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

4.4 Evaluating with Simulated Current

The BQ76907 EVM Quick Start Guide describes connection for basic operation. Providing more than recognizable current in that configuration can require a power supply with a significant power rating. Applying a charge current can damage some power supplies. Figure 4-3 shows a method to force current through the control path without a high wattage power supply or special equipment. The load power supply needs to be set at a low voltage in a constant current mode. Polarity can be reversed on the load supply to simulate a charge current. The battery simulation supply must never be reversed.

GUID-20220718-SS0I-WVXK-HGFP-HSRZST3HMJQM-low.svgFigure 4-3 Simulating Current Setup