Microchip Technology MCP1630 Reference Manual

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MCP1630

+12V In Dual Output

Buck Converter

Reference Design

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MCUs and dsPIC® DSCs, KEELOQ

code hopping

MCP1630 DUAL BUCK

REFERENCE DESIGN

Table of Contents

Preface ...........................................................................................................................1

Chapter 1. Product Overview

1.1 Introduction .....................................................................................................5

1.2 What IS the MCP1630 Dual Buck Reference Design? ..................................6

1.3 What the MCP1630 Dual Buck Reference Design kit includes ...................... 6

Chapter 2. Installation and Operations

2.1 Introduction .....................................................................................................7

2.2 Features .........................................................................................................7

2.3 Getting Started ...............................................................................................7

Appendix A. Schematic and Layouts

A.1 Introduction and Highlights ..........................................................................13

A.2 Board - Schematic - Sheet 1 ........................................................................14

A.3 Board - SchEmatic - Sheet 2 .......................................................................15

A.4 Board - Top Layer ........................................................................................16

A.5 Board - Mid-Layer 1 ..................................................................................... 17

A.6 Board - Mid-Layer 2 ..................................................................................... 18

A.7 Board - Bottom Layer ...................................................................................19

Appendix B. Bill Of Materials (BOM) Appendix C. Evaluation Board Firmware

C.1 Device Firmware ..........................................................................................23

Worldwide Sales and Service ....................................................................................24

MCP1630 Dual Buck Reference Design

NOTES:

MCP1630 DUAL BUCK

REFERENCE DESIGN

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.

IDE on-line help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the MCP1630 Dual Buck Reference Design. Items discussed in this chapter include:

• Document Layout

• Conventions Used in this Guide

• Recommended Reading

• The Microchip Web Site

• Customer Support

• Document Revision History

DOCUMENT LAYOUT

This document describes how to use the MCP1630 Dual Buck Reference Design as a development tool. The manual layout is as follows:

• Chapter 1. “Product Overview” – Important information about the MCP1630 Dual Buck Reference Design.

• Chapter 2. “Installation and Operations” – Includes instructions on how to get started with this reference design and a description of the reference design operation.

• Appendix A. “Schematic and Layouts” - Shows the schematic and layout diagrams for the MCP1630 Dual Buck Reference Design.

• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the MCP1630 Dual Buck Reference Design.

• Appendix C. “Evaluation Board Firmware” - Provides information about the application firmware and where the source code can be found.

MCP1630 Dual Buck Reference Design

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 brackets 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)

{ ... }

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

Preface

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. Lo cal 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 B (July 2008)

• Changed U2 and U7 to MCP14628;

• Changed U4 to MCP1703.

Revision A (February 2005)

• Inital Release of this Document.

MCP1630 Dual Buck Reference Design

NOTES:

Chapter 1. Product Overview

Synch

Gate Drive

PWM

OSC

COMP

REF

OUT1

Synch

Gate Drive

PWM

OSC

COMP

REF

OUT2

PIC16F684

Active-Filter MCP6231 SC-70

BUCK

OUT1

OUT2

OUT1

OUT2

60T

Temp

Sense

Temp

Sense

Temperature sensor located close to the power switches of each channel

“Bit bang reference”

MCP1630

–

1.1 INTRODUCTION

The MCP1630 Dual Buck Reference Design is used to evaluate the Microchip MCP1630 analog, high-speed Pulse Width Modulator (PWM) used in a dual synchronous, buck regulator , power-converter application. The evaluation board is a comple te, stand-alone, dual-output, dc-dc converter with +12V input, adjustable dual output at 20A per output.

This chapter also covers the following topics:

• What is the MCP1630 Dual Buck Reference Design?

• What the MCP1630 Dual Buck Reference Design kit includes.

MCP1630 DUAL BUCK

REFERENCE DESIGN

FIGURE 1-1: Dual Buck Converter Block Diagram.

MCP1630 Dual Buck Reference Design

1.2 WHAT IS THE MCP1630 DUAL BUCK REFERENCE DESIGN?

The MCP1630 Dual Buck Reference Design is a complete, stand-alone, dual-output power supply capable of 20A per output, po wered from a +12V input source. This board utilizes Microchip’s MCP1630 (high-speed PIC SOT-89), PIC16F 684 (MCU Flash TSSOP14 ), MCP6231U (Op Amp SC-70) , TC6501 (Temperature Switch SOT23A-5) and MCP14628 (synchronous MOSFET driver SOIC8). The input voltage range for the reference design is +9.0V to +13.5V. Both adjustable regulated outputs are capable of 20A.

Input terminals are provided to apply an intput voltage to the power supply. Output terminals are also provided as a way to connect the 20A outputs to a load.

1.3 WHAT THE MCP1630 DUAL BUCK REFERENCE DESIGN KIT INCLUDES

This MCP1630 Dual Buck Reference Design Kit includes:

• The MCP1630 Dual Buck Reference Design (102-00035)

• Analog and Interface Product Demonstration Boards CD-ROM (DS21912)

- MCP1630 Dual Buck Reference Design (DS51531)

- MCP1630 Data Sheet (DS21896)

MCU PWM MSOP8), MCP1703 (LDO

Chapter 2. Installation and Operations

2.1 INTRODUCTION

The MCP1630 Dual Buck Reference Design demonstrates Microchip’s MCP1630 high-speed PWM, used in an adjustable, dual-output, buck regulator application. The MCP1630 is a high-speed, microcontroller-adaptable, PWM that, when used in conjunction with a microcontroller, will control the power system duty cycle to provide output voltage regulation. The PIC16F684 microcontroller can be used to regulate output voltage or current, switching frequency and setting maximum duty cycle. The MCP1630 generates duty cycle, provides fast overcurrent protection and utilizes variable external inputs. External signals include the input oscillator and the reference voltage. The power train signals include the current sense and the feedback voltage. The output signal is a square-wave pulse. The power train used fo r the MCP1630 Dual Buck Reference Design is a dual synchronous buck regulator.

2.2 FEATURES

The MCP1630 Dual Buck Reference Design has the following features:

• Input Voltage Range: +9.0V to +13.5V

• Adjustable Output Voltage Capable of Calibration

• Sequencing or Tracking Outputs

• Outputs are180° out of phase, each capable of 20A

• Independent Overcurrent Protection

• Independent Overtemperature Protection

• Input Overvoltage and Undervoltage Lockout (UVLO)

• Power Good Indication (LED) with Adjustable Delay

• Switching Frequency Dithering

MCP1630 DUAL BUCK

REFERENCE DESIGN

2.3 GETTING STARTED

The MCP1630 Dual Buck Reference Design is fully assembled and tested over its range of input voltage, output voltage and output current. This board requires the use of an external input voltage source (+9.0V to +13.5V) and external load (electronic or resistive).

Note: It is recommended that a minimum 300 linear feet per minute of airflow

blown directly across the board to cool the power dissip ating components when operating above 10A loads.

MCP1630 Dual Buck Reference Design

2.3.1 Power Input and Output Connections Powering the MCP1630 Dual Buck Reference Design.

1. Apply the input voltage to the connector (J3) provided. Connect the positive side of the input source (+) to the test point (J3-1). Connect the negative (or return side (-)) of the input source to the GND terminal (J3-2). J3 is the center two position terminal block located on the left side of the board. A 14-gauge wire size is recommended for evaluating the boar d at 20A pe r ou tp u t. The po we r su pp ly input voltage must be in the specified operating range for the board to operate. An undervoltage lockout circuit prevents the converter from running when the input voltage is too low.

2. An on/off push-button switch (SW3) is used to turn the converter ou tputs on and off. During normal power-up, the outputs are turned on by pressing SW3 once. To turn the outputs off, press SW3 again.

3. In the event of a fault, (input voltage out-of-range, output volt age out-of-range or power train overtemperature), both V by the D1 power good LED flashing. T o rest art, the input voltage must be brought to 0V and raised back to the specified input voltage range o f the co nverte r p rior to pressing the on/off button. A solid D1 power good LED indicates that the regulator outputs are operating properly at their programmed values.

OUT1

and V

OUT2

will shut down, indicated

Applying the load to the MCP1630 Dual Buck Reference Design.

1. To apply a load to V the positive side of th e V (J2-2). The negative side of the V GND (J2-1).

2. To apply a load to V the positive side of th e V (J4-2). The negative side of the V GND (J4-1).

3. Outputs V

and VO2 are independent of each other and are loaded sep arately.

Both outputs have independent over current protection, overtemperature and short-circuit protection.

Note: The maximum rated load is 20A per output. When loading the board over

10A, airflow is necessary to prevent the overtemperature protection circuitry from automatically turing off the power train that has the overtemperature condition.

of the MCP1630 Dual Buck Reference Design,

OUT1

OUT2

load (+) should be connected to the terminal +VO1

load should be connected to the terminal

of the MCP1630 Dual Buck Reference Design,

load (+) should be connected to the terminal +VO2

load should be connected to the terminal

2.3.2 Power Present and Power Good Indication

1. The MCP1630 Dual Buck Reference Design has two status LED’s. One LED (D3) is used to determine if input voltage is present.

2. The second LED (D1) is used for fault and power good indication. During normal operation, if both regulator outputs are within regulation, D1 is illuminated to provide indication that power is good. If either output is out of regulation, D1 will blink, providing indication that one or both of the outputs are not in regulation.

Installation and Operations

BOARD

On/Off

Select

Mode

2.3.3 Programming

1. The MCP1630 Dual Buck Reference Design can be programmed to calibrate

, V

OUT1

on or off.

2. To enter the programming mode, apply input voltage within the specified

operating range (9V to 13.5V). Press and hold the M (SW1) button. While still holding the M button, press and release the on/off (SW3) button. The flashing rate of LED D1 should increase, indicating Programming mode.

3. Once in Programming mode, the first variable to set is V

S button to increase V it wraps around to the minimum setting.

, output sequencing or tracking and switching frequency dith er ing

OUT2

. Press the select

. Keep pressing the S button to increase V

OUT1

until

Note: The range of V

. The range of V

is controlled by the value of fixed resistors R34, R35 and

OUT1

is typically from 2.42V (minimum) to 3.39V

OUT1

(maximum).

4. Press M once to select V

similar to setting V

Note: The range of V

. The range of V

OUT1

OUT2

. V

in increased by pressing the S button

OUT2

is controlled by the value of fixed resistors R14, R15 and

is typically from 1.22V (minimum) to 2.3V

OUT2

(maximum).

5. Press M once to select between output sequencing or tracking. D1 flashing

indicates that sequencing is selected. Press M to change from sequencing to tracking, or from tracking to sequencing.

6. Press M once to select between frequency dithering on and frequency dithering

off. D1 flashing indicates that frequency dithering is selected.

7. By pressing and holding the M button, the selected settings will be programmed.

The next power-up cycle for the converter will return to the programmed settings.

FIGURE 2-1: Mode, Select and On/Off Switch Location.

MCP1630 Dual Buck Reference Design

NOTES:

Appendix A. Schematic and Layouts

A.1 INTRODUCTION AND HIGHLIGHTS

This appendix contains the following schematics and layouts for the MCP1630 Dual Buck Reference Design:

• Board Schematic - Sheet 1

• Board Schematic - Sheet 2

• Board - Top Layer

• Board - Mid-Layer 1

• Board - Mid-Layer 2

• Board - Bottom Layer

MCP1630 DUAL BUCK

REFERENCE DESIGN

MCP1630 Dual Buck Reference Design

A.2 BOARD SCHEMATIC - SHEET 1

A.3 BOARD SCHEMATIC - SHEET 2

Schematic and Layouts

MCP1630 Dual Buck Reference Design

BOARD

A.4 BOARD - TOP LAYER

A.5 BOARD - MID-LAYER 1

BOARD

Schematic and Layouts

MCP1630 Dual Buck Reference Design

MIDLAYER2

BOARD

A.6 BOARD - MID-LAYER 2

A.7 BOARD - BOTTOM LAYER

Schematic and Layouts

MCP1630 Dual Buck Reference Design

NOTES:

MCP1630 DUAL BUCK

REFERENCE DESIGN

Appendix B. Bill Of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM)

Qty Reference Description Manufacturer Part Number

9 C1, C9, C16,

C25, C26, C29,

C33, C36, C38 4 C2, C4, C20, C37 CAP 1500PF 50V CERAMIC NPO 0603 Panasonic - ECG ECJ-1VB1H152K 2 C3, C15 CAP 220UF 4V AO X7343 Kemet 2 C5, C19 CAP 9.0PF 50V CERAMIC NPO 0603 Panasonic - ECG ECJ-1VC1H090D

10 C6, C7, C11,

C14, C17, C27,

C30, C31, C32,

C34 2 C8, C18 CAP 4.7UF 10V CERAMIC X5R 0603 Panasonic - ECG ECJ-1VB0J475M 2 C10, C35 CAP .22UF 10V CERAMIC X5R 0603 Panasonic - ECG ECJ-1VB1A224K 2 C12, C13 CAP 22UF 16V CERAMIC X5R 1210 TDK Electronics

2 C21, C22 CAP DNP0603 2 C23, C39 CAP 33PF 50V CERAMIC NPO 0603 Panasonic - ECG ECJ-1VC1H330J 2 C24, C40 CAP 1000PF 50V CERAMIC NPO 0603 Panasonic - ECG ECJ-1VC1H102J 1 C28 CAP CERAMIC 18PF 50V 0603 SMD Panasonic - ECG ECJ-1VC1H180J 2 D1, D3 LED 660NM SUPER RED DIFF 0603SMD Lumex

1 D2 DIODE SCHOTTKY 25V 1.0A MINI-2P Panasonic - SSG MA2YD2300L 1 J1 CONN MOD JACK 6-6 R/A PCB 50AU AMP/Tyco

3 J2, J3, J4 CONN TERM BLOCK 2POS 5MM PCB Phoenix Contact 2 L1, L2 HIGH CURRENT SMT 1UH INDUCTORS Cooper Electronics HC1-1R1 2 Q1, Q4 N-CHANNEL MOSFET DPAK Fairchild

2 Q2, Q3 N-CHANNEL MOSFET DPAK Fairchild

10 R1, R6, R12,

R17, R20, R23,

R27, R31, R43,

R52 6 R2, R19, R22,

R25, R29, R50 2 R3, R24 RES 3.30 OHM 1/4W 1% 1206 SMD Yageo America 9C12063A3R30FGHFT 2 R4, R46 RES 1.00K OHM 1/16W 1% 0603 SMD Panasonic - ECG P1.00KHCT-ND 2 R5, R18 RES 221 OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF2210V 4 R7, R9, R16, R21 RESISTOR 1.0 OHM 1/10W 5% 0603 Panasonic - ECG ERJ-3GEYJ1R0V 2 R8, R45 RES 14.7K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1472V 2 R10, R15 RES 24.9K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF2492V

Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM

used in manufacturing uses all RoHS-compliant components.

CAP 1.0UF 10V CERAMIC X5R 0603 Panasonic

CAP .10UF 10V CERAMIC X7R 0603 Kemet

Corporation

Components Inc.

Electronics

Semiconductor

RES 10.0 OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF10R0V

RES DNP0603

- ECG ECJ-1VB1A105K

Electronics®A700X227M004ATE015

Electronics C0603C104K8RACTU

C3225X5R1C226M

Opto/

SML-LX0603SRW-TR

555165-1

1715022

FDD6676S

FDD6670A

MCP1630 Dual Buck Reference Design

TABLE B-1: BILL OF MATERIALS (BOM) (CONTINUED)

Qty Reference Description Manufacturer Part Number

3 R11, R39, R44 RES 7.87K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF7871V 1 R13 RES 4.99K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF4991V 1 R14 RES 22.1K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF2212V 3 R26, R40, R51 RES 3.01K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF3011V 2 R28, R49 RES 30.1K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF3012V 1 R30 RES 4.75K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF4751V 1 R32 RES 2.0K OHM 1/10W 5% 0603 SMD Panasonic - ECG ERJ-3GEYJ202V 3 R33, R36, R48 RES 100K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1003V 2 R34, R41 RES 15.0K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1502V 2 R35, R42 RES 10.0K OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1002V 1 R37 RES 2.2 OHM 1/4W 1% 1206 SMD Panasonic - ECG ERJ-8RQF2R2V 1 R38 RES 332 OHM 1/16W 1% 0603 SMD Panasonic - ECG ERJ-3EKF3320V 1 R47 RES 2.21K OHM 1/16W 1% 0603 SMD Panasonic - ECG P2.21KHCT-ND 3 SW1, SW2, SW3 SWITCH TACT 6MM 260GF SMT E-Switch Inc. TL3301NF260QG 1 T1 SMD Current Sense Transformer Datatronics™ CT323-060 1 TP6 PC TEST POINT COMPACT SMT Keystone

Electronics

2 U1, U8 High-Speed Analog PWM MSOP8 Microchip

Technology Inc.

2 U2, U7 2A Synchronous MOSFET Driver Microchip

Technology Inc.

2 U3, U6 5 Lead SC70 OP AMP Microchip

Technology Inc.

1 U4 250 mA Low Iq LDO Regulator Microchip

1U5 IC PIC

2 U9, U10 MCP6501 TEMPERAT URE SWITCH 75°C Microchip

Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM

used in manufacturing uses all RoHS-compliant components.

MCU FLASH 2KX14 14TSSOP Microchip

Technology Inc.

5016

MCP1630-E/MS

MCP14628-E/SN

MCP6231U

MCP1703-5002E/MB

PIC16F684-I/ST

TC6501P075VCTTR

Appendix C. Evaluation Board Firmware

Power-Up

Initialize:

Ports, Clocks, A/D,

PWM, IIC and

Interrupts

Yes

Detected?

Mode

Pressed?

Start Converter

Using programmed

settings

LED Flashing

Turn V

OUT1

Mode

Pressed?

Set

Pressed?

Set up V

OUT2

Select

Sequencing

Select Frequency

Dithering On or

Off

Setup

Complete

Increment

PWM

Yes

Fault

Detected

Yes

Shutdown Converter

Flash LED

Off

Detected

End

Yes

ok?

or Tracking

C.1 DEVICE FIRMWARE

For the latest version of the MCP1630 Dual Buck Re ference Design firmware, visit the Microchip web site at www.microchi p.com.

MCP1630 DUAL BUCK

REFERENCE DESIGN

FIGURE C-1: Firmware Flowcharge - Page 1.

WORLDWIDE SALES AND SERVICE

AMERICAS

Corporate Office

2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Te chnical Support: http://support.microchip.com Web Address: www.microchip.com

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Tel: 86-27-5980-5300 Fax: 86-27-5980-5118

China - Xiamen

Te l: 86-592-2388138 Fax: 86-592-2388130

China - Xian

Tel: 86-29-8833-7252 Fax: 86-29-8833-7256

China - Zhuhai

Tel: 86-756-3210040 Fax: 86-756-3210049

ASIA/PACIFIC

India - Bangalore

Tel: 91-80-4182-8400 Fax: 91-80-4182-8422

India - New Delhi

Tel: 91-11-4160-8631 Fax: 91-11-4160-8632

India - Pune

Tel: 91-20-2566-1512 Fax: 91-20-2566-1513

Japan - Yokohama

Tel: 81-45-471- 6166 Fax: 81-45-471-6122

Korea - Daegu

Tel: 82-53-744-4301 Fax: 82-53-744-4302

Korea - Seoul

Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934

Malaysia - Kuala Lumpur

Tel: 60-3-6201-9857 Fax: 60-3-6201-9859

Malaysia - Penang

Tel: 60-4-227-8870 Fax: 60-4-227-4068

Philippines - Manila

Tel: 63-2-634-9065 Fax: 63-2-634-9069

Singapore

Tel: 65-6334-8870 Fax: 65-6334-8850

Taiwan - Hsin Chu

Tel: 886-3-572-9526 Fax: 886-3-572-6459

Taiwan - Kaohsiung

Tel: 886-7-536-4818 Fax: 886-7-536-4803

Taiwan - Taipei

Tel: 886-2-2500-6610 Fax: 886-2-2508-0102

Thailand - Bangkok

Tel: 66-2-694-1351 Fax: 66-2-694-1350

EUROPE

Austria - Wels

Tel: 43-7242-2244-39 Fax: 43-7242-2244-393

Denmark - Copenhagen

Tel: 45-4450-2828 Fax: 45-4485-2829

France - Paris

Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79

Germany - Munich

Tel: 49-89-627-144-0 Fax: 49-89-627-144-44

Italy - Milan

Tel: 39-0331-742611 Fax: 39-0331-466781

Netherlands - Drunen

Tel: 31-416-690399 Fax: 31-416-690340

Spain - Madrid

Tel: 34-91-708-08-90 Fax: 34-91-708-08-91

UK - Wokingham

Tel: 44-118-921-5869 Fax: 44-118-921-5820

01/02/08

Microchip Technology MCP1630 Reference Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

INTRODUCTION

DOCUMENT LAYOUT

CONVENTIONS USED IN THIS GUIDE

RECOMMENDED READING

THE MICROCHIP WEB SITE

CUSTOMER SUPPORT

DOCUMENT REVISION HISTORY

Chapter 1. Product Overview

1.1 INTRODUCTION

1.2 WHAT IS THE MCP1630 DUAL BUCK REFERENCE DESIGN?

1.3 WHAT THE MCP1630 DUAL BUCK REFERENCE DESIGN KIT INCLUDES

Chapter 2. Installation and Operations

2.1 INTRODUCTION

2.2 FEATURES

2.3 GETTING STARTED

Appendix A. Schematic and Layouts

A.1 INTRODUCTION AND HIGHLIGHTS

A.2 BOARD SCHEMATIC - SHEET 1

A.3 BOARD SCHEMATIC - SHEET 2

A.4 BOARD - TOP LAYER

A.5 BOARD - MID-LAYER 1

A.6 BOARD - MID-LAYER 2

A.7 BOARD - BOTTOM LAYER

Appendix B. Bill Of Materials (BOM)

Appendix C. Evaluation Board Firmware

C.1 DEVICE FIRMWARE

WORLDWIDE SALES AND SERVICE