Texas Instruments Bq27 10EVM Series Bedienungsanleitung

User's Guide

SLUU259A–October 2006–Revised October 2013

bq27x10EVM Single-Cell Battery Fuel Gauge

Evaluation Module

The bq27x10EVM is a complete evaluation system for the bq27x10 single-cell Li-ion and Li-polymer

battery gas gauge device.

Contents

1 Introduction .................................................................................................................. 2

2 bq27x10-Based Circuit Module ........................................................................................... 3

3 bq27x10EVM Circuit Module Schematic ................................................................................. 4

4 bq27x10EVM Circuit Module Physical Layouts ......................................................................... 5

5 bq27x10EVM Circuit Module List of Materials .......................................................................... 9

6 bq27x10EVM Circuit Module Performance Specification Summary ................................................. 9

7 EVM Hardware and Software Setup .................................................................................... 10

8 Operation ................................................................................................................... 11

List of Figures

1 bq27x10EVM Schematic................................................................................................... 4

2 bq27x10EVM Topside Assembly ......................................................................................... 5

3 bq27x10EVM Silkscreen................................................................................................... 5

4 bq27x10EVM Layer 1 Layout ............................................................................................. 6

5 bq27x10EVM Layer 2 Layout ............................................................................................. 7

6 bq27x10EVM Layer 3 Layout ............................................................................................. 8

7 bq27x10EVM Layer 4 Layout ............................................................................................. 8

8 bq27x10EVM Circuit Module Connection to Cells and System Load/Charger.................................... 10

9 Initial Register Screen .................................................................................................... 11

10 EEPROM Screen.......................................................................................................... 12

11 Pro Screen ................................................................................................................. 14

12 Calibration Screen......................................................................................................... 15

List of Tables

1 Ordering Information........................................................................................................ 2

2 Test Points................................................................................................................... 3

3 List of Materials ............................................................................................................. 9

4 Performance Specification Summary..................................................................................... 9

5 Circuit Module-to-EV2300 Connection.................................................................................. 11

6 Example Data Log......................................................................................................... 16

Windows is a registered trademark of Microsoft Corporation.

SLUU259A–October 2006–Revised October 2013 bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module

Introduction

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1 Introduction

The bq27x10EVM includes one bq27x10EVM circuit module, CD ROM including Windows®-based PC

software and support documentation. An EV2300 board for gas gauge evaluation is required to interface

this EVM with the PC and can be purchased separately. The circuit module includes one bq27x10, a

current sense resistor, and all other components onboard necessary to calculate remaining battery

capacity and predict system run-time to empty. The circuit module connects directly across the cell in a

battery. With the PC interface board and software, the user can read the bq27x10 data registers, program

the on-chip configuration EEPROM, and evaluate the functions of the bq27x10 under different charge and

discharge conditions.

1.1 Features

• Complete evaluation system for the bq27x10 battery gas gauge

• Populated circuit module for quick setup

• PC software and interface board for easy evaluation

• Software allows EEPROM programming and data logging for system analysis

1.2 Kit Contents

1. bq27x10EVM circuit module with sense resistor

2. CD ROM including Windows-based PC software and support documentation

3. Set of support documentation

1.3 Ordering Information

Table 1. Ordering Information

EVM PART NUMBER PC INTERFACE BOARD CHEMISTRY PACK VOLTAGE CAPACITY

bq27x10EVM USB Li-Ion 2.6 v to 4.5 V 100 to 2000 mAh

2bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module SLUU259A–October 2006–Revised October 2013

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bq27x10-Based Circuit Module

2 bq27x10-Based Circuit Module

The bq27x10EVM-based circuit module is an example circuit for battery fuel gauging of a single-cell Li-

ion/Li-polymer battery pack. The EVM module has two separate circuits. One is the active bq27x10 fuel

gauging circuitry; the other is the logic and power control to program the on-chip configuration EEPROM

of the bq27x10. In a typical application, only the active fuel gauging circuitry is required. The EEPROM

programming circuitry would be required in a test setup to configure the bq27x10 for the application by

programming the EEPROM.

Contacts on the circuit module provide direct connection to the cell (J1-1, J2-2), and the serial

communications port (J1-3). The system load and charger connect across J1-1 and J2-1.

Table 2. Test Points

TEST POINT SIGNAL NAME DESCRIPTION

J1-1 PACK+ Cell positive/pack positive

J1-2 SCL Used only with bq27210 as the I2C Clock line

J1-3 SDA/HDQ Single-wire HDQ line for bq27010 or I2C Data line for

bq27210

J2-1 PACK– Pack negative

J2-2 BAT– Cell negative

J3-1 21V High voltage for EEPROM programming

J3-2 PROG Input for timing of EEPROM programming pulse

J3-3 GPIO/ADIN GPIO pin of bq27x10

SLUU259A–October 2006–Revised October 2013 bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module

bq27x10EVM Circuit Module Schematic

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3 bq27x10EVM Circuit Module Schematic

Figure 1. bq27x10EVM Schematic

4bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module SLUU259A–October 2006–Revised October 2013

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bq27x10EVM Circuit Module Physical Layouts

4 bq27x10EVM Circuit Module Physical Layouts

Figure 2 through Figure 7 show the PCB layers and assembly drawing for the bq27x10EVM circuit

module.

Figure 2. bq27x10EVM Topside Assembly

Figure 3. bq27x10EVM Silkscreen

SLUU259A–October 2006–Revised October 2013 bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module

bq27x10EVM Circuit Module Physical Layouts

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Figure 4. bq27x10EVM Layer 1 Layout

6bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module SLUU259A–October 2006–Revised October 2013

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bq27x10EVM Circuit Module Physical Layouts

Figure 5. bq27x10EVM Layer 2 Layout

SLUU259A–October 2006–Revised October 2013 bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module

bq27x10EVM Circuit Module Physical Layouts

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Figure 6. bq27x10EVM Layer 3 Layout

Figure 7. bq27x10EVM Layer 4 Layout

8bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module SLUU259A–October 2006–Revised October 2013

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bq27x10EVM Circuit Module List of Materials

5 bq27x10EVM Circuit Module List of Materials

Table 3 contains the list of materials required for the bq27x10EVM circuit module.

Table 3. List of Materials

REF DES 27010 27210 DESCRIPTION MFR PART NUMBER

QTY QTY

C1, C2, 5 5 Capacitor, ceramic, 0.1 μF, 10 V, X5R, 402 Murata GRM155R61A104KA01D

C3, C4,

D1, D3 2 2 Diode, Zener, 5.6 V, 350 mW, SOT23 Diodes, Inc. BZX84C5V6T

D2 1 1 Diode, Dual, Zener, 5.6 V, 300 mW, SOT23 Diodes, Inc. AZ23C5V6

Q1 1 1 MOSFET, N-channel, 2N7002, 60 V, 250 mA, 3 Ω, Vishay-Siliconix 2N7002E

SOT23

Q2 1 1 MOSFET, P-channel, ZVP3306, –60 V, 0.09 A, 14 Ω, Zetex ZVP3306

SOT23

R1, R2, 3 3 Resistor, chip, 100 Ω, 1/16 W, 5%, 603 Std Std

R11

R13, R14, 3 3 Resistor, chip, 1 MΩ, 1/16 W, 5%, 603 Std Std

R16

R12 1 1 Resistor, chip, 100 kΩ, 1/16 W, 5%, 603 Std Std

R3, R6, 3 3 Resistor, chip, 1 kΩ, 1/16 W, 5%, 402 Std Std

R4, R5, 4 4 Resistor, chip, 100 Ω, 1/16 W, 5%, 402 Std Std

R9, R10

R17, R18 0 2 Resistor, chip, 15 kΩ, 1/16 W, 5%, 603 Std Std

R15 1 1 Resisitor, chip, 10kΩ, 1/16 W, 5%, 402 Std Std

R8 1 1 Resistor, chip, 0.02 Ω, 0.25 W, 1%, 1206 Vishay WSL1206

U1 1 0 Single cell Li-Ion/Polymer gas gauge device, QFN Texas bq27010DRK

Instruments

U1 0 1 Single cell Li-Ion/Polymer gas gauge device, QFN Texas bq27210DRK

Instruments

J1, J3 2 2 Terminal blocks, 3 position OST ED1515

J2 1 1 Terminal blocks, 2 position OST ED1514

J4 0 1 Header, 2-pin, 100mil spacing, (36-pin strip) Sullins PTC36SAAN

N/A 1 1 PCB Any HPA212

6 bq27x10EVM Circuit Module Performance Specification Summary

Table 4 gives the performance specifications of the bq27x10EVM circuit module.

Table 4. Performance Specification Summary

SPECIFICATION MIN TYP MAX UNIT

Input Voltage PACK+/BAT– 2.6 4.5 V

Charge and Discharge Current(1) 2.5 A

(1) Charge and discharge maximum is limited by the PCB design and power dissipation of the 20-mΩ1/4-W sense resistor included

in the kit.

SLUU259A–October 2006–Revised October 2013 bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module

PACK+ BAT-

PACK-

System Load/

Charger

Single Cell Li-Ion

EVM Hardware and Software Setup

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7 EVM Hardware and Software Setup

This section describes how to install the bq27x10EVM PC software and how to connect the different

components of the EVM.

7.1 Software Installation

The following steps install the bq27x10EVM evaluation software:

1. Insert CD ROM into a CD ROM drive.

2. Select the CD ROM drive using My Computer or File Manager.

3. Select the ReadMeFirst.txt file.

4. Follow the instructions to install USB drivers for EV2300.

5. After installing the USB drivers for EV2300, double-click on the Setup.exe icon.

6. The setup program installs a Windows application group

7.2 Hardware Connection

The three hardware components to the bq27x10EVM are:

• The bq27x10EVM circuit module

• The PC interface board (EV2300 – available separately)

• The PC.

7.2.1 Connecting the bq27x10EVM Circuit Module to a Battery Pack

Figure 8 shows how to connect the bq27x10EVM circuit module to a Li-ion cell and the system

load/charger.

Figure 8. bq27x10EVM Circuit Module Connection to Cells and System Load/Charger

7.2.2 PC Interface Connection

The following steps configure the hardware for interface to the PC:

1. Connect colored wires that are included with EV2300 to bq27x10EVM using Table 5 as a guide.

2. For bq27010 connect the connector with colored wires to the HDQ connector that is on the EV2300.

HDQ connection is located on the top right of EV2300. For the bq27210, connect the connector with

colored wires to the I2C connector that is on the EV2300. The I2C connection is just below the HDQ

connection on the EV2300.

3. Connect the PC USB cable to the EV2300 and the PC USB port.

The bq27x10EVM is now set up for operation.

10 bq27x10EVM Single-Cell Battery Fuel Gauge Evaluation Module SLUU259A–October 2006–Revised October 2013

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