SLUUCD7A May   2021  – May 2026

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Features
    1. 1.1 Kit Contents
    2. 1.2 Ordering Information
  5. 2 BQ27427-Based Circuit Module
    1. 2.1 Circuit Module Connections
    2. 2.2 Pin Descriptions
  6. 3 Evaluation Module Physical Layout, Bill of Materials and Schematic
    1. 3.1 Board Layout
    2. 3.2 Bill of Materials
    3. 3.3 Schematic
    4. 3.4 BQ27427 Circuits Module Performance Specification Summary
  7. 4 EVM Hardware and Software Setup
    1. 4.1 Software Installation
  8. 5 Troubleshooting Unexpected Dialog Boxes
  9. 6 Hardware Connection
    1. 6.1 Connecting the BQ27427 Circuit Module to a Battery Pack
    2. 6.2 PC Interface Connection
  10. 7 Operation
    1. 7.1 Starting the Program
    2. 7.2 Setting Programmable BQ27427 Options
  11. 8 Calibration
    1. 8.1 Calibrating the BQ27427
    2. 8.2 Voltage Calibration
    3. 8.3 Board Offset Calibration
  12. 9 Advanced Communication I2C
    1. 9.1 I2C Communication
  13. 10Related Documentation
  14. 11Revision History

8.3 Board Offset Calibration

This performs the offset calibration for the current offset of the board.

It is expected that no current is flowing through the sense resistor while performing this calibration step.

  1. Remove load and short PACK– to LOAD–.
  2. Press the Calibrate button
BQ27427EVM Calibration Screen Figure 8-1 Calibration Screen