SLUAAX5 August   2024 BQ25750 , BQ40Z80 , MSPM0L1306

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2The Role of MCU in Smart Battery System
  6. 3Application Example Using BQ25750, BQ40z80, and MSPM0L1306
    1. 3.1 Gauge Setup
    2. 3.2 Charger Setup
    3. 3.3 MCU Setup
    4. 3.4 Communication Protocol
    5. 3.5 MCU Code Example
    6. 3.6 Data Collected
  7. 4Summary
  8. 5References

Abstract

When creating a Battery Management System (BMS), and the charger and gauge uses different communication protocols, such as Inter-Integrated Circuit (I2C) and System Management Bus (SMBus), the microcontroller unit (MCU) needs to interface between chargers and gauges, or needs a system that has different communication protocols for each device. This application note illustrates the use of MCU for a Smart Battery System (SBS) where the MCU polls the SMBus gauge, translates the received data to be compatible with the I2C charger (based on I2C specifications), and transmits to the I2C charger.