SDAA074 July   2025 BQ27Z561 , BQ28Z610 , BQ40Z50

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Regular Process
    1. 1.1 Time Needed for Chem ID
    2. 1.2 Time Needed for Golden Learning
    3. 1.3 Time Needed for Low Temperature Test
  5. 2Scenarios for Very Tight Schedule
  6. 3How to Shorten the Time
  7. 4Summary
  8. 5References

Abstract

This application note describes an improved method for implementing Texas Instruments' battery gauges that use the Impedance Track algorithm. While these gauges are popular across various devices including smartphones, notebooks, wearables, and industrial equipment, these gauges traditionally require a lengthy Chemical ID (Chem ID) setup and learning period before mass production can begin. The document outlines an alternative approach intended for experienced TI gauge users that can reduce the setup time by 1-2 weeks, streamlining the process from initial Chem ID configuration through to the creation of golden mass production files and battery pack sample manufacturing.