Microchip Technology MCP1602 User Manual

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MCP1602

Evaluation Board

User’s Guide

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MCUs and dsPIC® DSCs, KEELOQ

code hopping

MCP1602 EVALUATION BOARD

USER ’S GUIDE

Table of Contents

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

Introduction............................................................................................................1

Document Layout..................................................................................................1

Conventions Used in this Guide............................................................................ 2

Recommended Reading........................................................................................2

The Microchip Web Site........................................................................................3

Customer Support.................................................................................................3

Document Revision History................................................................................... 3

Chapter 1. Product Overview

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

1.2 What is the MCP1602 Evaluation Board? ...................................................... 6

1.3 What the MCP1602 Evaluation Board kit includes ......................................... 6

Chapter 2. Installation and Operation

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

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

2.3 Getting Started ...............................................................................................8

Appendix A. Schematic and Layouts

A.1 Introduction ..................................................................................................11

A.2 Board – Schematic .......................................................................................12

A.3 Board – Top Layer .......................................................................................13

A.4 Board – Top Metal Layer ............................................................................. 14

A.5 Board – Bottom Layer ................................................................................. 15

Appendix B. Bill Of Materials (BOM)

Worldwide Sales and Service ....................................................................................18

MCP1602 Evaluation Board User’s Guide

NOTES:

MCP1602 EVALUATION 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.

IDE on-line help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the MCP1602 Evaluation Board. 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 MCP1602 Evalu a tio n Boa rd as a development tool. The manual layout is as follows:

• Chapter 1. “Product Overview” – Important information about the MCP1602 Evaluation Board.

• Chapter 2. “Installation and Operation” – Includes instructions on how to get started with this user’s guide and a description of the user’s guide.

• Appendix A. “Schematic and Layouts” – Shows the schematic and layout diagrams for the MCP1602 Evaluation Board.

• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the MCP1602 Evaluation Board.

MCP1602 Evaluation 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 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

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

Preface

DOCUMENT REVISION HISTORY

Revision A (November 2007)

• Initial Release of this Document.

MCP1602 Evaluation Board User’s Guide

NOTES:

Chapter 1. Product Overview

1.1 INTRODUCTION

The MCP1602 Evaluation Board demonstrates the features and capabilities of Microchip’s MCP1602 Evaluation Board 500 mA PFM/PWM Synchronous Buck Regulator. The MCP1602 is a step-down (Buck) switching regulator with a Power-Good monitor to provide a highly integrated solution for systems that requir e supply voltage between 0.8V to 4.5V. The MCP1602 requires input voltage range from 2.7V to 5.5V. The MCP1602 Evaluation Board includes a MCP1602 circuit tha t has a Shut down feature and a 4-position Dip Switch to select between differe nt output voltages. MCP1602 Evaluation Board is available in 0.8V, 1.2V, 1.8V , 2.5V and 3.3V. Additional test points are available on the MCP1602 Evaluation Board for reviewing the performances and features of MCP1602 Evaluation Board.

This chapter covers the following topics:

• What is the MCP1602 Evaluation Board?

• What the MCP1602 Evaluation Board Kit includes

MCP1602 EVALUATION BOARD

USER ’S GUIDE

FIGURE 1-1: MCP1602 Typical Applications With Adjustable Output Voltage.

MCP1602 Evaluation Board User’s Guide

1.2 WHAT IS THE MCP1602 EVALUATION BOARD?

The MCP1602 Evaluation Board demonstrates the use of PFM/PWM Synchronous Buck Controller that regulates output voltages from 0.8V to 4.5V with Adjustable version or 1.2V, 1.5V, 1.8V, 2.5V and 3.3V with Fixed-Output version.

The MCP1602 Evaluation Board Evaluation Board is setup to evaluate simple DC-to-DC conversion. This board utilizes Microchip's MCP1602 Evaluation Board (PFM/PWM Synchronous Buck Regulator) that effectively step s down from V regulated V PG pin. The MCP1602 on the MCP1602 Evaluation Board is enabled and can be turned off by pulling the

The MCP1602 Evaluation Board is designed to observe the per formance and features on the circuit via multiple test points. Users can also discover the compact size of the layout in addition to the device itself. The circuit can also be implemented into su itable applications without extra work.

1.3 WHAT THE MCP1602 EVALUATION BOARD KIT INCLUDES

This MCP1602 Evaluation Board Kit includes:

• MCP1602 Evaluation Board, 102-00120

• MCP1602 Device with adjustable output voltage (Installed)

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

- MCP1602 Evaluation Board User’s Guide, DS51691

- MCP1602 Evaluation Board Data Sheet, “2..0 MHz, 500 mA Synchronous Buck Regulator with Power-Good”, DS22061

. The Power Good function can be observed via the output signal o n the

OUT

SHDN pin low.

Chapter 2. Installation and Operation

2.1 INTRODUCTION

The MCP1602 Evaluation Board demonstrates Microchip's MCP1602 device. This device is a 500 mA, 2.0 MHz PFM/PWM Step-Down DC/DC Regulators With Power-Good feature. It is available in adjustable and fixed outputs.The MCP1602 features Shutdown, Power-Good Monitor, Output Short Circuit Protection and Overtemperature Protection.

The device requires only minimum components to implement a complete Step-Down DC/DC Circuit. The MCP1602 is designed to operate in PFM (Pulse Frequency Modulation) and PWM (Pulse Width Modulation) modes with various load conditions that is ideal for battery-powered portable applications.

The MCP1602 Evaluation Board provides five regulated output voltages for evaluation. Available output voltages are: 0.8V, 1.2V, 1.8V, 2.5V and 3.3V.

Typica l applications for the MCP1602 device are: PDAs, Portable Computer s, Portable Media Players, USB-Powered Systems, Digital Cameras, Handheld Medi cal Instruments, Ultra-Mobile PCs and Portable Communicators.

MCP1602 EVALUATION BOARD

USER ’S GUIDE

2.2 FEATURES

The MCP1602 Evaluation Board has the following features:

• Adjustable Output Voltages: 0.8V, 1.2V, 1.8V, 2.5V and 3.3V

• Input Voltage Range: 2.7V to 5.5V

• Shutdown Test Point

• Power-Good Test Point

• Easy V

•L

setup with Slide Style Dip Switch

OUT

Test Point for switching behavior observation.

MCP1602 Evaluation Board User’s Guide

2.3 GETTING STARTED

The MCP1602 Evaluation Board is fully assembled and tested for generating a regulated 0.8V, 1.2V, 1.8V, 2.5V and 3.3V output voltage from the MCP1602 device with a 2.7V to 5.5V input voltage source for V

2.3.1 Power Input and Output Connection

2.3.1.1 POWERING THE MCP1602 EVALUATION BOARD

> V

OUT

1. Connect the negative terminal of the DC power supply to P

2. Connect the positive terminal of the DC power supply to V

3. Connect the positive terminal of the multimeter to V to P

. The multimeter should display a regulated output voltage.

GND

and the negative terminal

OUT

GND

4. Adjust the DIP Switch to the desired value and the multimeter should read the desired output voltage. Refer to Table 2-1 for the voltage regulation.

Note: The number labels on the DIP SWITCH may have slightly different way to

demonstrate the mark, but will not affect the performance of the board.

5. The SHDN Board. To enter the shutdown mode, drive the SHDN

6. The L variable load that is connected to V

pin defaults to the enabled position on the MCP1602 Evaluation

pin low.

pin is available to observe the switching waveforms. By adjusting a

, the transitions between PFM/PWM can

OUT

be easily observed.

7. The PG pin is available to monitor the Power-Good signal.

Installation and Operation

OFF

FIGURE 2-1: Board Top Assembly.

TABLE 2-1: OUTPUT VOLTAGE REGULATION DIP POSITION

Voltage (V)1234

0.8V OFF OFF OFF OFF

1.2V ON OFF OFF OFF

1.8V OFF ON OFF OFF

2.5V OFF OFF ON OFF

3.3V OFF OFF OFF ON

MCP1602 Evaluation Board User’s Guide

NOTES:

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematics and layouts for the MCP1602 Evaluation Board:

• Board – Schematic Sheet

• Board – Top Layer

• Board – Top Metal Layer

• Board – Bottom Layer

MCP1602 EVALUATION BOARD

USER ’S GUIDE

MCP1602 Evaluation Board User’s Guide

A.2 BOARD – SCHEMATIC

A.3 BOARD – TOP LAYER

OFF

Schematic and Layouts

MCP1602 Evaluation Board User’s Guide

A.4 BOARD – TOP METAL LAYER

A.5 BOARD – BOTTOM LAYER

Schematic and Layouts

MCP1602 Evaluation Board User’s Guide

NOTES:

MCP1602 EVALUATION BOARD

USER ’S GUIDE

Appendix B. Bill Of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM)

Qty Reference Description Manufacturer Part Number

2 C1, C2 CAP CERAMIC 4.7 μF 16V X5R 0805 Panasonic® - ECG ECJ-2FB1C475K 1 C3 CAP CERAMIC 33 pF 25V NP0 0201 Panasonic - ECG ECJ-ZEC1E330J 1 C4 CAP CERAMIC .1 μF 16V X7R 0603 Panasonic - ECG ECJ-1VB1C104K 1 R1 RES 4.99K OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF4991V 1 R2 RES 200K OHM 1/10W 5% 0603 SMD Panasonic - ECG ERJ-3GEYJ204V 1 R3 RES 1.00M OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1004V 1 R4 RES 10.0 OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF10R0V 1 R5 RES 63.4K OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF6342V 1 R6 RES 10.0K OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1002V 1 R7 RES 93.1K OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF9312V 1 R8 RES 160K OHM 1/10W 5% 0603 SMD Panasonic - ECG ERJ-3GEYJ164V 1 R9 RES 402K OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF4023V 1 S1 SWITCH DIP SPST SEALED 4POS

SMD

1 L1 INDUCTOR POWER SHIELD 4.7μH

SMD

8 TP1, TP2, TP3,

TP4, TP5, TP6, TP7, TP8

1 U1 500 mA PFM/PWM Synchronous Buck

1 --- Printed Circu it Board — 104-00120-R1

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.

PC Test Point Compact SMT Keystone Electronics

Regulator

Copal Electronics Inc SD04H1SB

Coiltronics SD18-4R7-R

5016

Microchip Technology, Inc MCP1602-ADJI/MF

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10/05/07

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Microchip: MCP1602EV

Microchip Technology MCP1602 User 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 MCP1602 EVALUATION BOARD?

1.3 WHAT THE MCP1602 EVALUATION BOARD KIT INCLUDES

Chapter 2. Installation and Operation

2.1 INTRODUCTION

2.2 FEATURES

2.3 GETTING STARTED

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

Appendix B. Bill Of Materials (BOM)

WORLDWIDE SALES AND SERVICE