Microchip Technology MCP1603 Bedienungsanleitung

MCP1603

Buck Converter

Evaluation Board

User’s Guide

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MCP1603 BUCK CONVERTER

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 ....................................................................................... 5

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

1.2 What is the MCP1603 Buck Converter Evaluation Board? ............................ 6

1.3 What the MCP1603 Buck Converter Evaluation Board Kit includes .............. 6

Chapter 2. Installation and Operation ......................................................................... 7

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

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

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

Appendix A. Schematic and Layouts ........................................................................... 9

A.1 Introduction .................................................................................................... 9

A.2 Board - Schematic ....................................................................................... 10

A.3 Board - Top Silk Layer ................................................................................. 11

A.4 Board - Top Metal Layer .............................................................................. 12

A.5 Board - Bottom Metal Layer ......................................................................... 13

Appendix B. Bill Of Materials (BOM) .......................................................................... 15

Worldwide Sales and Service .................................................................................... 16

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MCP1603 Buck Converter Evaluation Board User’s Guide

NOTES:

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MCP1603 BUCK CONVERTER

EVALUATION BOARD USER’S GUIDE

Preface

INTRODUCTION

This chapter contains general information that will be useful to know before using the

MCP1603 Buck Converter 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 MCP1603 Buck Converter Evaluation Board

as a development tool to evaluate the MCP1603. The manual layout is as follows:

•Chapter 1. “Product Overview” – Important information about the MCP1603

Buck Converter 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 MCP1603 Buck Converter Evaluation Board.

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

MCP1603 Buck Converter Evaluation Board.

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®IDE on-line help.

Select the Help menu, and then Topics to open a list of available on-line help files.

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MCP1603 Buck Converter Evaluation Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

RECOMMENDED READING

This user's guide describes how to use MCP1603 Buck Converter Evaluation Board.

Other useful documents are listed below. The following Microchip documents are avail-

able and recommended as supplemental reference resources.

MCP1603 Data Sheet, "2.0 MHz, 500 mA Synchronous Buck Regulator"

(DS22042)

This data sheet provides detailed information regarding the MCP1603 Buck Regulator

product.

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

“Save project before build”

Underlined, italic text with

right angle bracket

A menu path File>Save

Bold characters A dialog button Click OK

A tab Click the Power tab

N‘Rnnnn A number in verilog format,

where N is the total number of

digits, R is the radix and n is a

digit.

4‘b0010, 2‘hF1

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

Courier New font:

Plain Courier New Sample source code #define START

Filenames autoexec.bat

File paths c:\mcc18\h

Keywords _asm, _endasm, static

Command-line options -Opa+, -Opa-

Bit values 0, 1

Constants 0xFF, ‘A’

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

any valid filename

Square brackets [ ] Optional arguments mcc18 [options] file

[options]

Curly brackets and pipe

character: { | }

Choice of mutually exclusive

arguments; an OR selection

errorlevel {0|1}

Ellipses... Replaces repeated text var_name [,

var_name...]

Represents code supplied by

user

void main (void)

{ ...

}

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Preface

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

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 (May 2007)

• Initial Release of this Document.

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MCP1603 Buck Converter Evaluation Board User’s Guide

NOTES:

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MCP1603 BUCK CONVERTER

EVALUATION BOARD USER’S GUIDE

Chapter 1. Product Overview

1.1 INTRODUCTION

Step-down converter choices include a variety of linear and switching regulators. The

MCP1603 500 mA synchronous buck regulator provides a low profile, cost effective,

and efficient solution for devices like cellular telephones, USB-powered devices and

hand held instruments. The device provides a solution with minimal board space

because of the high-frequency operation, which reduces the size requirements of the

external inductor and capacitor and the 1 mm maximum height TSOT package.

The MCP1603 switches at a fixed frequency of 2.0 MHz when operating at a heavy

load. This provides a low-noise, small size solution. When operating at light loads, the

MCP1603 changes operation to a pulse frequency modulation (PFM) mode to minimize

quiescent current drawn from the input source. No intervention is necessary for smooth

transition from one mode to another.

This chapter covers the following topics.

• "What is the MCP1603 Buck Converter Evaluation Board?”

• "What the MCP1603 Buck Converter Evaluation Board Kit includes.”

FIGURE 1-1: MCP1603 Buck Converter Evaluation Board Block Diagram.

Input MCP1603 VOUT

VOUT

2.7V - 5.5V

Voltage Buck

Regulator

Setting

Switches

500 mA

(maximum)

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MCP1603 Buck Converter Evaluation Board User’s Guide

1.2 WHAT IS THE MCP1603 BUCK CONVERTER EVALUATION BOARD?

The MCP1603 Buck Converter Evaluation Board demonstrates the use of Microchip’s

MCP1603 device in a step-down application. The evaluation board is a fully functional

platform to evaluate the MCP1603 buck regulator over the input voltage, output voltage

and current range of the device.

Test points are provided to allow easy connection of the input voltage source and the

output load.

1.3 WHAT THE MCP1603 BUCK CONVERTER EVALUATION BOARD KIT

INCLUDES

This MCP1603 Buck Converter Evaluation Board kit includes:

• MCP1603 Buck Converter Evaluation Board (102-00133)

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

- MCP1603 Buck Converter Evaluation Board User’s Guide (DS51652)

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