Microchip Technology MCP7382X User Manual

© 2006 Microchip Technology Inc. DS51267B

MCP7382X

Evaluation Kit

User’s Guide

DS51267B-page ii © 2006 Microchip Technology Inc.

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MCP7382X EVALUATION KIT

USER’S GUIDE

© 2006 Microchip Technology Inc. DS51267B-page iii

Table of Contents

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

Chapter 1. Product Overview ....................................................................................... 5

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

1.2 What the MCP7382X Evaluation Kit Is ........................................................... 5

1.3 MCP7382X Evaluation Kit Components ......................................................... 5

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

2.1 Description ..................................................................................................... 7

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

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

2.4 Detailed Description ....................................................................................... 9

Appendix A. Schematic and Board Layouts.............................................................. 11

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

A.2 Highlights ..................................................................................................... 11

A.3 Board Schematic ........................................................................................ 12

A.4 Board Layout - Top Assembly .................................................................... 13

A.5 Board Layout - Top Layer .......................................................................... 14

A.6 Board Layout - Bottom Layer ..................................................................... 15

Appendix B. Bill Of Materials (BOM) .......................................................................... 17

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

MCP7382X Evaluation Kit User’s Guide

DS51267B-page iv © 2006 Microchip Technology Inc.

NOTES:

MCP7382X EVALUATION KIT

USER’S GUIDE

© 2006 Microchip Technology Inc. DS51267B-page 1

Preface

INTRODUCTION

This chapter contains general information that will be useful to know before using the
MCP7382X Evaluation Kit. 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 MCP7382X Evaluation Kit as a development
tool. The manual layout is as follows:

• Chapter 1. “Product Overview” – Important information on how to use the
MCP7382X Evaluation Board.

• Chapter 2. “Installation and Operation” – For users evaluating the MCP73826,
MCP73827, or MCP73828 devices, this chapter describes how to use the various
features of the hardware.

• Appendix A. “Schematic and Board Layouts” – shows the schematic and lay­out diagrams for the MCP7382X Evaluation Kit.

• Appendix B. “Bill Of Materials (BOM)” – lists the parts used to build the
MCP7382X Evaluation Kit.

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.

MCP7382X Evaluation Kit User’s Guide

DS51267B-page 2 © 2006 Microchip Technology Inc.

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

RECOMMENDED READING

This user's guide describes how to use MCP7382X Evaluation Kit. For more
information regarding the MCP7382X devices, the following are recommended
reading.

MCP7382X Data Sheets

These data sheets provide detailed information regarding the MCP7382X Single Cell
Lithium-Ion Charge Management Controllers:

• MCP73826 Data Sheet (DS21705)

• MCP73827 Data Sheet (DS21704)

• MCP73828 Data Sheet (DS21706)

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}

Preface

© 2006 Microchip Technology Inc. DS51267B-page 3

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

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CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

• Development Systems Information Line

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 B (July 2006)

• Add disclaimer to Bill of Materials regarding RoHS-Compliant part numbers.

Revision A (January 2002)

• Initial Release of this Document.

MCP7382X Evaluation Kit User’s Guide

DS51267B-page 4 © 2006 Microchip Technology Inc.

NOTES:

MCP7382X EVALUATION KIT

USER’S GUIDE

© 2006 Microchip Technology Inc. DS51267B-page 5

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the MCP7382X Evaluation Kit, and instructions
on how to connect the system components.

This chapter covers the following topics:

• What the MCP7382X Evaluation Kit Is

• MCP7382X Evaluation Kit Components

1.2 WHAT THE MCP7382X EVALUATION KIT IS

The MCP7382X Evaluation Kit is an evaluation and demonstration tool for Microchip
Technology’s MCP7382X Single Cell Lithium-Ion Charge Management Controllers.
The design provides for dynamic versatility while being able to handle accurate
measurements.

When connected, this evaluation board allows for the evaluation of the MCP7382X
devices in a variety of applications.

1.3 MCP7382X EVALUATION KIT COMPONENTS

The MCP7382X Evaluation Kit contains:

• MCP7382X Evaluation Board (102-00017)

• MCP73826-4.2VCH, MCP73827-4.2VUA, and MCP73828-4.2VUA Devices
installed

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

- MCP7382X Evaluation Kit User’s Guide

MCP7382X Evaluation Kit User’s Guide

DS51267B-page 6 © 2006 Microchip Technology Inc.

NOTES:

MCP7382X EVALUATION KIT

USER’S GUIDE

© 2006 Microchip Technology Inc. DS51267B-page 7

Chapter 2. Installation and Operation

2.1 DESCRIPTION

The MCP7382X Evaluation Kit is an evaluation kit designed to support Microchip’s
MCP73826, MCP73827, and MCP73828 single-cell Li-Ion charge management
devices. The evaluation kit is fully assembled and tested. The kit is useful for evaluating
simple stand-alone operation or for evaluating applications interfaced with a
microcontroller.

2.2 FEATURES

The MCP7382X Evaluation Board has the following features:

• Evaluation of MCP73827/28 in 8-pin MSOP packages

• Evaluation of MCP73826 in 6-pin SOT-23 package

• Simple Stand-Alone Operation or Microcontroller Compatible

• Powered from external bench supply or voltage regulated wall cube

• Surface-Mount Design

• Fully Assembled and Tested

MCP7382X Evaluation Kit User’s Guide

DS51267B-page 8 © 2006 Microchip Technology Inc.

2.3 GETTING STARTED

The MCP7382X Evaluation Board is a fully functional, assembled, and tested surface
mount board for evaluation of Microchip’s MCP73826/27/28 single-cell Li-Ion battery
charger devices. The following steps provide simple stand-alone operation. Refer to
the set-up configuration diagram below. Note: Do not turn on the input power until all
other set-up steps are complete.

1. Place a jumper on JP4 to select the appropriate device for evaluation.

2. Place a jumper on JP5 to enable the appropriate device for evaluation.

3. Connect an external bench supply or voltage regulated wall cube to JP1.

Observe correct polarity of connection.

4. Connect a single cell Li-Ion battery pack to JP2. Observe correct polarity of

connection.

5. For MCP73828 evaluation, connect external battery pack thermistor to JP3.

6. Turn-on bench supply or plug-in wall cube.

7. For MCP73827 evaluation, LED D3 shall be turned off when the charge cycle
transitions from controlled current mode to constant voltage mode charge.

8. For MCP73828 evaluation, LED D2 shall illuminate when the battery pack is at
full charge.

FIGURE 2-1: Set-Up Configuration Diagram

TEMP

PACK+

PACK-

+

-

BATTERY

PACK

Optional Thermistor
Connection for
MCP73828 Evaluation

VOLTAGE
REGULATED
WALL CUBE

Installation and Operation

© 2006 Microchip Technology Inc. DS51267B-page 9

2.4 DETAILED DESCRIPTION

The MCP7382X Evaluation Board is set-up to evaluate simple, stand-alone, linear
charging of single cell Li-Ion battery packs. Each of the three Li-Ion battery chargers
can be evaluated independently. The chargers provide controlled current charging fol­lowed by constant voltage charging. The MCP73826, U1, is provided in a 6-pin SOT23
package and is equipped with shutdown control. The MCP73827, U2, is provided in an
8-pin MSOP package. In addition to shutdown control, the MCP73827 signals when the
charge cycle transitions from controlled current mode to constant voltage mode. An
LED, D3, is illuminated during the controlled current mode. A voltage representation of
the charge current, I

MON

, is provided for a host microcontroller to monitor the charge
profile. The MCP73828, U3, is also provided in an 8-pin MSOP package. In addition to
shutdown control, the MCP73828 signals when the charge current has diminished
below ten percent of the peak charge current. An LED, D2, is illuminated indicating full
charge. A thermistor input is provided to inhibit charging when the cell temperature is
outside a pre-defined window. Refer to the appropriate data sheets for details on the
individual device features.

2.4.1 Input Source

The MCP7382X Evaluation Board is designed to provide an output current of 1A, typi­cal. A 5V ±10%, 6W input source should be utilized to power the evaluation kit. JP1
terminal 1 is the positive input source connection. JP1 terminal 2 is the negative input
source connection.

Higher or lower output currents can be obtained by adjusting the value of the sense
resistor, R1. A corresponding higher or lower power input source may need to be uti­lized. Care should be taken not to over stress the pass transistor, Q1, with excessive
power dissipation when higher output currents are desired.

2.4.2 Reverse Blocking Protection

The MCP7382X Evaluation Board is designed to provide reverse blocking protection in
the event a reversed polarity input source is connected to JP1. The reverse blocking
protection diode, D1, also ensures that a faulted or shorted input source will not
adversely effect the battery pack.

2.4.3 Battery Headers

Two headers, JP2 and JP3 are used to connect to an external Li-Ion battery pack and
optional protection thermistor. JP2 terminal 1 is the battery pack positive connection,
JP2 terminal 2 is the negative battery pack connection. JP3 terminal 1 is for connection
to a 10 k ohm NTC thermistor situated in the battery pack for temperature sensing. JP3
terminal 2 is the negative reference for the thermistor.

Note: Improper connection of the battery may result in damage to the

battery and the possibility of personal injury. It is also important to
avoid shorting the battery terminals together.

MCP7382X Evaluation Kit User’s Guide

DS51267B-page 10 © 2006 Microchip Technology Inc.

2.4.4 Device Support Options

The MCP7382X Evaluation Board provides evaluation of three Li-Ion battery chargers:
MCP73826, MCP73827, or MCP73828. Device selection is performed by placing
shunts on JP4 and JP5 as indicated in the table below. JP4 determines which device
is controlling the pass transistor. JP5 is used to enable the appropriate device.

TABLE 2-1: SHUNT JUMPERS

2.4.5 Microcontroller Option

JP6 provides an easily accessible location for interface to a host microcontroller. The
host microcontroller can be used to disable the charger, monitor charge status, monitor
the charge profile, or terminate a charge.

A proto-typing area is provided for generation of a self-contained microcontroller solu­tion.

2.4.6 Output Voltage Options

The MCP7382X Evaluation Board is provided with a constant voltage mode output
voltage of 4.2V. Evaluation with a constant voltage mode output voltage of 4.1V can be
achieved by replacing U1, U2, or U3 with the appropriate device. Refer to the
appropriate data sheets for device ordering information.

FIGURE 2-2: Jumper Locations on the MCP7382X Evaluation Board.

Device Type JP4 Shunt Location JP5 Shunt Location

MCP73826 5, 6 1, 2

MCP73827 3, 4 3, 4

MCP73828 1, 2 5, 6

JP4

Short across for MCP73828
Short across for MCP73827
Short across for MCP73826

JP5

Short across for MCP73826
Short across for MCP73827
Short across for MCP73828

MCP7382X EVALUATION KIT

USER’S GUIDE

© 2006 Microchip Technology Inc. DS51267B-page 11

Appendix A. Schematic and Board Layouts

A.1 INTRODUCTION

This appendix contains the schematic and board layouts for the MCP7382X Evaluation
Kit.

A.2 HIGHLIGHTS

Diagrams included in this appendix:

• Board Schematic

• Board Layout - Top Assembly

• Board Layout - Top Layer

• Board Layout - Bottom Layer

MCP7382X Evaluation Kit User’s Guide

DS51267B-page 12 © 2006 Microchip Technology Inc.

A.3 BOARD SCHEMATIC

C1

0.1uF

+

C2

10uF

+

C3

10uF

1

2

JP1

1

2

JP2

1

2

JP3

R1

50milliohm

Q1

NDS8434

D1

MA2Q705

12
34
56

JP4

12
34
56

JP5

R2

22.1k

R3

100k

R4

100k

R5

100k

R7

DNP

R8

0

VDRV4VBAT

3

SHDN1VSS

2

VSNS

6

VIN

5

U1

MCP73826

VDRV6VBAT

5

SHDN1IMON

4

VSS2MODE

3

VSNS

7

VIN

8

U2

MCP73827

VDRV6VBAT

5

SHDN1CD10

4

VSS2THERM

3

VSNS

7

VIN

8

U3

MCP73828

C4

0.1uF

R6

100k

R9

332

R10

332

VIN

VSNS

VOUT*

SHDN

MODE

THERM

CD10

VDRV

123456789

10

JP6

IMON

VIN

VSNS

VDRV

VOUT

SHDN

MODE

IMON

THERM

CD10

VSUPPLY

D2

CD10

D3

MODE

R11

274k

VIN

* VOUT is directly connected to the VBAT pin of the DUT

Schematic and Board Layouts

© 2006 Microchip Technology Inc. DS51267B-page 13

A.4 BOARD LAYOUT - TOP ASSEMBLY

Note: The V

OUT

connected on JP6 is directly connected to the V

BAT

pin of the DUT

MCP7382X Evaluation Kit User’s Guide

DS51267B-page 14 © 2006 Microchip Technology Inc.

A.5 BOARD LAYOUT - TOP LAYER

Schematic and Board Layouts

© 2006 Microchip Technology Inc. DS51267B-page 15

A.6 BOARD LAYOUT - BOTTOM LAYER

MCP7382X Evaluation Kit User’s Guide

DS51267B-page 16 © 2006 Microchip Technology Inc.

NOTES:

MCP7382X EVALUATION KIT

USER’S GUIDE

© 2006 Microchip Technology Inc. DS51267B-page 17

Appendix B. Bill Of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM)

Qty

Reference

Description Manufacturer Part Number

2 C1, C4 0.1 µF, 25V, Y5U Ceramic, 0805 Panasonic ECJ-2VF1E104Z

2 C2, C3 10 µF, 25V, Tantalum, SMC, Input/Output Panasonic ECS-T1EC106R

1 D1 1.5 A Shottky Diode, Reverse Protection Panasonic MA2Q705

2 D2, D3 Red LED, Surface Mount Lumex SML-LX2832GC

3 JP1, JP2,

JP3

Screw Header Weidmuller 171602

1 JP4, JP5 Dual In-Line Header, “0.100, 3x2 Position Sullins PTC36DAAN

(1)

1 JP6 Single In-Line Header, “0.100, 10x1 Position Sullins PTC36SYAN

(2)

1 Q1 P-channel MOSFET, SOIC8 Fairchild NDS8434

1 R1 50 milliohm sense resistor Panasonic ERJ-L1WKF50MU

1 R2 22.1 kohm, 1/10W, 1%, Thick Film Chip, 0805 Panasonic ERJ-6ENF2212V

4 R3, R4, R5, R622.1 kohm, 1/10W, 1%, Thick Film Chip, 0805 Panasonic ERJ-6ENF2212V

0 R7 Not populated, 0805

1 R8 0.0 ohm Jumper, 0805 Phycomp 9C08052A0R00JLH

2 R9, R10 332 ohm, 1/10W, 1%, Thick Film Chip, 0805 Panasonic ERJ-6ENF3320V

1 R11 274 kohm, 1/10W, 1%, Thick Film Chip, 0805 Panasonic ERJ-6ENF2743V

1 U1 Lithium-Ion Battery Charger, SOT23-6 Microchip MCP73826-4.2VCH

1 U2 Lithium-Ion Battery Charger, MSOP8 Microchip MCP73827-4.2VUA

1 U3 Lithium-Ion Battery Charger, MSOP8 Microchip MCP73828-4.2VUA

2 — Header Shunts Sullins STC02STAN

4 — Bumpons - Protective Products 3M SJ5003-0

Note 1: JP4, JP5 are ordered as a 36x2 strip header. Cut to fit. One for every 5 boards built.

2: JP6 is ordered as a 36x1 strip header. Cut to fit. One for every 3 boards built.
3: 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.

DS51267B-page 18 © 2006 Microchip Technology Inc.

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 Оперативные сроки поставки под заказ (от 5 рабочих дней);
 Экспресс доставка в любую точку России;
 Техническая поддержка проекта, помощь в подборе аналогов, поставка прототипов;
 Система менеджмента качества сертифицирована по Международному стандарту ISO

9001;

 Лицензия ФСБ на осуществление работ с использованием сведений, составляющих

государственную тайну;

 Поставка специализированных компонентов (Xilinx, Altera, Analog Devices, Intersil,

Interpoint, Microsemi, Aeroflex, Peregrine, Syfer, Eurofarad, Texas Instrument, Miteq,
Cobham, E2V, MA-COM, Hittite, Mini-Circuits,General Dynamics и др.);

Помимо этого, одним из направлений компании «ЭлектроПласт» является направление

«Источники питания». Мы предлагаем Вам помощь Конструкторского отдела:

 Подбор оптимального решения, техническое обоснование при выборе компонента;
 Подбор аналогов;
 Консультации по применению компонента;
 Поставка образцов и прототипов;
 Техническая поддержка проекта;
 Защита от снятия компонента с производства.

Как с нами связаться

Телефон: [phone] (многоканальный)
Факс: [phone]
Электронная почта: [e-mail]

Адрес: 198099, г. Санкт-Петербург, ул. Калинина,

дом 2, корпус 4, литера А.