Microchip Technology MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design User guide

MCP1630V

Bidirectional 4 Cell

Li-Ion Charger Reference Design

User’s Guide

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

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code hopping devices, Serial EEPROMs,

MCP1630V BIDIRECTIONAL 4 CELL

LI-ION CHARGER REFERENCE

DESIGN 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 MCP1630V Bidirectional 4 Cell Li-Ion Charger

Reference Design? ................................................................................... 6

1.3 What the MCP1630V Bidirectional 4 Cell Li-Ion Charger

Reference Design kit includes .................................................................. 6

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

2.4 Introduction ..................................................................................................... 7

2.5 Features ......................................................................................................... 7

2.6 Getting Started ............................................................................................... 8

Appendix A. Schematics and Board Layouts............................................................ 11

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

A.2 Schematic - Sheet 1 ................................................................................... 12

A.3 Schematic - Sheet 2 ................................................................................... 13

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

A.5 Board – Top Metal Layer ............................................................................ 15

A.6 Board – Mid Layer1 .................................................................................... 16

A.7 Board – Mid Layer2 .................................................................................... 17

A.8 Board – Metal Layer ................................................................................... 18

A.9 Board – Bottom Silk Layer ......................................................................... 19

Appendix B. Bill Of Materials (BOM) .......................................................................... 21

Appendix C. Firmware ................................................................................................. 23

C.1 Device Firmware - Flowchart ....................................................................... 23

C.2 Device Firmware - Flowchart (Continued) ................................................... 24

Worldwide Sales and Service .................................................................................... 26

MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design User’s Guide

NOTES:

MCP1630V BIDIRECTIONAL 4 CELL

LI-ION CHARGER REFERENCE

DESIGN 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 MCP1630V Bidirectional 4 Cell Li-Ion Charger 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 MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design as a development tool to emulate and debug firmware on a target board. The manual layout is as follows:

• Chapter 1. “Product Overview”– Important information about the MCP1630V

Bidirectional 4 Cell Li-Ion Charger Reference Design.

• 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. “Schematics and Board Layouts” – Shows the schematic and

layout diagrams for the MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design.

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

MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design.

• Appendix C. “Firmware” – Provides information about the application firmware

and where the source code can be found.

MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design 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

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’

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options]

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. 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

Preface

DOCUMENT REVISION HISTORY

Revision A (November 2006)

• Initial Release of this Document.

MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design User’s Guide

NOTES:

Chapter 1. Product Overview

1.1 INTRODUCTION

As high power portable applications continue to gain in popularity, more innovative techniques are needed to charge the batteries while also providing a low regulated voltage to the system’s high end digital electronics. For example, laptop computers, portable test equipment, portable printers, etc., all require more power than a single or two cell Li-Ion battery pack can efficiently store. As a result, three or four series Li-Ion cell packs are used to store the necessary that power these high end applications. The result is a high dc voltage used to store the energy requiring a difficult high voltage to low voltage dc-dc conversion. The MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design can be used to evaluate a design that boosts a low source voltage to charge four Li-Ion series cells while providing energy to the system simultaneously. When the source is removed, the same power train used to charge the battery pack provides a low regulated voltage to operate the system.

This chapter covers the following topics.

• What is the MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design?

• What the MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design Kit includes.

MCP1630V BIDIRECTIONAL 4 CELL

LI-ION CHARGER REFERENCE

DESIGN USER’S GUIDE

Wide Range ac Input (85 Vrms to 240 Vrms)

Low Voltage

dc Output (+7.0V)

AC/DC

Converter

FIGURE 1-1: MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design shown in Laptop Computer system level block diagram.

DC/DC

Converter

+3.3V

+1.XV

DC/DC

Converter

4 Cell Li-Ion

Battery Pack

dc-Bus

MCP1630V

Bidirectional

Charger and

DC/DC Converter

+ 21 hidden pages

Microchip Technology MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design User guide

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