SLUAAW0 May   2025 BQ41Z50

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Authentication Scheme Comparison
  6. 3ECC Key Programming Within the Pack Manufacturing Flow
  7. 4Gauge Authentication Flow of the BQ41z50 Product Family
  8. 5Host Authentication Flow of the BQ41z50 Product Family
  9. 6Authentication Flow in BQSTUDIO
  10. 7Summary
  11. 8References

Abstract

Most Texas Instruments battery fuel gauges support some level of authentication functionality for anti-counterfeit protection of battery packs. This application note summarizes the authentication features and details the process of creating and programming an Elliptic Curve Cryptography (ECC) key pair using the BQ41zxx family of products as an example.