SLUUD32A June   2024  – April 2025 BQ41Z50

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2BQ41Z50EVM Quick Start Guide
    1. 2.1 Items Needed for EVM Setup and Evaluation
    2. 2.2 Software Installation
    3. 2.3 EVM Connections
      1. 2.3.1 Connectors
        1. 2.3.1.1 Primary Input and Output Connectors
        2. 2.3.1.2 Jumper Placements
        3. 2.3.1.3 Battery Connector
        4. 2.3.1.4 Load/Charger Connector
        5. 2.3.1.5 GPIO Connector
    4. 2.4 Update Firmware
  7. 3Hardware
    1. 3.1 BQ41Z50 Production Calibration Guide
  8. 4Software
    1. 4.1 Battery Management Studio
      1. 4.1.1 Registers Screen
      2. 4.1.2 Setting Programmable BQ41Z50 Options
      3. 4.1.3 Calibration Screen
        1. 4.1.3.1 Voltage Calibration
        2. 4.1.3.2 Temperature Calibration
        3. 4.1.3.3 Current Calibration
      4. 4.1.4 Chemistry Screen
      5. 4.1.5 Programming Screen
        1. 4.1.5.1 Programming the Flash Memory
        2. 4.1.5.2 Exporting the Flash Memory
      6. 4.1.6 Advanced Comm SMB Screen
  9. 5IT-DZT Guide To Gauging
    1. 5.1 What is Dynamic Z-Track™ (IT-DZT)?
    2. 5.2 Overview of IT-DZT
    3. 5.3 Critical IT-DZT Parameters
    4. 5.4 IT-DZT Chemistry Details
    5. 5.5 Implementation of Dynamic Load (IT-DZT)
    6. 5.6 Results
  10. 6Hardware Design Files
    1. 6.1 BQ41Z50EVM Circuit Module Schematic
      1. 6.1.1 LED Control
    2. 6.2 Circuit Module Physical Layouts
      1. 6.2.1 Board Layout
      2. 6.2.2 Schematic
    3. 6.3 Bill of Materials
  11. 7Additional Information
    1. 7.1 Trademarks
  12. 8Related Documentation
  13. 9Revision History

4.1.3.3 Current Calibration

The Board Offset calibration option is not offered in Battery Management Studio, because the Board Offset calibration is not required when using the BQ41Z50EVM.

  • Connect and measure a -2A current source from 1N (–) and Pack– (+) to calibrate without using the FETs. (TI does not recommend calibration using the FETs).
  • Enter –2000 in the Applied Current field and select the Calibrate Current box.
  • Press the Calibrate Gas Gauge button to calibrate.
  • Deselect the Calibrate Current box after current calibration has completed.