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BQ40Z50-R1: Is there a way to detect mains power is connected when not charging?

Maker Marc
Prodigy 10 points
Part Number: BQ40Z50-R1

Hi Folks, 

I am already able to detect if a device is charging, but is there a method to detect a device is connected to external power but not charging?

Some examples: 

Battery is 100% charged, and connected to an external power source.

Battery is <100% charged, and connected to external power, but not charging.

Thanks for your suggestions. 

  • 0
    TI__Guru 52115 points

    You can check the OperationStatus()[XCHG] bit, ChargingCurrent() and ChargingVoltage(). 

    100% RSOC usually occurs when a valid charge termination is detected and then the CHG FET turns off. OperationStatus()[XCHG] will be set to 1, which means charging is disabled. Both ChargingCurrent() and ChargingVoltage() should return 0.

    Andy