SLUUCJ6 November   2023

 

  1.   1
  2.   BQ76907 Evaluation Module
  3.   Trademarks
  4. 1Features
    1. 1.1 Kit Contents
    2. 1.2 Ordering Information
    3. 1.3 BQ76907 Circuit Module Performance Specification Summary
    4. 1.4 Required Equipment
  5. 2BQ76907 EVM Quick Start Guide
    1. 2.1 Before You Begin
    2. 2.2 Quick Start
  6. 3Battery Management Studio Software
    1. 3.1 System Requirements
    2. 3.2 Installing BQStudio
    3. 3.3 BQ76907 bqz File Installation
    4. 3.4 BQStudio Operation and Registers View
    5. 3.5 Commands
    6. 3.6 Data Memory
      1. 3.6.1 Entering, Saving, and Loading Configuration
    7. 3.7 Command Sequences
  7. 4BQ76907 Circuit Module Use
    1. 4.1 Cell Simulator
    2. 4.2 Evaluating with Load Current
    3. 4.3 Evaluating Charge and Discharge Currents
    4. 4.4 Evaluating with Simulated Current
    5. 4.5 Reducing the Cell Count
    6. 4.6 Connecting Cells
    7. 4.7 Connecting to a Host
    8. 4.8 Hardware Configuration
      1. 4.8.1 Configuration Jumpers
    9. 4.9 Configuration Register Programming
  8. 5BQ76907EVM Circuit Module Physical Construction
    1. 5.1 Board Layout
    2. 5.2 Bill of Materials
    3. 5.3 Schematic

Abstract

The Texas Instruments BQ76907EVM is a complete evaluation system for the BQ76907, The BQ76907 is a highly integrated, high accuracy battery monitor and protector for 2-series to 7-series Li-Ion, LiPolymer, and LiFePO4 battery packs. The BQ76907 features a high accuracy monitoring system with dedicated coulomb counter and accumulated charge integration, a highly configurable protection subsystem, and support for host controlled cell balancing. Integration includes low-side protection NFET drivers, a programmable LDO for external system use, and an I2C host communication interface supporting up to 400-kHz operation with optional CRC. The evaluation module includes one BQ76907 integrated circuit (IC), sense resistor, one thermistor, power FETs, and all other onboard components necessary to protect the cells from overcharge, over discharge, short circuit, overcurrent discharge, over temperature, and under temperature. The circuit module connects directly across the cells in a battery, or can be connected with a power supply and the included cell simulator resistors. With the on-board interface or compatible external interface board and Microsoft®Windows® based PC graphical user interface (GUI) software, the user can view the device registers, evaluate voltage, current and temperature accuracy, adjust protection limits, and enable FET control outputs.