Texas Instruments Bq2060AEVM-001 Manuale utente

bq2060AEVM-001 and

bq2060AEVM-002

SBS 1.1 Battery Management Solution

Evaluation Module

December 2003 High Performance Analog

User’s Guide

SLUU179

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,

enhancements, improvements, and other changes to its products and services at any time and to discontinue

any product or service without notice. Customers should obtain the latest relevant information before placing

orders and should verify that such information is current and complete. All products are sold subject to TI’s terms

and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI

deems necessary to support this warranty. Except where mandated by government requirements, testing of all

parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for

their products and applications using TI components. To minimize the risks associated with customer products

and applications, customers should provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,

in which TI products or services are used. Information published by TI regarding third−party products or services

does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.

Use of such information may require a license from a third party under the patents or other intellectual property

of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without

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of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for

such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that

product or service voids all express and any implied warranties for the associated TI product or service and

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Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

EVM IMPORTANT NOTICE

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:

This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION

PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided

may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective

considerations, including product safety measures typically found in the end product incorporating the goods.

As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic

compatibility and therefore may not meet the technical requirements of the directive.

Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned

within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE

WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,

IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY

PARTICULAR PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user

indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products

received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction

of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic

discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE

TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not

exclusive.

TI assumes no liability for applications assistance, customer product design, software performance, or

infringement of patents or services described herein.

Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM

User’s Guide prior to handling the product. This notice contains important safety information about temperatures

and voltages. For further safety concerns, please contact the TI application engineer.

Persons handling the product must have electronics training and observe good laboratory practice standards.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any

machine, process, or combination in which such TI products or services might be or are used.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the input voltage range of 3 V and 25 V, with a

maximum voltage drop across the sense resistor of 250 mV (1−W power dissipation).

Exceeding the specified input range may cause unexpected operation and/or irreversible

damage to the EVM. If there are questions concerning the input range, please contact a TI

field representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or

possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to

connecting any load to the EVM output. If there is uncertainty as to the load specification,

please contact a TI field representative.

During normal operation, some circuit components may have case temperatures greater than

60°C. The EVM is designed to operate properly with certain components above 60°C as long

as the input and output ranges are maintained. These components include but are not limited

to linear regulators, switching transistors, pass transistors, and current sense resistors. These

types of devices can be identified using the EVM schematic located in the EVM User’s Guide.

When placing measurement probes near these devices during operation, please be aware

that these devices may be very warm to the touch.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

How to Use This Manual

Preface

Read This First

About This Manual

This user’s guide describes the characteristics and operation of the

bq2060AEVM-001 and bq2060AEVM-002 evaluation module. The EVM is

used to evaluate the bq2060A battery management system. A complete circuit

description, operating procedures, and bill of materials are included. The EVM

schematic is appended to the user’s guide PDF.

How to Use This Manual

This document contains the following chapters:

-Chapter 1—Introduction

-Chapter 2—bq2060A-Based Circuit Module

-Chapter 3—Circuit Module Physical Layout

-Chapter 4—EVM Hardware and Software Setup

-Chapter 5—Operation

FCC Warning

This equipment is intended for use in a laboratory test environment only. It gen-

erates, uses, and can radiate radio frequency energy and has not been tested

for compliance with the limits of computing devices pursuant to subpart J of

part 15 of FCC rules, which are designed to provide reasonable protection

against radio frequency interference. Operation of this equipment in other en-

vironments may cause interference with radio communications, in which case

the user at his own expense will be required to take whatever measures may

be required to correct this interference.

Contents

vii

Contents

1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Overview 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Kit Contents 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Ordering Information 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 bq2060A-Based Circuit Module 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Pin Descriptions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 bq2060A Cirduit Module Bill of Materials 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 bq2060A Cirduit Module Performance Specification Summary 2-3. . . . . . . . . . . . . . . . . . . .

3 Circuit Module Physical Layouts 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Board Layout 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 EVM Hardware and Software Setup 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Software Installation 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Hardware Connection 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2.1 Connecting the bq2060A Circuit Module to a Battery Pack 4-2. . . . . . . . . . . . . . . .

4.2.2 PC Interface Connection 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Operation 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 Starting the Program 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Extended Data Screen 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3 Data Logging 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.4 Setting Programmable bq2060A Options 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.5 Calibration of a bq2060A Based Module Using the EV2200-60 Software 5-10. . . . . . . . . .

5.6 Direct Access Communication 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.7 Schematic Appended to the PDF document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

viii

Figures

3−1 bq2060AEVM-00X Layout 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−1 bq2060A Circuit Module Connection to LION Cells and System Load/Charger 4-3. . . . . . . .

4−2 bq2060A Circuit Module Connection to NiMH Cells and System Load/Charger 4-4. . . . . . . .

5−1 SBS Data Screen 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−2 SBS Data Screen—Static Data Window 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−3 SBS Extended Data Screen 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−4 LION EEPROM Data Screen 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−5 NiMH EEPROM Data Screen 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−6 Read EEPROM Values Screen 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−7 EEPROM Values to be Written Screen 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−8 EEPROM Data Screen—bq2060A Module Calibration Locations 5-9. . . . . . . . . . . . . . . . . . . .

5−9 VFC Offset Screen 5-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−10 3 Cell LION Calibration Screen 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5−11 Pro Screen 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tables

1−1 Ordering Information 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−1 SLUP023-00X Bill of Materials 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−2 Performance Specification Summary 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−1 Circuit Module to EV2200 Connections 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−2 Circuit Module EEPROM Connector to EV2200 Connections 4-4. . . . . . . . . . . . . . . . . . . . . . .

5−1 Example Log File 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Introduction

This EVM is a complete evaluation system for the bq2060A battery

management system. The bq2060A is backwards compatible with the

bq2060. New features in the bq2060A can be accessed from the EEPROM

screen in the EV2200-60 software.

For this document bq2060AEVM-00X is used for both the bq2060AEVM-001

and the bq2060AEVM-002.

Topic Page

1.1 Overview 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Kit Contents 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Ordering Information 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

Overview

1-2

1.1 Overview

The EVM includes one bq2060A circuit module, a current sense resistor, a

thermistor, an EV2200 PC interface board for gas gauge interface, a PC serial

cable, and an EEPROM connector. The latest windows based EV2200-60 PC

software can be downloaded from the TI web site. The circuit module includes

one bq2060A IC and all other onboard components necessary to monitor and

predict capacity of Li-Ion or Li-Polymer (bq2060AEVM-001) or NiMH

(bq2060AEVM-002) cells. Protection for Li-Ion or Li-Polymer cells is not in-

cluded on this module. The circuit module connects directly across the cells

in a battery. With the EV2200 interface board and software, the user can read

the bq2060A data registers, program the chipset for different pack configura-

tions, log cycling data for further evaluation and evaluate the overall functional-

ity of the bq2060A solution under different charge and discharge conditions.

1.2 Features

-Complete evaluation system for the bq2060A SBS 1.1 compliant

advanced gas gauge

-Populated circuit module for quick setup

-PC software and interface board for easy evaluation

-Software that allows data-logging for system analysis

1.3 Kit Contents

-bq2060A circuit module

-EEPROM Interface connector with wires

-Sense resistor

-EV2200 PC interface board

-PC serial cable

-Set of support documentation

-Set of evaluation software disks entitled EV2200-60

To download the latest EVM software:

1) Go to www.ti.com

2) Search for bq2060A, and open the product folder.

3) Click on | Development Tools |

4) Click the appropriate EVM (LION−001 or NiMH–002) and download the

EV2200-60 software under the Contents section.

5) You will find software and hardware setup guidelines in Chapter 5 of this

document.

1.4 Ordering Information

Table 1−1.Ordering Information

EVM Part Number Chemistry Configuration Capacity

bq2060AEVM−001 Li-Ion 3 or 4 cell 800 mAH to

32000 mAH

bq2060AEVM−002 NIMH 10 cell 800 mAH to

32000 mAH

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