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bq78350参数配置问题

Other Parts Discussed in Thread: BQ78350, BQ78350-R1, BQ76940

采用76940+78350的方案,疑问是不是配置78350的参数就可以了,76940只是当一个电压电流采集的作用。

  • 你的理解是对的。76940是一个模拟前端,负责电压电流温度的采集。电量的计算和控制由78350来实现
  • 在用户手册中,BQ78350具备充电算法,如

    The bq78350-R1 charge control features include:
    • Provides a range of options to configure the charging algorithm and its actions based on the application
    requirements
    • Reports the appropriate charging current needed for constant current charging, and the appropriate charging
    voltage needed for constant voltage charging
    • Supports pre-charging/0-volt charging
    • Supports charge inhibit and charge suspend if battery pack temperature is out of temperature range

    请问芯片是如何控制的,是通过BQ76940的DSG、CHG控制充电电流、电压吗?但是BQ76940寄存器的更新率大约为250ms,这么低的更新率如何控制FET开关,以达到控制电压、电流的目的