communication Ports Selector (J2, J3)

• Built-In Isolated Programmer/Debugger (Figure 2-2)

- Starter Kit type programmer/debugger (J20)

• Motor Connectors (Figure 2-4):

- Three-phase inverter bridge connector with a power rating of 400V/6.5A (J17)

- Hall sensors/Quadrature encoder interface for sensored motor control
algorithms (J9)

• Power Supply Connector (Figure 2-3)

- AC power inlet specified for 40VAC-220VAC 10Amps max (J1)

FIGURE 2-2: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD (FRONT)

DS52074A-page 22  2012 Microchip Technology Inc.

Getting Started

FIGURE 2-3: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD (LEFT SIDE)

FIGURE 2-4: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD (RIGHT SIDE)

2.3 CONNECTING THE SYSTEM

CAUTION

The user must be aware of the operating procedures outlined below and ensure that
they are followed. Failure to do so may result in damage to the system.

2.3.1 Power Connections

It is recommended that cables used for the power connections should be terminated
with blue or red insulated crimp terminals. If crimp terminals are not used, care should
be taken to ensure that stray strands of wire do not short to adjacent terminals or the
enclosure. If possible, all wires should be stripped and tinned with solder before
connecting to the dsPICDEM™ MCHV-2 Development Board terminals.

 2012 Microchip Technology Inc. DS52074A-page 23

dsPICDEM™ MCHV-2 Development Board User’s Guide

For the AC mains supply input, standard double-insulated, 3-core flex cable should be
used with a minimum current rating of 10A (1 mm

2

18 AWG). A computer power cable

can be used.

Note: The system is designed for installation category II. Therefore, the incoming

mains cable should be wired into a standard non-locking 2-pin in addition
with a earth ground type plug.

The recommended output cable size is 1.0 to 1.5 mm

2

(18-16 AWG) and it should have

a 600V rating. This cable should also be double insulated or have a protective ground
screen. Access to the terminal screws is provided via holes in the lid of the enclosure.
A slotted screwdriver should be used.

Note: The user should only access the power terminals when the system is fully

discharged (see the“Safety Notice” on page 5).

Figure 2-7 provides the locations of all connectors. Corresponding tables that describe

each connection are provided in the relevant section.

FIGURE 2-5: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD CONNECTIONS

The power connections are listed in Tab le 2- 1.

DS52074A-page 24  2012 Microchip Technology Inc.

Getting Started

TABLE 2-1: POWER CONNECTIONS

Number Name Type

1 Neutral Input

2 Earth Ground Input

3 Live (Fused) Input

4 Motor Phase 1 (M1) Output

5 Motor Phase 2 (M2) Output

6 Motor Phase 3 (M3) Output

7 Hall Sensor A (HA) Input

8 Hall Sensor B (HB) Input

9 Hall Sensor C (HC) Input

10 Hall Sensors, 5V power supply terminal Output

11 Hall Sensors, Ground terminal Output

2.3.2 Host/Communication Connections

A mini-USB-to-USB certified cable and a standard DB9 male-to-female cable should
be used to connect the dsPICDEM™ MCHV-2 Development Board to the host
computer.

The communication port connectors are listed in Tab l e 2 -2 . Refer to Figure 2-5 for their
exact location.

TABLE 2-2: I/O CONNECTORS

Number Name Type

12 USB-to-UART connector Input/Output

13 RS-232- to-UART connector Input/Output

14 USB connector for the Starter Kit on Board programmer/debugger Input/Output

15 Non-isolated ICSP™ connector for device programming/debugging Input/Output

16 Matrix board Input/Output

2.3.3 Connection Sequence

The recommended connection sequence is listed below. The user should ensure that
the following sequence is met before connecting the system to the mains, a motor and
a host computer.

Note: Before making any connection, verify that the system is not powered and it

is fully discharged. The system is completed discharged when the red LED
D13 is OFF.

1. Connect the motor terminals R, Y, and B (also known as RWB or 123 or ABC) to

the connection nodes M1, M2, and M3 (4, 5, and 6 in Figure 2-5), respectively.

2. Follow the next steps if position sensors are utilized to control the motor. If not,

proceed to step 3.
a) If the motor position is sensed with Hall Sensors, connect the terminals A, B,

and C to the connection nodes HA, HB, and HC (7, 8, and 9 in Figure 2-5),
respectively. Also, connect the positive terminal +5V to the connection node
+5V and the ground terminal to the connection node GND (10 and 11 in

Figure 2-5).

b) If the motor position is sensed with a Quadrature Encoder, connect the ter-

minals phase A, phase B, and Index to the connection nodes HA, HB, and
HC (7, 8, and 9 in Figure 2-5), respectively.

 2012 Microchip Technology Inc. DS52074A-page 25

dsPICDEM™ MCHV-2 Development Board User’s Guide

3. Connect the communication ports.
a) If RS-232 communication is used, connect the DB9 male connector to the

RS-232 port. Connect the other end to the host PC (12 in Figure 2-5).

b) If USB communication is used, connect the mini-USB male terminal to the

mini-USB female connector labeled “USB” (12 in Figure 2-5). Connect the
other end to the host PC.

Note: The Microchip serial emulator driver (mchpcdc.inf) should be installed on

your PC in order to activate the USB-to-Serial emulator. The emulator can
be obtained from the dsPICDEM MCHV-2 Development Board product
page: http://www.microchip.com/mchv2

4. Connect the USB cable to the mini-USB female connector labeled
“Program/Debug” (14 in Figure 2-5). Connect the USB male terminal to the USB
ports of the host PC.

Note: The built-in programmer/debugger is supported in MPLAB IDE Version

8.83 (or higher) and MPLAB X Version 1.10 (or higher).

5. Ensure that the appropriate matrix board is plugged into the connector labeled
J4 and that the board is oriented so that its pins are correctly lined up, as shown
in Figure 2-6. Refer to Section 4.2.5 “Matrix Board” for more information
regarding the matrix board.

FIGURE 2-6: MATRIX BOARD CONNECTION

6. Power Cord connection. Make sure the power cord is disconnected from the AC
mains before connecting the female terminal of the power cable to the AC input
connector (1, 2, and 3 in Figure 2-5) of the dsPICDEM™ MCHV-2 Development
Board.

Note: The unit is designed to be connected to the AC mains supply via a standard

non-locking plug. As the unit has no mains switch, this plug constitutes the
means of disconnection from the supply. Therefore, the user must have
unobstructed access to this plug during operation.

DS52074A-page 26  2012 Microchip Technology Inc.

2.4 POWER SEQUENCES

The user should ensure that the following power sequences are adhered to.

2.4.1 Power-up Sequence

The unit is powered-up when the power cable is connected to the AC mains. To verify
that the unit is powered make sure that the LEDs D6, D13, D17 and D18 are ON.

Note: The unit is designed to be connected to the AC mains supply via a standard

non-locking plug. As the unit has no mains switch, this plug constitutes the
means of disconnection from the supply and thus the user must have
unobstructed access to this plug during operation.

2.4.2 Power-down Sequence

1. Stop firing all power devices by removing the PWM OUTPUTS shunt jumper.

2. Turn OFF the incoming AC supply by disconnecting the power cord from the

mains.

3. Wait until the red DC bus LED indicator (D13) located next to the DC bus

connector is no longer illuminated (this will take 5 minutes or less).

2.4.3 Programming/Debugging an Application Code Using the

Built-in Starter Kit on Board Programmer/Debugger

Getting Started

The MPLAB Starter Kit on Board Programmer/Debugger for the dsPICDEM™ MCHV-2
Development Board may be used with MPLAB X, the free integrated development envi­ronment, which is available from Microchip’s web site (www.microchip.com). MPLAB X
allows the Starter Kit on Board to be used as an in-circuit debugger as well as a
programmer.

In-circuit debugging allows you to run, examine and modify your program using the
Starter Kit on Board hardware. This greatly assists you in debugging your firmware and
hardware together.

Special Starter Kit on Board software interacts with the MPLAB X application to run,
stop, and single-step through programs. Breakpoints can be set and the processor can
be reset. Once the processor is stopped, the register’s contents can be examined and
modified.

Note: Refer to Appendix B. “Debugging and Troubleshooting with MPLAB®

8” for MPLAB IDE Version 8 debug and programming guidance.

2.4.4 Setting Up an Application for Debug

To prepare the application for debug:

1. Launch MPLAB X, and then open the application project. The related workspace

will be open. For information on projects and workspaces, refer to the MPLAB X
documentation listed in the “Recommended Reading” section of the “Preface”
in this user’s guide.

2. In the toolbar, click Debug Project. The build progress will be visible in the Build

tab of the Output window.

3. Once the build sequence is complete, MPLAB X will program the target device

and begin executing the application code in Debug mode, as shown in

Figure 2-7.

 2012 Microchip Technology Inc. DS52074A-page 27

DS52074A-page 28  2012 Microchip Technology Inc.

FIGURE 2-7: MPLAB® X WORKSPACE

dsPICDEM™ MCHV-2 Development Board User’s Guide

Getting Started

2.4.4.1 RUNNING THE APPLICATION IN DEBUG MODE

The Starter Kit on Board executes the application code in either real-time (Continue) or
steps (Step Into, Step Over, Run to Cursor, and Set PC at Cursor). Real-time execution
occurs when you select Continue in MPLAB X. Once the device code is halted, either
by clicking Pause or by a breakpoint, you can step.

Note: When Pause is clicked to stop the program execution, all of the peripherals

are frozen.

To see how these options function, do the following:

1. Select Debug

2. Select Debug

operates.

3. Select Debug

solid arrow will mark the line of code in the File window where the program
halted.

4. Select Debug

once. The green solid arrow will move down one line of code in the File window.
Repeatedly click the button to step through the code.

5. Select Debug

6. Select Debug>Finish Debug Session

exit Debug mode.

>Reset or click the Reset icon to reset the program.
>Continue or click the Continue icon. Observe how the application

>Pause or click the Pause icon to stop program execution. A green

>Step Into or click the Step Into icon to step the program execution

>Reset click the Reset icon to reset the program again.

or click the Finish Debug Session icon to

 2012 Microchip Technology Inc. DS52074A-page 29

dsPICDEM™ MCHV-2 Development Board User’s Guide

Existing Code

2.4.4.2 DEBUGGING THE APPLICATION

MPLAB X provides an editor and several debug features such as breakpoints and
Watch windows to aid in application code debugging.

2.4.4.2.1 Editing Application Code

To view application code so it may be edited, do one of the following:

Select File>Open File
in the Project window to open an existing code file. See an example Project window in

Figure 2-8.

FIGURE 2-8: PROJECT EXAMPLE

to search for and open an existing code file, or double click a file

For more information on using MPLAB X to create and edit code, see the MPLAB X
Help.

2.4.5 Programming an Application

When the program is successfully debugged and running, the next step is to program
the device for stand-alone operation in the finished design. When doing this, the
resources reserved for debug are released for use by the application. To program the
application, use the following steps:

1. Select Debug>Finish Debug Session
exit Debug mode.

2. Select Run>Run Project
program the device, and release it from reset. Alternatively, click the Make and
Program Device icon to build the application and program the device (this action
does not release the device from reset).

At this point, the application code will run independently.

DS52074A-page 30  2012 Microchip Technology Inc.

or click the Run Project icon to build the application,

or click the Finish Debug Session icon to

Getting Started

2.4.6 Determining Device Support and Reserved Resources

Due to the built-in in-circuit debugging capability of ICD devices and the ICSP function
offered by the debugger, the Starter Kit on Board uses some on-chip resources when
debugging. It also uses program memory and file register locations in the target device
during debugging. These locations are not available for use by user code. In MPLAB
X, registers marked with an “R” in the register display represents reserved registers.

2.4.7 Troubleshooting

2.4.7.1 DEBUG CONNECTION PROBLEMS

While using the Starter Kit on Board as a debugger, you may receive the error “Starter
Kits (PKOB) not found” when programming the device. This can result from
communication being lost between the Starter Kit on Board and MPLAB X. To resolve
this:

1. Unplug the USB cable from the Starter Kit.

2. Plug the USB cable back into the Starter Kit.

MPLAB X should automatically reconnect to the Starter Kit on Board and display its
serial number (SN) in the same dialog box. Click the serial number followed by OK to
continue. If this does not work, do the following:

1. Check the USB connection between the PC and Starter Kit at both ends.

2. If using a USB hub, make sure it is powered.

3. Make sure the USB port is not in use by another device.

2.4.7.2 PROGRAMMING PROBLEMS

If during the course of developing your own application you can no longer program the
device, you may have set device configuration bits to code protect or some other state
that prevents programming. To view the settings of the configuration bits, select

Window>PIC Memory Views>Configuration b

its.

2.4.8 Starter Kit on Board Information Tab

The firmware version and operating system (OS) version of the Starter Kit on Board can
be obtained from the Project Dashboard window of MPLAB X. The project dashboard
window also displays other useful information such as Starter Kit on Board V
device ID, and target device ID revision.

DD, target

 2012 Microchip Technology Inc. DS52074A-page 31

dsPICDEM™ MCHV-2 Development Board User’s Guide

NOTES:

DS52074A-page 32  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

BOARD USER’S GUIDE

Chapter 3. Running the Demonstration

This chapter describes the demonstration software that is preloaded on the dsPIC®
device that is included with the dsPICDEM MCHV-2 Development Board. This demon­stration software, which is based on application note AN1162, demonstrates how to use
the dsPICDEM™ MCHV-2 Development Board for controlling an AC induction motor
(ACIM). For more information on this application note please refer to the following
Microchip web page: www.microchip.com/motor

Note: The demonstration code preloaded on the dsPIC device is the latest ver-

sion available at the time this board was packaged. There may be a newer
version of software available online. Visit www.microchip.com/motor to
download the latest version of software for the application note AN1162.

Follow these basic steps to run the demonstration:

Note 1: Before making any connection, verify that the system is not powered and

it is fully discharged. The system is completed discharged when the red
LED D13 is off.

2: One AC Induction Motor (part number: AC300023) is required to run this

demonstration.

1. Connect the system as described in 2.3.3 “Connection Sequence”. Ensure

that the Internal Op amp Configuration matrix board is connected to J4.

2. Power up the dsPICDEM™ MCHV-2 Development Board by connecting the

power cord to the mains. To verify that the unit is powered, make sure that the
LEDs D6, D13, D17, and D18 are ON. The very first time you connect the system
to any host PC, you should briefly see a popup balloon in the system tray (lower
right of desktop) that states: 1) new hardware has been found, 2) drivers are
being installed, and 3) new hardware is ready for use. If you do not see these
messages and the Starter Kit on Board does not work, try reconnecting the USB.
If this does not work, see Section 2.4.7 “Troubleshooting”.

Note: The unit is designed to be connected to the AC mains supply via a standard

non-locking plug. As the unit has no mains switch, this plug constitutes the
means of disconnection from the supply. Therefore, the user must have
unobstructed access to this plug during operation.

3. When powered up, the application will turn on the LEDs PWM1L1, PWM1L2 and

PWM1L3.

To use the demonstration application, follow these steps:

a) Make sure the PWM OUTPUT shunt jumper is installed.
b) To start/stop the motor, press the switch labeled “PUSHBUTTON”.
c) Use the potentiometer labeled “POT” to control the direction and speed of

the motor.

 2012 Microchip Technology Inc. DS52074A-page 33

dsPICDEM™ MCHV-2 Development Board User’s Guide

NOTES:

DS52074A-page 34  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

BOARD USER’S GUIDE

Chapter 4. Hardware

This chapter describes the hardware components of the dsPICDEM™ MCHV-2
Development Board.

Topics covered include:

• Power Factor Correction (PFC) Stage Board

• Power Module Stage

• Electrical Specifications

4.1 POWER FACTOR CORRECTION (PFC) STAGE BOARD

This board has two main functions; the first one is to provide the required power sup­plies to the power module board stage. The second function is to create the power bus
rail that will be used to energize the motor through the power module.

Note: The circuits for the hardware described in this section are shown in

Appendix A. “Board Layout and Schematics”.

4.1.1 AC Supply Input

The AC supply input stage of the board consists of the following components,:

• F1 –15A/250 VAC fast acting fuse (only replace with a part of the same rating)

• C1, C2 – Film capacitors to aid in the suppression of AC supply transients and to

also provide a low impedance return path for any currents that flows from the
power device tabs to the heat sink and enclosure due to capacitive coupling

• C3 – Film capacitor to aid in the suppression of AC supply transients.

• R1 – A metal oxide varistor located across the incoming supply lines to suppress

high energy transients.

• L1 – 2.3 mH/15A Choke inductor for suppressing EMI

• C4 – Film capacitor to aid in the suppression of EMI

• C5, C6 – Film capacitors to aid in the suppression of AC supply transients and to

also provide a low impedance return path for any currents that flow from the
power device tabs to the heat sink and enclosure due to capacitive coupling

• R7 – A 1W high-voltage resistor, which acts to discharge C4

• R6 – A resistor with a negative temperature coefficient that acts to limit the surge

of input current that would occur at initial application of power due to the dis­charged DC bus capacitance. The initial nominal cold resistance is 1 Ohm, which
reduces once current flows and the device heats up.

• BR1 – A single-phase bridge rectifier to convert the incoming AC into DC suitable

for input to the power conditioning stage.

 2012 Microchip Technology Inc. DS52074A-page 35

dsPICDEM™ MCHV-2 Development Board User’s Guide

4.1.2 Active Power Factor Correction (PFC)

The active PFC circuit is essentially a simple boost chopper with the control aimed at
shaping the input current to follow the incoming mains supply waveform. The purpose
of the different parts of the circuit is described below.

• L6 – A high frequency axial inductor with a single layer winding on a ferrite core.

This component is in series with the main inductor (L7) to reduce the effect of the
self-capacitance of its winding. Without L6, significant high frequency (15 MHz)
ringing of the inductor current occurs at every transistor turn-on, which would
increase EMI and the PFC transistor switching loss.

• L7 – A power inductor with three stacked toroidal cores made from a

powdered-iron material to limit the core loss while maintaining good energy
storage density. The particular cores used are Magnetics 0077083A7. A simple
multi-layer winding is used which results in moderate copper loss but significant
self-capacitance. Sixty-six turns of 1.5 mm diameter enameled copper wire is
used. The design offers a good compromise between cost, core loss and size for
this application. The nominal inductance is 1 mH at 10A.

• Q2 – A 600V TO-247 IGBT. As the tab of the device is not isolated, a thermally

conductive insulator is used. When closed, Q2 increase the energy stored in the
inductor L7. When open, energy stored in the inductance is transferred to the DC
bus capacitors (C30-C32). Energy is also drawn from the AC supply during this
time. By appropriate control of the switches, the input current waveform can be
profiled to obtain good power factor and low harmonic distortion.

• D12 – A 600V TO-247 diode optimized for use at high switching frequency. As the

tab of the device is not isolated, a thermally conductive insulator is used.

• C28, R31, R32, R33, D11 – A “snubber” that acts to damp high frequency

oscillations and limit the rate of change of voltage across Q2

• C30, C31, C32 – 470 µF/450V electrolytic capacitors which act as the main DC

bus energy storage capacitors.

• R25, R26, C25, D8, Q1, R27, R28 – A lever shifter to boost the PWM signal coming

from the dsPIC DSC

• U19 – Microchip TC4421A gate drive IC. This contains a low resistance comple-

mentary push-pull MOSFET pair and input circuitry suitable for interfacing to a
wide range of input voltages. It is an ideal choice for this application allowing up to
10A of peak gate drive current to switch Q2 rapidly and therefore achieve low
switching loss. It also has a small footprint allowing it to be located physically
close to the transistors allowing a low inductance gate circuit layout.

• D9, C26, C27 – These components act to provide a dynamic level shifting circuit

to U19 while Q2 switch. Inductance of the power tracking between the source of
Q2 due to the physical board layout means there is a substantial transient voltage
between the +15V supply point reference at R28 and the source of Q2. This
simple low cost circuit allows the power supply of U19 to move transiently.

• R75, R29 and D10 – These components control the current and voltage to turn on

and turn off the IGBT. R29 controls the rising time and the di/dt when the IGBT is
turned on. R29 in parallel with R75 control the falling time and the di/dt when the
IGBT is turned off.

• The power factor corrector design is based on the application note AN1106, for

more information on this application note please refer to one of the following
Microchip Web sites:

- www.microchip.com/smps

- www.microchip.com/motor

DS52074A-page 36  2012 Microchip Technology Inc.

Hardware

4.1.3 PFC Feedback Circuitry

In a DSC-based PFC, the relevant analog parameters and the control loops need to be
redefined and discretized. This enables changeover from existing hardware to its digital
counterpart easier and more logical.

The PFC is an AC-to-DC converter, which converts the AC input voltage to a DC volt­age and maintains sinusoidal input current at a high input power factor. In a DSC-based
PFC, three inputs signals are required to implement the current control.

The input rectifier (BR1) converts (shown in Section 4.1.1 “AC Supply Input ”) the
alternating voltage at power frequency into unidirectional voltage. This rectified voltage
is fed to the chopper circuit to produce a smooth and constant DC output voltage to the
load. The chopper circuit is controlled by the PWM switching pulses generated by the
dsPIC DSC device, based on three measured feedback signals:

• Rectified input voltage

• AC input voltage zero-crossing event

• Rectified input current

• DC bus voltage

The rectified input voltage is measured in two stages:

• Signal conditioning: R22, R23, R24, C24, and D7 convert and filter the AC input

voltage waveform from 90-265 VAC to 0-3.3 VAC. D7 limit the maximum voltage
to 3.3V. C24 along with R22, R23 form a low-pass filter. The circuit is shown in
Appendix A.

• Amplification: the operational amplifier MCP6024 (U13B) amplifies the condi-

tioned AC input voltage; R45, R46, R47, R48, R49 and R51 set the gain. The
MC6024 also shifts the conditioned AC input voltage to a 1.65V DC level. There­fore, the voltage applied to the dsPIC DSC ADC channel varies within 0-3.3V. The
offset is controlled by R50, R53, and R54. R39 and C39 filter out the
high-frequency noise.

AC input voltage zero-crossing event is sensed using a voltage divider (R2-R5) and two
opto-couplers (U1 and U2). The circuit is shown in Appendix A.

Rectified input current is measured using the shunt resistor R34 and the operational
amplifier MCP6024 (U13A); R38, R39, R40, R41, R42 and R43 set the gain. R43 shifts
the voltage present at the shunt resistor to a 1.65V DC level. Therefore, the voltage
applied to the dsPIC DSC ADC channel varies within 0-3.3V. The offset is controlled by
R43, R53, and R54. R44 and C37 filter out the high-frequency noise. The circuit is
shown in Appendix A.

DC bus voltage, the DC bus voltage is sensed at the power module stage. Please refer
to Section 4.2.4 “Feedback Circuitry”.

4.1.4 Power Supplies

The PFC stage board provides the 15 volts power supply required to fire the power
module IGBTs. The 15 volts power supply is built using a low power off-line SMPS pri­mary switcher. The switching frequency is fixed to 60 kHz, the feedback signal to the
power supply is provided by the opto-coupler. The output voltage is regulated at 15V
with a maximum output current of 0.750A, the resultant maximum power is 11.25W.
The input voltage range for this power supply is from 90 VAC to 260 VAC.

The PFC stage board also provides the 3.3 volts to powering-up the PIC24 MCU or
dsPIC DSC, the isolation circuitry, the communication ports, the Starter Kit program­mer, etc. It also generates the 3.3 volts for powering the analog circuits and the analog
reference for the Analog-To-Digital Converter (ADC) module.

 2012 Microchip Technology Inc. DS52074A-page 37

dsPICDEM™ MCHV-2 Development Board User’s Guide

The 3.3 volts rail is created using a step-down regulator which is attached to the 15
volts regulator. The maximum output current is 0.650A, thus the resultant maximum
power is 2.145W.

The 3.3 volts rail required for the analog circuits such as the current feedback and the
Analog-to-digital converter is generated by a decoupling circuitry attached to the 3.3 volts
regulator.

4.1.5 Fault Circuitry

Given the development nature of the system, robust independent FAULT protection is
provided on the PFC Stage Board. Two different fault categories are used to indicate a
FAULT to the PIC24 MCU or dsPIC DSC.

DC Bus Overcurrent, this fault signal is generated when the maximum current limit of
15A is reached. The comparison of the threshold value and the actual current is done
by comparator U8. The threshold limit is set by R56 and R57. R69 is a shunt jumper
resistor that can disconnect the overcurrent fault to the PIC24 MCU or dsPIC DSC.

DC Bus Overvoltage, this fault signal is generated when the maximum voltage limit on
the DC bus rails is reached. The threshold value is set to 432V. The comparison of the
threshold value and the actual DC bus voltage is done by comparator U7. The thresh­old limit is set by R60, R61 and R62. R66 is a shunt jumper resistor that can disconnect
the overvoltage fault to the PIC24 MCU or dsPIC DSC.

Note: Both comparators are of open-drain type and need an external pull-up

resistor. Both circuits share this pull-up resistor creating an OR condition at
the output.

4.1.6 Board Connectors

The PFC stage board has four tab fast-on connectors, one AC inlet and one 14-pin
keyed connector for attaching a flat cable.

For the AC mains supply input, standard double-insulated, 3-core flex cable should be
used with a minimum current rating of 10A (1 mm
can be used. The recommended cable size is 1.0 to 1.5 mm
have a 600V rating. This cable should also be double insulated or have a protective
ground screen.

Note 1: The system is designed for installation category II. Therefore, the

incoming mains cable should be wired into a standard non-locking 2-pin
in addition with an earth ground type plug.

2: The unit is designed to be connected to the AC mains supply via a

standard non-locking plug. As the unit has no mains switch, this plug
constitutes the means of disconnection from the supply. Therefore, the
user must have unobstructed access to this plug during operation.

The tab fast-on connectors AC_N and AC_L provides the connections to the bridge
rectifier BR1. The recommended cable size is 16-18 AWG or 1.0 to 1.5 mm
recommended that cables used for the power connections should be terminated with
blue or red crimp terminals. If crimp terminals are not used, care should be taken to
ensure that stray strands of wire do not short to adjacent terminals or the enclosure. If
possible, all wires should be stripped and tinned with solder before connecting to the
dsPICDEM MCHV-2 Development Board terminals.

2

18 AWG). A computer power cable

2

(18-16 AWG) and it should

2

. It is also

DS52074A-page 38  2012 Microchip Technology Inc.

Hardware

The fast-on connectors PFC_OUT “+” and PFC_OUT “-” provide DC bus voltage to the
Power Module Stage. The recommended cable size is 16-18 AWG or 1.0 to 1.5 mm

2

. It
is also recommended that cables used for the power connections should be terminated
with blue or red crimp terminals. If crimp terminals are not used, care should be taken to
ensure that stray strands of wire do not short to adjacent terminals or the enclosure. If
possible, all wires should be stripped and tinned with solder before connecting to the
dsPICDEM MCHV-2 Development Board terminals.

Note: The user should only access the power terminals when the system is fully

discharged (see the “Safety Notice” on page 5).

The 14-pin keyed connector provides the signals and power supply rails from and to
the Power Stage. These signals are shown in Tab le 4 -1 .

TABLE 4-1: 14-PIN KEYED CONNECTORS

Number Name Type

1 3.3V, digital rail Output
2 Not Connected NC
3 3.3V, analog rail Output
4 AC input voltage feedback Output
5 Ground, analog rail Output
6 AC input current feedback Output
7 Fault (Overcurrent OR Overvoltage condition) Output
8 VAC zero crossing signal Output

9 Ground, digital rail Output
10 PWM signal for the PFC IGBT Input
11 Ground, digital rail Output
12 Not Connected NC
13 15V Output
14 Not Connected NC

 2012 Microchip Technology Inc. DS52074A-page 39

dsPICDEM™ MCHV-2 Development Board User’s Guide

4.2 POWER MODULE STAGE

This board has two main functions; the first is to control the motor using a PIC24 MCU
or dsPIC DSC and a Power Module and the associated feedback signals for each
control algorithm. The second is to provide a safe method in which to interact with the
user.

Note: The circuits for the hardware described in this section are shown in

Appendix A. “Board Layout and Schematics”.

4.2.1 Plug-In Module Configuration

Ta bl e 4 - 2 summarizes the pinout functionality of the PIM (U11).

TABLE 4-2: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD PIM PINOUT

FUNCTIONALITY

Routed

PIM

Pin #

1 DBG_LED1 Debug LED 1 No
2V
3 PWM1H3 PWM Output - 3H No
4N/A N/A No
5N/A N/A No
6N/A N/A No
7N/A N/A No
8N/A N/A No

9N/A N/A No
10 N/A N/A No
11 N/A N/A No
12 N/A N/A No

13 MCLR
14 N/A N/A No
15 V
16 V
17 N/A N/A No
18 FAULT IBUS Current Fault (active-low logic) No
19 PFC_FLT IPFC fault (overvoltage or overcurrent) No
20 PIM_INDX/POT/V_M3 Hall sensor/Current sense/Voltage feedback signal Yes
21 PIM_QEB/IB/V_M2 Hall sensor/Current sens /Voltage feedback signal Yes
22 PIM_QEA/IA/V_M1 Hall sensor/Current sense/Voltage feedback signal Yes
23 PIM_IBUS/V
24 PIM_IB/POT AC input zero-cross/AC input voltage (downscaled)/Potentiometer Yes
25 PIM_IA/IPFC PFC current (buffered) Yes
26 PGC Device programming clock line No
27 PGD Device programming data line No
28 AV
29 PIM_REC_NEUTR Reconstructed motor neutral line voltage Yes
30 AV
31 AV
32 PIM_POT Potentiometer signal Yes
33 PIM_POT Potentiometer signal Yes

Signal Name Pin Out Description

DD N/A No

Device Master Clear No

SS N/A No
DD N/A No

BUS DC bus voltage (downscaled) Yes

DD/2 Reference voltage (half of AVDD voltage) No

DD Analog supply No
SS Analog supply No

via
Matrix
Board

DS52074A-page 40  2012 Microchip Technology Inc.

Hardware

TABLE 4-2: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD PIM PINOUT

FUNCTIONALITY (CONTINUED)

PIM

Pin #

34 PIM_GEN2 General I/O Yes
35 PIM_DC_BUS DC bus voltage (downscaled) Yes
36 V
37 V
38 PIM_VAC_VOL2 AC input voltage (unbuffered) Yes
39 PIM_IPFC_C_SHUNT PFC shunt signal Yes
40 PIM_PFC_L PFC shunt signal Yes
41 PIM_V_M1/POT Hall sensor / Current sense / Voltage feedback signal Yes
42 PIM_V_M2 Hall sensor / Current sense / Voltage feedback signal Yes
43 PIM_V_M3/IBUS Hall sensor / Current sense / Voltage feedback signal Yes
44 N/A N/A No
45 V
46 V
47 HB/QEB Hall sensor / QEI input No
48 HC/INDX Hall sensor / QEI input No
49 RX UART Receive No
50 TX UART Transmit No
51 N/A N/A No
52 N/A N/A No
53 N/A N/A No
54 N/A N/A No
55 N/A N/A No
56 N/A N/A No
57 N/A N/A No
58 PIM_FLT_OUT2 General I/O Yes
59 PIM_FLT_OUT1 General I/O Yes
60 DBG_LED2 Debug LED #2 No
61 HOME Home signal for QEI (test point only) No
62 VDD N/A No
63 OSCI Crystal oscillator in No
64 OSCO Crystal oscillator out No
65 V
66 PIM_IBUS+ IBUS shunt signal Yes
67 PIM_IBUS- IBUS shunt signal Yes
68 BTN Push Button No
69 N/A N/A No
70 RX UART Receive No
71 PIM_PFC_PWM PFC PWM output Yes
72 HA/QEA Hall sensor / QEI input No
73 PIM_IB+ IB shunt signal Yes
74 PIM_IA+ IA shunt signal Yes
75 V
76 HB/QEB Hall sensor / QEI input No
77 PIM_HALLC/INDX/STP_PWM Hall sensor / QEI input Yes
78 PIM_PFC_PWM PFC PWM output Yes

Signal Name Pin Out Description

SS N/A No
DD N/A No

SS N/A No
SS N/A No

SS N/A No

SS N/A No

Routed

via
Matrix
Board

 2012 Microchip Technology Inc. DS52074A-page 41

dsPICDEM™ MCHV-2 Development Board User’s Guide

TABLE 4-2: dsPICDEM™ MCHV-2 DEVELOPMENT BOARD PIM PINOUT

FUNCTIONALITY (CONTINUED)

Routed

PIM

Pin #

79 VACZX AC input zero-cross No
80 HA/QEA Hall sensor/QEI input No
81 N/A N/A No
82 PIM_GEN1 General I/O Yes
83 N/A N/A No
84 TX UART Transmit No
85 N/A N/A No
86 V
87 N/A N/A No
88 N/A N/A No
89 N/A N/A No
90 N/A N/A No
91 N/A N/A No
92 N/A N/A No
93 PWM1L1 PWM Output - 1L No
94 PWM1H1 PWM Output - 1H No
95 N/A N/A No
96 N/A N/A No
97 N/A N/A No
98 PWM1L2 PWM Output - 2L No
99 PWM1H2 PWM Output - 2H No

100 PWM1L3 PWM Output - 3L No

Signal Name Pin Out Description

DD N/A No

via
Matrix
Board

4.2.2 Power Supplies

The system default configuration is to get the 15V, 3.3V and 3.3V analog rail voltages
from the PFC stage board. However, it is also possible to use an external 24V power
supply to generate these voltages.

U19, C70, C73, C71 and C74 regulate the voltage applied to the system via J15 (28V
max). The output of the regulator is connected to the system through R109. The circuit
is shown in Appendix A. “Board Layout and Schematics”.

Note: It is the responsibility of the user to populate these components if an

external power supply is used.

U18, C67, R110, C68, D16, D15, L3, R111, R112 and C75 regulate the 15 volts to cre­ate a 3.3V digital rail. This auxiliary 3.3V digital rail is applied to the system through
R106. The circuit is shown in Appendix A. “Board Layout and Schematics”.

Note: It is the responsibility of the user to populate these components if an

external power supply is used.

DS52074A-page 42  2012 Microchip Technology Inc.

Hardware

R114, R107, C69, and C72 form a decoupling circuit for generating a 3.3V rail for the
analog circuitry such as the ADC reference and the current feedback reference. This
auxiliary 3.3V analog rail is applied to the system through R108.

Note: It is the responsibility of the user to populate these components if an

external power supply is used.

4.2.3 Power Module

The three-phase inverter is embedded in a power module (U16). This power module
contains:

• 600V/30A 3-phase IGBT Inverter Bridge

• Gate driver circuitry for each IGBT

• Three Independent connections to the negative DC bus for current sensing

• Short-circuit protection circuitry

• Thermal Shutdown

• Gate Driver Power Supply Undervoltage protection

• Gate Driver Power Supply Overvoltage protection

• Single-grounded power supply

• Isolation of 2.5 kV per minute

• Maximum switching frequency: 20 kHz

The PIC24 MCU or dsPIC DSC provides the PWM signals to this power module in
order to turn on/off the IGBT, and therefore apply power to the motor phases.

R95 and R124 set the threshold limit for the overcurrent circuitry. If this voltage is
greater than 0.5V (typical), a fault signal is asserted and the low-side IGTBs are turned
off. R94 and C53 form a low-pass RC filter that filters out the frequencies above

88.4 kHz.

C56 sets the fault pulse duration, the value of C56 is given by the following equation:
C56 = 18.3E-6 x 1.8E-3 seconds. Therefore, the fault pulse duration is 54 µs.

The power module fault output pin (VFO) is open-collector configured. R50 pulls up the
fault output to the analog 3.3V rail. R53 and C40 form a low-pass RC filter that filters
out the frequencies above 53 kHz.

For more information about this power module please refer to the manufacturer’s data
sheet.

4.2.4 Feedback Circuitry

The Power Module Stage provides three different methods to sense the motor position.
These signals are also useful to determine the speed, the torque, current consumption
and the applied voltage.

Hall Sensors, the hall sensors circuitry is designed to attach open-collector configured
sensors. It has a pull-up resistor at the hall sensor inputs (R23, R24, and R25) and a
voltage divider (R26-R29, R27-R30, R28-R31) in order to scale the input waveforms to
the PIC24 MCU or dsPIC DSC logic levels. C25-C27 and R26-R28 form a low-pass RC
filter for each hall sensor signal.

Phase Voltage Feedback circuitry for each phase is compounded by a voltage divider,
a current limiter and a low-pass RC filter. R79, R84 and R92 scale the phase M1 volt­age in order to match the PIC24 MCU or dsPIC DSC logic levels. R85 limits the current
going to the ADC pin (< 6mA). C51, R79 and R84 form the low-pass filter. The phase
M2 and M3 has the exact same circuitry as shown in the schematic.

 2012 Microchip Technology Inc. DS52074A-page 43

dsPICDEM™ MCHV-2 Development Board User’s Guide

Shunt resistor signals (Direct)

Reconstructed motor neutral voltage

Feedback signals

(Hall sensor/Phase voltage/Shunt resistor)

DC bus voltage

Potentiometer

Matrix
Board

Plug-In Module

DC Bus Voltage Feedback is compounded by a voltage divider and a low-pass RC
filter. R75, R76 and R81 scale the DC bus voltage in order to match the PIC24 MCU or
dsPIC DSC logic levels. C47, R75 and R76 form the low-pass filter.

Inverter Leg Shunt Resistor Feedback, a shunt resistor is located between the emit­ter of the low side switches M1 and M2 and the “-DC bus”. A simple differential amplifier
circuit is used as shown in Appendix A. “Board Layout and Schematics”. The
operation of the circuit used for the M1 phase leg is described below:

The current is measured using the shunt resistor R86 and the operational amplifier
MCP6024 (U13A); R32, R33, R34, R36, and R37 set the gain. R38 shifts the voltage
present at the shunt resistor to a 1.65V DC level. Hence the voltage applied to the
PIC24 MCU or dsPIC DSC ADC channel varies within 0-3.3V. The offset is controlled
by R59, R60, R38 and U13D. R35 and C34 filter out the high-frequency noise.

The same topology is used for the phase M2.

DC Bus Current Feedback, a shunt resistor is located between the shunt resistors of
side switches M1 and M2 and the “-DC bus”. A simple differential amplifier circuit is
used as shown in the schematic. The operation of the circuit used for sensing the DC
bus current is described as follows:

The current is sensed using the shunt resistor R95 and the operational amplifier
MCP6024 (U13C); R49, R51, R52, R56, and R57 set the gain. R58 shifts the
voltage present at the shunt resistor to a 1.65V DC level. Hence the voltage
applied to the PIC24 MCU or dsPIC DSC ADC channel varies within 0-3.3V. The
offset is controlled by R59, R60, R58 and U13D. R54 and C42 filter out the
high-frequency noise.

Note: It is possible to select any of these feedback signals using jumpers J12, J13

and J14, please refer to Section 4.2.9 “User Interfaces” for more
information.

4.2.5 Matrix Board

The functions of matrix board interface are to:

• Connect the appropriate signals to the correct pins on the Plug-In Module

• Disconnect signals and provide isolation on signal paths that are not being used in
a particular hardware configuration

The matrix board header has two rows of pins. One row (pin 1 to pin 25) hosts signals
from different signal sources while the other (pin 26 to pin 50) hosts connections to the
Plug-In Module. A block diagram describing the matrix board interface is shown in

Figure 4-1.

FIGURE 4-1: MATRIX BOARD BLOCK DIAGRAM

DS52074A-page 44  2012 Microchip Technology Inc.

Hardware

The dsPICDEM MCHV-2 Development Board uses discrete op amps (U13) to amplify
the shunt resistor signals. Alternatively, some of the PIC24 MCUs or dsPIC DSCs
include on-board op amps that can be used for this purpose. To accommodate these
two basic configurations, the dsPICDEM MCHV-2 Development Board comes with two
matrix boards.

The Internal Op amp Configuration matrix board is used to configure the development
board to use op amps internal to the PIC24 MCU or dsPIC DSC. This matrix board
bypasses the current feedback circuitry on the Power Module Board and directly connects
the shunt resistor signals to appropriate pins of the Plug-In Module.

The External Op amp Configuration matrix board is used to configure the development
board to use the current feedback circuitry on the Power Module Board. This matrix board
disconnects the shunt resistor signals from the Plug-In Module pins and connects the current
feedback circuitry output to the appropriate Plug-In Module pins.

Note: Unless specified in the Plug-In Module information sheet, all PIMs are com-

patible only with the External Op amp Configuration matrix board. Certain
Plug-In Modules are designed to work with the Internal Op amp Configura­tion matrix boards only. In this case, the corresponding PIM information
sheet (available at www.microchip.com/pims) will explicitly state this.

4.2.6 Fault Circuitry

In addition to the fault signal generated by the power module, the system can also
create a DC bus overcurrent fault.

DC Bus Overcurrent, this fault signal is generated when the maximum current limit of
15A is reached. The comparison of the threshold value and the actual current is done
by comparator U14. The threshold limit is set by R42 and R47.

Note: The comparator is open-drained and needs an external pull-up resistor.

Both the power module output and the comparator output share this pull-up
resistor creating an OR condition at the output.

4.2.7 Isolation

The power supply used by the push buttons, communication ports, and the Starter Kit
on Board programmer/debugger is isolated from the power supply used by the power
module or the PIC24 MCU or dsPIC DSC. An isolated 3.3V rail is generated from the
digital 3.3V rail using a DC-to-DC converter (U10). This converter provides galvanic
isolation rated up to 1000 V

DC/1 second.

4.2.8 Communication Ports

The power module stage board provides two methods for transmitting/receiving data to
and from the system. Both communication methods are powered using the isolated

3.3V rail.

UART-to-USB communication port is based on a PIC18LFJ2450 device with a serial
emulator firmware. This device translates the USB signals to PIC24 MCU or dsPIC
DSC UART compatible signals. Isolation for the UART-to-USB communication port is
provided by U25.

UART-to-RS-232 communication port is based on a RS-232 transceiver (U9). This
device translates the PIC24 MCU or dsPIC DSC UART signals to UART compatible
signals. Isolation for the UART-to-RS-232 communication port is provided by U25.

Shunt jumpers J2 and J3 select the communication port. Tab le 4- 3 shows the possible
configurations.

 2012 Microchip Technology Inc. DS52074A-page 45

dsPICDEM™ MCHV-2 Development Board User’s Guide

TABLE 4-3: COMMUNICATION PORT CONFIGURATION

Designator Position Description

J2 1-2 Connects UART receive line to RX.

2-3 Connects USB receive line to RX.

J3 1-2 Connects UART transmit line to TX.

2-3 Connects USB transmit line to TX.

4.2.9 User Interfaces

There are two types of user interfaces, isolated and non-isolated:

• Isolated interfaces:

- Potentiometer labeled “POT” (R14)

- RESET push button

- PUSH BUTTON (S1)

- PWM OUTPUT enable shunt jumper (J7)

- Communication Port Selection shunt jumper (J2 and J3)

- ICSP programmer/debugger connector for the Starter Kit on Board (J4)

- ICSP programmer/debugger connector for the UART-to-USB converter (J1)

• Non-Isolated interfaces:

- 15V Power Supply LED (D17)

- 3.3V Power Supply LED (D18)

- PWM2L1, PWM1L1, PWM1H1, PWM1L2, PWM1H2, PWM1L3, PWM1H3

LEDs

- USB communication LED (D1)

- USB cable connected LED (D3)

- Starter Kit on Board USB cable connected LED (D21)

- Starter Kit on Board Power On LED (D19)

- ICSP programmer/debugger connector for the PIC24 MCU or dsPIC DSC (J18)

- Feedback Selection Shunt Jumpers J11, J12, J13, and J14

- Debug LEDs (D2 and D19)

Ta bl e 4 - 4 shows the multiple feedback signals that can be selected.

TABLE 4-4: MULTIPLE FEEDBACK SIGNALS

Designator Position Description

J11 1-2 Connects AC input voltage zero-crossing event to

VAC ZX_VAC_ POT
3-4 Connects AC input voltage to VACZX_VAC_POT
5-6 Connects the POT voltage to VACZX_VAC_POT

J12 1-2 Connects Phase M1 shunt current feedback to MONITOR_1

3-4 Connects Phase M1 voltage feedback to MONITOR_1
5-6 Connects Hall A/QEA sensor signal to MONITOR_1

J13 1-2 Connects Phase M2 shunt current feedback to MONITOR_2

3-4 Connects Phase M2 voltage feedback to MONITOR_2
5-6 Connects Hall B/QEB sensor signal to MONITOR_2

J14 1-2 Connects DC bus shunt current feedback to MONITOR_3

3-4 Connects Phase M3 voltage feedback to MONITOR_3
5-6 Connects Hall C/INDEX sensor signal to MONITOR_3
7-8 Connects the POT voltage to MONITOR_3

DS52074A-page 46  2012 Microchip Technology Inc.

4.2.10 Hardware for Programming and Debugging

6

7

8

9

10

3

2

1

4

5

14

13

11

12

15

16

17

The dsPICDEM™ MCHV-2 Development Board, with its built-in Starter Kit on Board
debugger/programmer, provides an all-in-one solution for debugging and programming
applications using MPLAB IDE. The debugging/programming operations are controlled
by a PIC24FJ256GB106 MCU. The PIC24FJ256GB106’s built-in USB engine provides
the communications interface between the Starter Kit on Board and the host PC.

Power to the Starter Kit on Board is provided via the isolated 3.3V rail. The
PIC24FJ256GB106 MCU accomplishes debugging or programming of the target
PIC24 MCU or dsPIC DSC by controlling the target’s MCLR
PGD1/EMUD1 signals. A Microchip 25LC256 serial EEPROM is used to store the
serial number and debug control information. Isolation for the MCLR
and PGD1/EMUD1 signals is provided by the digital isolators U3, U6, U22 and U7.

4.2.11 Board Connectors

Figure 4-2 provides the locations of the connectors. The Power Module Stage Board

connectors are listed in Table 4-4.

FIGURE 4-2: POWER MODULE BOARD CONNECTORS

Hardware

, PGC1/EMUC1, and

, PGC1/EMUC1,

 2012 Microchip Technology Inc. DS52074A-page 47

dsPICDEM™ MCHV-2 Development Board User’s Guide

TABLE 4-5: POWER MODULE STAGE BOARD CONNECTORS

Number Designator Type

1 Motor Phase 1 (M1) Output/Power

2 Motor Phase 2 (M2) Output/Power

3 Motor Phase 3 (M3) Output/Power

4 DC Bus “+” Input/Power

5 DC Bus “-” Input/Power

6 Hall Sensor A (HA) Input

7 Hall Sensor B (HB) Input

8 Hall Sensor C (HC) Input

9 Hall Sensors, 5V power supply terminal Output/Power

10 Hall Sensors, Ground terminal Output/Power

11 UART-to-USB connector Input/Output

12 UART-to-RS-232 connector Input/Output

13 USB connector for the Starter Kit Programmer/Debugger Input/Output

14 Connector for matrix board (J4) Input/Output

15 Isolated ICSP™ programmer/debugger connector for

UART-to-USB converter (J1)

16 ICSP programmer/debugger connector for PIC24 MCU or

dsPIC DSC (J18)

17 14-pin keyed connector (J16) Input/Output/Power

Input/Output

Input/Output

The 14-pin keyed connector provides the signals and power supply rails from and to
the Power Module Stage. These signals are shown in Tab le 4 -6 .

TABLE 4-6: 14-PIN KEYED CONNECTORS

Number Name Type

1 3.3V, digital rail Output

2 AC input voltage feedback (not buffered) Output

3 3.3V, analog rail Output

4 AC input voltage feedback (buffered) Output

5 Ground, analog rail Output

6 AC input current feedback Output

7 Fault (Overcurrent or Overvoltage condition) Output

8 VAC zero crossing signal Output

9 PFC shunt signal Output

10 PWM signal for the PFC IGBT Input

11 Ground, digital rail Output

12 PWM fault Output

13 15V Output

14 PFC shunt signal Output

DS52074A-page 48  2012 Microchip Technology Inc.

4.3 ELECTRICAL SPECIFICATIONS

The maximum power and current capability of the system is dictated by the allowable
temperature rise of the different components. Establishing maximum limits is not simple
given the different ways the user may use the system. The voltage and the nature of
the electrical load used both affects the dissipation that occurs. In determining the
allowable limits for the power semiconductors, the following assumptions have been
made:

• Heat sink is at 70°C (worst case)

• Thermal resistance of the insulating thermal pad is 3°C/W

TABLE 4-7: INVERTER ELECTRICAL SPECIFICATIONS

Parameter Min Typ Max Units

DC Bus 40 310 400 V

Current 0.1 6.5

Power Rating 4 2015

Switching Frequency 0 — 20 kHz

Note 1: The system continuously operated during one hour, 15 kHz switching

frequency and the PFC boost circuit disabled.

2: It is possible to increase the available maximum output power up to

4000W by using an external ventilation mechanism attached to system
near to the power module. To provide additional air flow, a conventional
AC muffin fan can be used (Comair-rotron part number 028021 or

028023). An alternative bonded fin heat sink with fans attached is also an
option (C&H Technology, Inc. part number CH5117F).

(1)

(2)

10

4000

Hardware

(1)

(2)

DC

A

Watts

TABLE 4-8: PFC ELECTRICAL SPECIFICATIONS

Parameter Min Typ Max Units

DC Bus 90 380 400 VDC

Current 0.1 2.6

Power Rating 9 1000

Switching Frequency 0 50 100 kHz

(1)

(2)

3.5

1400

(1)

(2)

Watts

Note 1: The system continuously operated during one hour, 50 kHz switching

frequency.

2: It is possible to increase the available maximum output power up to

1400W by using an external ventilation mechanism attached to system
near to the PFC IGBT. To provide additional air flow, a conventional AC
muffin fan can be used (Comair-rotron part number 028021 or 028023).
An alternative bonded fin heat sink with fans attached is also an option
(C&H Technology, Inc. part number CH5117F).

A

 2012 Microchip Technology Inc. DS52074A-page 49

dsPICDEM™ MCHV-2 Development Board User’s Guide

NOTES:

DS52074A-page 50  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

Appendix A. Board Layout and Schematics

FIGURE A-1: PFC STAGE BOARD LAYOUT (TOP)

BOARD USER’S GUIDE

 2012 Microchip Technology Inc. DS52074A-page 51

dsPICDEM™ MCHV-2 Development Board User’s Guide

1

2

3

4

1

4

2

3

5

6

312

4

1

2

3

4

1

4

2

3

1

2

3

4

FIGURE A-2: PFC STAGE SCHEMATIC (SHEET 1 OF 3)

DS52074A-page 52  2012 Microchip Technology Inc.

FIGURE A-3: PFC STAGE SCHEMATIC (SHEET 2 OF 3)

Appendix A

 2012 Microchip Technology Inc. DS52074A-page 53

dsPICDEM™ MCHV-2 Development Board User’s Guide

FIGURE A-4: PFC STAGE SCHEMATIC (SHEET 3 OF 3)

DS52074A-page 54  2012 Microchip Technology Inc.

FIGURE A-5: POWER MODULE STAGE BOARD LAYOUT (TOP)




Appendix A

 2012 Microchip Technology Inc. DS52074A-page 55

dsPICDEM™ MCHV-2 Development Board User’s Guide

FIGURE A-6: POWER MODULE STAGE BOARD LAYOUT (BOTTOM)

DS52074A-page 56  2012 Microchip Technology Inc.

M

IB

IA

AVDD/2 PWM1L2

PIM_POT

PIM_GEN2

PIM_PFC_L

HA/QEA

RX PIM_HALLC/INDX/STP_PWM

PIM_V_M3/IBUS

V_M2

VBUS

MONITOR_1

IPFC_C_SHUNT

IA_SHUNT+

GND_DIG

DBG_LED1

TX

GND_DIG

GND_DIG

GND_DIG

OSCI

IPFC

VBUS

OSCO

V_M3

HC/INDX

PWM2L1

POT

REC_NEUTR

PFC_L

MONITOR_2

IB_SHUNT+

IBUS_SHUNT+

IBUS_SHUNT-

GND_DIG

4

2

3

1

1086

12

1413

11

975

PGC

PGD

PWM1L3

PWM1H2

PWM1H1

PWM1L1

+3.3V_DIG

PIM_V_M2

+3.3V_DIG

7 98
6

HB/QEB

HC/INDX

VACZX

PIM_GEN1

PIM_PFC_PWM

TX HB/QEB

GND_DIG

FAULT_IP/IBUS

1

2

354

GND_DIG

V_M1

FAULT_IP/IBUS

MONITOR_3

VAC_VOL2

GND_DIG

GND_DIG

PIM_REC_NEUTR

PIM_DC_BUS

PIM_VAC_VOL2

PIM_V_M1/POT

PIM_IPFC_C_SHUNT

FAULT

PIM_IBUS/VBUS

PIM_INDX/POT/V_M3

IPFC ISO_D+

PIM_FLT_OUT1

BTN

PIM_PFC_PWM

PIM_IA+

PIM_GEN1

PIM_IB/POT

PIM_DC_BUS

PIM_IA+

PFC_FLT

PFC_PWM

VACZX

15V_PFC

PFC_L

AVDD_PFC VAC

VDD_PFC VAC_VOL2

PIM_IA/IPFC

PIM_IB/POT

PFC_FLT

PIM_QEB/IB/V_M2

PIM_QEA/IA/V_M1

FAULT

MCLR

+3.3V_DIG

GND_DIG

PWM1H3

+3.3V_DIG

ISO_D-

ISO_VDD_USB

GND_DIG

+3.3V_DIG

PIM_FLT_OUT2

OSCI

HOME

DBG_LED2

OSCO

PIM_IBUS-

PIM_IBUS+

RX

HA/QEA

PIM_IB+

PIM_GEN2

PIM_IA/IPFC

PIM_POT

PIM_V_M2

PIM_PFC_L

PIM_IBUS-

PIM_IB+

PIM_IBUS+

HC/INDX

HB/QEB

HA/QEA

+3.3V_DIG

GND_DIG

23

20

17

14

11

8

5

2

28

31

34

37

40

43

46

49

24

25

181921

22

121315

16

679

10

134

26

27

29

30

32

33

35

36

38

39

41

42

44

45

47

48

50

J4

PIM_QEB/IB/V_M2

PIM_FLT_OUT2

VACZX_VAC_POT

PIM_V_M1/POT

PIM_IPFC_C_SHUNT

IPFC_C_SHUNT

PIM_INDX/POT/V_M3

+3.3V_ANA

PIM_HALLC/INDX/STP_PWM

PIM_PFC_PWM

+3.3V_ANA

PIM_IBUS/VBUS

PIM_REC_NEUTR

PIM_QEA/IA/V_M1

PIM_FLT_OUT1

PIM_V_M3/IBUS

PIM_VAC_VOL2

FIGURE A-7: POWER MODULE STAGE SCHEMATIC (SHEET 1 OF 6)

Appendix A

 2012 Microchip Technology Inc. DS52074A-page 57

dsPICDEM™ MCHV-2 Development Board User’s Guide

M

P

VFO

15V

M3_L

M1_H

VCC(UH)

VS(M2)

VCC(VH)

VS(M3)

VCC(WH)

IB_SHUNT+

15V_PFC

V_M3

V_M1

M2

VDD_PFC

VBUS

GND_DIG

M1_L

M2_L

VS(M1)

VB(U)

VB(V)

M2_H

VB(W)

M3_H

GND_DIG

GND_DIG

15V

IBUS_SHUNT-

GND_DIG

IBUS_SHUNT+

GND_DIG

N

D16

SS1P3L

GND_DIG

M1

M3

VDD_EXT

N

15V

AVDD_PFC

M3

M2

M1

GND_DIG

GND_DIG

231

VDD_EXT

GND_DIG

SML4747

D14

M3

IBUS_SHUNT+

IBUS_SHUNT+

IA_SHUNT+

V_M1

V_M2

VCC(WH)

VS(M3)

VS(M2)

IBUS_SHUNT+

GND_DIG

M1

M2

D15

BAT17

GND_DIG

+3.3V_DIG

REC_NEUTRV_M3

V_M2

+3.3V_ANA

VB(W)

VCC(VH)

VB(V)

VCC(UH)

VS(M1)

VB(U)

132

15V

3

FB

2

GND

4EN5

Vin

6SW1

BOOST

GND_DIG

GND_DIG

GND_DIG

BP2

BP1

2

GND

1

Vin

3

Vout

FIGURE A-8: POWER MODULE STAGE SCHEMATIC (SHEET 2 OF 6)

DS52074A-page 58  2012 Microchip Technology Inc.

FIGURE A-9: POWER MODULE STAGE SCHEMATIC (SHEET 3 OF 6)

IB

IA

PWM1L2

M3_H

PWM2L1

PWM1L3

M1_L

PWM_EN

V_M2

POT

MONITOR_1

1

TP

AVDD/2

1

TP

FAULT_IP/IBUS

IB

1

TP

1

TP

1

TP

1

TP

PWM1H1

M2_H

M3_L

PWM1L1

PWM_EN

PWM1H2

PWM1H3

M1_H

M2_L

PFC_PWM

V_M3

POT

VAC

IA

GND_DIG

PWM2L1

PWM1L2

PWM1H3

AVDD/2

IBUS_SHUNT-

AVDD/2

IBUS_SHUNT+

IA_SHUNT+

FAULT

HC/INDX

HB/QEB

MONITOR_2

V_M1

VACZX

PWM1L1

PWM1H1

PWM1H2

PWM1L3

+3.3V_ANA

IBUS_SHUNT+

IB_SHUNT+

AVDD/2

1

TP

1

TP

+3.3V_ANA

GND_DIG

MONITOR_3

FAULT_IP/IBUS

5 613 4

2

VACZX_VAC_POT

IBUS_SHUNT+

+3.3V_ANA

9

2Y1

6

1A3

3

2Y4

12

1Y4

15

2A3

18

1Y1

7

2Y2

5

2Y381A4

11G2

1A1

14

1Y3

16

1Y2132A2

20

VCC

19

2G

10

GND

4

1A2

11

2A1

17

2A4

VFO

GND_DIG

5 613

7 8

4

2

HA/QEA

5 613 4

2

5

1

2

3

IN+4IN-

5 613 4

2

+3.3V_ANA

+3.3V_ANA

+3.3V_ANA

13

-12+

14

9

-10+

8

6

-5+

7

2

-3+

4 11

1

74ACT244MTC

Appendix A

 2012 Microchip Technology Inc. DS52074A-page 59

dsPICDEM™ MCHV-2 Development Board User’s Guide

M

D+

D-

18F_PGD

PWM_EN

UART_TX_ISO

VDD_USB

D+

D-

18F_PGC

USB_TX_ISO

GND_DIG

TX

RX

GND_DIG

GND_DIG

+3.3V_DIG

+3.3V_DIG

BTN

GND_DIG

GND_DIG

GND_DIG

MCLR

PGC

USB_RX_ISO

416

235

416

235

GND_DIG

GND_DIG

416

235

UART_RX_ISO

ISO_D+

TARGET_MCLR

18F_PGD

MCLR_18F

USB_RX_ISO

UART_TX_ISO

POT

MCLR_18F

ISO_D-

18F_PGC

TARGET_MCLR

GND_DIG

21

UART_RX_ISO

USB_TX_ISO

PGD

+3.3V_DIG

GND_DIG

+3.3V_DIG

+3.3V_DIG

+3.3V_DIG

GND_DIG

+3.3V_DIG

+3.3V_DIG

7 98
6

987

6

12345

2

13

21

2

1

5

2

1 6

GND_DIG

5

1

2

3

IN+4IN-

ISO_VDD_USB

6

V-

4

C2+

12

R1OUT

10

T2IN

13

R1IN

7

T2OUT

16

VCC

5

C2-2V+

15

GND

1

C1+

9

R2OUT

3

C1-

11

T1IN

8

R2IN

14

T1OUT

TARGET_MCLR

+3.3V_DIG

+3.3V_DIG

5

1

2

3

IN+4IN-

23123

1

29

TAB

26

MCLR

23

PGM/RB5

8

RCO/T1CKI

11

VUSB

12

D-/VM/RC4

28

RA1/AN1

27

RA0/AN0

22

AN11/RB4

24

PGC/RB6

25

PGD/RB7

10

RC2

9

RC1/nUOE

13

D+//VP/RC5

14

TX/CK/RC6

5

VSS

17

VDD

20

INT2/RB2

16

VSS

15

RX/DT/RC7

18

INT0/RB0

21

AN9/RB3

19

INT1/RB1

2

RA3/AN37OSC2/CLKO

4

RA5/AN46OSC1/CLKI

1

RA2/AN23RA4/RCV

PIC18F2450

U2

FIGURE A-10: POWER MODULE STAGE SCHEMATIC (SHEET 4 OF 6)

DS52074A-page 60  2012 Microchip Technology Inc.

FIGURE A-11: POWER MODULE STAGE SCHEMATIC (SHEET 5 OF 6)

Appendix A

 2012 Microchip Technology Inc. DS52074A-page 61

dsPICDEM™ MCHV-2 Development Board User’s Guide

FIGURE A-12: POWER MODULE STAGE SCHEMATIC (SHEET 6 OF 6)

DS52074A-page 62  2012 Microchip Technology Inc.

Appendix A

IBUS _ SHU NT+

1

IBUS_ SHUNT-

2

IA_SHUNT+

3

IB_S HUNT+

4

VAC_ VOL 2

5

IPFC_C_SHUNT

6

PFC_L

7

REC_NEUTR

8

MONITOR_1

9

MONITOR_2

10

MONITOR_3

11

VBUS

12

VBUS / IBUS

13

IPFC/IA

14

VAC ZX_ VAC_ P OT/ IB

15

POT

16

FAULT_IP /IBUS

17

18

PWM2L1

19

HC/INDX

20

21

22

V_M1

23

V_M2

24

V_M3

25

PIM_INDX/ POT/V_ M3

26

PIM_QEB/IB/V_M2

27

PIM_QE A/IA/V_ M1

28

PIM_GE N2

29

PIM_GE N1

30

PIM_HALLC /INDX/S TP_PWM

31

PIM_PFC_PWM

32

PIM_FLT_OUT2

33

PIM_FLT_OUT1

34

PIM_POT

35

PIM_IB/POT

36

PIM_IA/IPFC

37

PIM_IBUS/VBUS

38

PIM_DC_ BUS

39

PIM_V_ M3/IBUS

40

PIM_V_ M2

41

PIM_V_ M1/POT

42

PIM_REC_NEUTR

43

PIM_PFC_L

44

PIM_IP FC_C_ SHUNT

45

PIM_VAC _VOL2

46

PIM_IB+

47

PIM_IA+

48

PIM_IBUS-

49

PIM_IBUS+

50

FIGURE A-13: INTERNAL OP AMP CONFIGURATION MATRIX BOARD SCHEMATIC

 2012 Microchip Technology Inc. DS52074A-page 63

dsPICDEM™ MCHV-2 Development Board User’s Guide

IBUS_S HUNT+

1

IBUS_S HUNT-

2

IA_SHUNT+

3

IB_SHUNT +

4

VAC_VOL2

5

IPFC_ C_SHUNT

6

PFC_L

7

REC_NEUTR

8

MONITOR_1

9

MONITOR_2

10

MONITOR_3

11

VBUS

12

VBUS/ IBUS

13

IPFC/IA

14

VACZX_VAC_ POT/IB

15

POT

16

FAULT_IP/ IBUS

17

18

PWM2L1

19

HC/INDX

20

21

22

V_M1

23

V_M2

24

V_M3

25

PIM_INDX/ POT/V_ M3

26

PIM_QEB/IB/V_M2

27

PIM_QE A/IA/V_ M1

28

PIM_GE N2

29

PIM_GE N1

30

PIM_HALLC /INDX/S TP_PWM

31

PIM_PFC_PWM

32

PIM_FLT_OUT2

33

PIM_FLT_OUT1

34

PIM_POT

35

PIM_IB/POT

36

PIM_IA/IPFC

37

PIM_IBUS/VBUS

38

PIM_DC_ BUS

39

PIM_V_ M3/IBUS

40

PIM_V_ M2

41

PIM_V_ M1/POT

42

PIM_REC_NEUTR

43

PIM_PFC_L

44

PIM_IP FC_C_ SHUNT

45

PIM_VAC_ VOL2

46

PIM_IB+

47

PIM_IA+

48

PIM_IBUS-

49

PIM_IBUS+

50

FIGURE A-14: EXTERNAL OP AMP CONFIGURATION MATRIX BOARD SCHEMATIC

DS52074A-page 64  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

BOARD USER’S GUIDE

Appendix B. Debugging and Troubleshooting with MPLAB® 8

This appendix provides debug and programming guidance for MPLAB 8 users. For
more information on how to use MPLAB 8 IDE, refer to the following documentation:

• “MPLAB IDE User’s Guide” (DS51519)

• “MPLAB IDE Quick Start Guide” (DS51281)

• MPLAB IDE Online Help

B.1 SETTING UP AN APPLICATION FOR DEBUGGING

To prepare the application for debug:

1. Launch MPLAB IDE, and then open the application project. The related work­space will be open. For information on projects and workspaces, see the MPLAB
IDE documentation mentioned at the beginning of this chapter.

2. Select Project>Build All
visible in the Build tab of the Output window.

3. Select Debugger>Select Tool>Starter Kit on Board
add Starter Kit on Board debug features (Figure B-1): 1) the status bar will show
Starter Kit on Board as the debug tool, 2) a Starter Kit on Board debug toolbar
will be added, 3) the Debugger menu will change to add Starter Kit on board
debug functions, and 4) the Output window will display communication status
between MPLAB IDE and the Starter Kit on Board on the Starter Kit on Board tab.

to build the application code. The build’s progress will be

. MPLAB IDE will change to

FIGURE B-1: STARTER KIT ON BOARD AS DEBUG TOOL

 2012 Microchip Technology Inc. DS52074A-page 65

dsPICDEM™ MCHV-2 Development Board User’s Guide

4. Select Debugger>Program to program the application code into the target PIC24
MCU or dsPIC DSC device on the dsPICDEM MCHV-2 Development board. The
debug programming progress will be visible in the Starter Kit on Board tab of the
Output window.

Note: Debug executive code is automatically programmed in the upper program

memory of the Starter Kit on Board device when the Starter Kit on Board is
selected as a debugger. Debug code must be programmed into the target
device to use the in-circuit debugging capabilities of the Starter Kit on
Board.

B.2 RUNNING THE APPLICATION

The Starter Kit on Board executes in either real-time (Run) or steps (Step Into, Step
Over, and Animate) real-time execution occurs when you select Run in MPLAB IDE.
Once the target device code is halted, either by Halt or a breakpoint, you can step.

Toolbar buttons can be used for quick access to commonly used debug operations.
Refer to Section 3.3 “Running the Example Application” in the “MPLAB Starter Kit for

®

dsPIC

Digital Signal Controllers User’s Guide” (DS51700).

Note: All the peripherals are frozen when the “Halt” button is pressed to stop the

program execution.

To see how these options function, do the following:

1. Select Debugger>Reset>Processor Reset
program.

2. Select Debugger>Run

3. Select Debugger>Halt
green solid arrow will mark the line of code in the File window where the program
halted.

4. Select Debugger>Step Into
cution once. The green solid arrow will move down one line of code in the File
window. Repeatedly click the button to step through the code.

5. Select Debugger>Reset>Processor Reset
program again. The arrow will disappear, meaning the device is reset.

or click the Run button. Observe how the application operates.

or click the Halt button to stop the program execution. A

or click the Step Into button to step the program exe-

or click the Reset button to reset the

or click the Reset button to reset the

DS52074A-page 66  2012 Microchip Technology Inc.

B.3 DEBUGGING THE APPLICATION

Existing Code

MPLAB IDE provides an editor and several debug features such as breakpoints and
Watch windows to aid in application code debugging.

B.3.1 Editing Application Code

To view application code so it may be edited, do one of the following:

1. Select Edit>New

existing code file, or double click a file in the Project window to open an existing
code file. See an example Project window in Figure B-2.

FIGURE B-2: PROJECT EXAMPLE

to create new code or Edit>Open to search for and open an

Appendix B

For more information on using the MPLAB Editor to create and edit code, see the
MPLAB Editor Help.

B.3.2 Using breakpoints and Mouseovers

To set a breakpoint in code:

1. Double click the gutter: Double click in the window gutter next to the line of code

where you want the breakpoint. Double click again to remove the breakpoint.

2. Note: Double click must be set up for breakpoints. Select the Edit>Properties

click the ASM/C/BAS File Type tab, and then select the “Double-click Toggles
Breakpoint” check box.

3. Pop-up Menu: Place the cursor over the line of code where you want the break-

point. Then, right-click to pop up a menu and select Set Breakpoint. Once a
breakpoint is set, “Set Breakpoint” will become “Remove Breakpoint” and “Dis­able breakpoint”. Other options on the popup menu under Breakpoints are for
deleting, enabling, or disabling all breakpoints.

4. Breakpoint Dialog: Open the Breakpoint dialog (Debugger>Breakpoints

delete, enable, or disable breakpoints. See the MPLAB IDE Help for more information
on this dialog.

5. A breakpoint set in code will appear as a red hexagon with a “B” as shown in

Figure B-3.

, and

) to set,

 2012 Microchip Technology Inc. DS52074A-page 67

dsPICDEM™ MCHV-2 Development Board User’s Guide

FIGURE B-3: BREAKPOINT EXAMPLE

Once code is halted, hovering over a variable opens a tool tip window that contains the
current value of the variable.

Note: This feature must be configured. Select Edit>Properties and click the

Tooltips tab, and select the “Enable Variable Mouseover Values” check box.

DS52074A-page 68  2012 Microchip Technology Inc.

Appendix B

B.3.3 Using Watch Windows

To use a Watch window:

1. The Watch window is made visible on the desktop by selecting View>Watch

contains four selectable Watch views (via tabs) in which to view variables (SFRs,
symbols and absolute addresses).

2. Select an SFR or Symbol from the list and click the related Add button to add it

to the Watch window. Or click in the “Address” column and enter an absolute
address.

A Watch window populated with SFRs and Symbols will look like Figure B-4. For more
on using Watch windows, see MPLAB IDE Help.

FIGURE B-4: WATCH WINDOW EXAMPLE

. It

B.4 PROGRAMMING AN APPLICATION

When the program is successfully debugged and running, the next step is to program
the device for stand-alone operation in the finished design. When doing this, the
resources reserved for debug are released for use by the application. To program the
application, use the following steps:

1. Disable Starter Kit on Board as a debug tool by selecting Debugger>Select

Tool>None.

2. Select Starter Kit on Board as the programmer in the Programmer>Select

Programmer menu.

3. Select Programmer>Program

At this point, the application code will run independently.

.

 2012 Microchip Technology Inc. DS52074A-page 69

dsPICDEM™ MCHV-2 Development Board User’s Guide

B.5 DETERMINING DEVICE SUPPORT AND RESERVED RESOURCES

Due to the built-in in-circuit debugging capability of ICD devices and the ICSP function
offered by the debugger, the Starter Kit on Board uses some on-chip resources when
debugging. It also uses program memory and file register locations in the target device
during debugging. These locations are not available for use by user code. In the
MPLAB IDE, registers marked with an “R” in the register display represents reserved
registers.

For information on device resources that are needed for in-circuit debugging, please
refer to the MPLAB ICD 2 Help, found in MPLAB IDE under Help>Topics
reserved resource information found under “Resources Used By MPLAB ICD 2” is the
same for the Starter Kit on Board.

B.6 TROUBLESHOOTING

B.6.1 Debugging Connection Problems

While using the Starter Kit on Board as a debugger, you may receive the error “Starter
Kit on Board not connected to this computer” when programming the device. This can
result from communication being lost between the Starter Kit on Board and MPLAB
IDE. To resolve this:

1. Unplug the USB cable from the Starter Kit on Board.

2. Plug the USB cable back into the Starter Kit on Board.

MPLAB IDE should automatically reconnect to the Starter Kit on Board. If this does not
work, do the following:

1. Check the USB connection between the PC and Starter Kit on Board at both
ends.

2. If using a USB hub, make sure it is powered.

3. Make sure the USB port is not in use by another device.

. The device

B.6.2 PROGRAMMING PROBLEMS

If during the course of developing your own application you can no longer program the
device on the Starter Kit on Board, you may have set device configuration bits to code
protect or some other state that prevents programming. To view the settings of the
configuration bits, select Configure>Configuration bits

B.7 SETTINGS DIALOG AND INFO TAB

When you select Debugger>Settings or Programmer Settings, you will open the Starter
Kit on Board Settings dialog. Currently, there is only one tab (Info) on this dialog, which
provides the following information:

• Firmware Version: The version of firmware on the Starter Kit on Board.

• Debug Exec Version: The version of the debug executive that is loaded into the

target device program memory to enable debug operation.

.

DS52074A-page 70  2012 Microchip Technology Inc.

dsPICDEM™ MCHV-2 DEVELOPMENT

BOARD USER’S GUIDE

Index

A

Application Debug Setup ......................................... 27

Application Debugging ............................................. 30

Application Programming......................................... 30

C

Communication Port Connectors ............................. 25

Connection Sequence.............................................. 25

Customer Notification Service.................................. 12

Customer Support.................................................... 13

D

DC BUS Current Feedback...................................... 44

DC BUS Overcurrent................................................ 45

DC BUS Voltage Feedback ..................................... 44

Demonstration Software .......................................... 33

Documentation

Conventions...................................................... 10

Layout ................................................................. 9

dsPICDEM™ MCHV-2 Development Board

Block Diagram .................................................. 17

Features............................................................ 18

Overview........................................................... 15

H

Hall Sensors............................................................. 43

Hardware Components ............................................ 35

I

Interface Components.............................................. 22

Internet Address....................................................... 12

Inverter Leg Shunt Resistor Feedback..................... 44

M

Microchip Internet Web Site ..................................... 12

P

PFC Stage.......................................................... 21, 35

Phase Voltage Feedback ......................................... 43

Power Connections ............................................ 23

Power Module .......................................................... 43

Power Module Stage.......................................... 21

Power Supplies ........................................................ 42

Power-down Sequence ............................................ 27

Power-up Sequence................................................. 27

Programming and Debugging .................................. 27

Programming Problems ........................................... 31

, 25

, 40

R

Reading, Recommended ......................................... 11

Running the Starter Kit on Board Application........... 29

S

Safety Notice.............................................................. 5

System Connections ................................................ 24

T

Troubleshooting ....................................................... 31

W

Warranty Registration .............................................. 11

WWW Address......................................................... 12

 2012 Microchip Technology Inc. DS52074A-page 71

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