SLVUDW8 May   2026

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1 Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specifications
    4. 1.4 Device Information
  6. 2 Hardware Setup
    1. 2.1 Hardware Requirements
    2. 2.2 Connecting the BQ27Z846 Circuit Module to a Battery Pack
    3. 2.3 EVM Jumpers and Terminal Block Description
  7. 3 Software Setup
    1. 3.1 System Requirements
    2. 3.2 Software Installation
    3. 3.3 Updating Firmware
    4. 3.4 Troubleshooting Unexpected Dialog Boxes
    5. 3.5 Using bqStudio
      1. 3.5.1 Starting the Program
      2. 3.5.2 Setting Programmable BQ27Z846 Options
  8. 4 Calibrating Gauge Measurements
    1. 4.1 Voltage Calibration
    2. 4.2 Current Calibration
  9. 5 Chemical ID
    1. 5.1 Chemical ID Selection Process
    2. 5.2 Hardware Requirements and Setup
    3. 5.3 Logging Data in bqStudio
    4. 5.4 GPCCHEM Tool
    5. 5.5 Programming a Chemical ID
    6. 5.6 Further Resources for Chemical ID Process
  10. 6 Learning Cycle and Golden Image
    1. 6.1 Learning Cycle Process Description
    2. 6.2 Data Memory Configuration
    3. 6.3 Learning Cycle Steps
    4. 6.4 Low Temperature Optimization
    5. 6.5 Creating the Golden Image File
    6. 6.6 Programming the Golden Image File
  11. 7 Gauge Communication
    1. 7.1 Advanced Communication in bqStudio
    2. 7.2 Standard Data Commands
    3. 7.3 Manufacturer Access Commands
    4. 7.4 Further Resources on Gauge Communication
  12. 8 BQ27Z846-Based Circuit Module
    1. 8.1 Circuit Module Connections
    2. 8.2 Pin Descriptions
  13. 9 Hardware Design Files
    1. 9.1 Board Layout
    2. 9.2 Schematic
    3. 9.3 Bill of Materials
  14. 10Additional Information
    1.     Trademarks
  15. 11Revision History

1.1 Introduction

The BQ27Z846EVM comes with the BQ27Z846 integrated gas gauge and protection IC with external high-side protection N-Channel FETs. This user's guide gives directions for the following tasks:

  • Connect the necessary components together to power up the EVM
  • Installation of the necessary Texas Instruments software tools
  • Setup of the EVM with additional hardware and software
  • Calibrate the BQ27Z846 voltage and current readings
  • Perform the Chemical ID selection process
  • Optimize gauge reporting with a Learning Cycle
  • Create and upload a Golden Image
  • Use Advanced Communication with the gauge

These tasks direct the user of the BQ27Z846EVM through the process required to prepare for production with the BQ27Z846 by creating a "Golden Pack". A Golden Pack is a single gauge and battery that has had optimization and configuration processes performed during the development stage. The resulting values are extracted from the Golden Pack gauge into the "Golden File" or "Golden Image". The Golden File is a flash image programmed into every gauge used in mass production because there is minimal pack-to-pack variation during a well-controlled manufacturing process. The Dynamic Z-Track algorithm enables the gauge to continue to learn once a pack is deployed to account for manufacturing differences, field conditions, and lifetime battery degradation.