Benutzerhandbuch für Texas Instruments Evaluation Module for BQ76925 Analog Front End for 3 to 6 Series Lithium-Ion Cells BQ76925EVM

Inhaltsverzeichnis

• bq76925EVM Evaluation Module

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  • 1 Overview

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    • 1.1 Features

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    • 1.2 Kit Contents

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    • 1.3 Equipment Requirements

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      • 1.3.1 bq76925 Evaluation Software

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      • 1.3.2 Microsoft Windows-Compatible Computer

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      • 1.3.3 USB-TO-GPIO Adapter

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      • 1.3.4 Power Supply for Onboard Cell Simulator

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      • 1.3.5 Power Supply for Simulation of Current

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      • 1.3.6 Battery

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      • 1.3.7 Power Supply to Charge Battery

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      • 1.3.8 Electronic Load

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      • 1.3.9 Digital Multimeter

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      • 1.3.10 Oscilloscope

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  • 2 Circuit Details and Configuration

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    • 2.1 Connections

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      • 2.1.1 BATT+, BATT– (CN1, CN2)

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      • 2.1.2 Cells (CN6)

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      • 2.1.3 PACK+, PACK– (CN3, CN4)

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      • 2.1.4 USB Interface (CN8)

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      • 2.1.5 JTAG Interface (CN7)

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      • 2.1.6 Pack Status (CN5)

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    • 2.2 Configuration Jumpers and Switches (J1 – J6, S2, S4)

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      • 2.2.1 Cell Simulator DIP Switch (S4)

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      • 2.2.2 Circuit Isolation DIP Switch (S2)

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    • 2.3 Pushbuttons (S1, S3)

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    • 2.4 Test Points

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    • 2.5 bq76925

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    • 2.6 MSP430F2122

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  • 3 Quick-Start Demonstration

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    • 3.1 Evaluation Software and USB-TO-GPIO Adapter

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    • 3.2 Configuration Switches and Jumpers

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    • 3.3 Power to the bq76925EVM

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    • 3.4 Connect USB-TO-GPIO Adapter

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    • 3.5 bq76925 Evaluation Software

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      • 3.5.1 Open the Application

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      • 3.5.2 Start Polling Data

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      • 3.5.3 Add Second Power Supply to Simulate Current

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  • 4 Control Register Demonstration

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    • 4.1 View Control Registers

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      • 4.1.1 Introduction

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      • 4.1.2 Factory-Programmed Register Values

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      • 4.1.3 Register Values When Polling

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    • 4.2 Control Registers Introduction

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      • 4.2.1 STATUS: 0x00

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      • 4.2.2 CELL_CTL: 0x01

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      • 4.2.3 BAL_CTL: 0x02

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      • 4.2.4 CONFIG_1: 0x03

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      • 4.2.5 CONFIG_2: 0x04

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      • 4.2.6 POWER_CTL: 0x05

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    • 4.3 Modifying Control Registers

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    • 4.4 Sleep Mode and Wake Up

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  • 5 Control Panel Demonstration

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    • 5.1 Access to the Control Panel

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    • 5.2 Measurement Tab

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    • 5.3 Analog Output Section

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    • 5.4 VCOUT Readings

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    • 5.5 VIOUT Readings

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    • 5.6 Auto Control

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    • 5.7 EEPROM Correction Registers

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    • 5.8 Startup Config Tab

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    • 5.9 Configuration Control

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      • 5.9.1 Configuration Control Example

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    • 5.10 Power Control

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    • 5.11 Logging Tab

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    • 5.12 Log File

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    • 5.13 Log File Options

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    • 5.14 Enable/Disable Logging

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    • 5.15 Log File Example

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    • 5.16 Communications Tab

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    • 5.17 Monitor Window

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    • 5.18 Transactions During a Connect to Device Command

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    • 5.19 I2C

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    • 5.20 I2C Register Read

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    • 5.21 I2C Register Write

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    • 5.22 I2C Communications With MSP430F2122

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    • 5.23 Example of I2C Communications from MSP430F2122

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  • 6 3-, 4-, and 5-Cell Operation

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    • 6.1 Introduction

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    • 6.2 Using Onboard Cell Simulator

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    • 6.3 Five-Cell Operation

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    • 6.4 Four-Cell Operation

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    • 6.5 Three-Cell Operation

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  • 7 Operation With Cells

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    • 7.1 Preparing Circuit for Operation

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    • 7.2 Battery Connection Sequence

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    • 7.3 Six-Cell Operation

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    • 7.4 Five-Cell Operation

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    • 7.5 Four-Cell Operation

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    • 7.6 Three-Cell Operation

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    • 7.7 Battery Removal Sequence

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  • 8 Schematic and Bill of Materials

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    • 8.1 Schematics

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    • 8.2 Bill of Materials

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  • 9 Printed-Circuit Board

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• Important Notices

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