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Original question:

BQ25883: how to know if the battery is connected

BQ25883: BQ25883:Battery detection

griish singh
Prodigy 40 points
Part Number: BQ25883

Hi, is there any way to implement battery detection functionality?

Regards,

Girish SIngh

  • 0
    TI__Guru**** 166956 points

    Hi Girish,

    You can write a host software routine that does some combination of the following:

    1. If you have a thermistor monitoring battery temp, then use the ADC to periodically sample the TS pin voltage and store the last few TS voltage data points.  If there is abrupt change in TS voltage from one measurement to then next (as opposed to slowly changing from  then you know that the battery was removed/attached.

    2. and/or if no thermistor or TS function disabled, then use the ADC to monitor charge status for rapid transition from fast charge to termination as the charger charges up only the output capacitors on the BAT pin, then terminations, then the capacitors discharge and the process restarts.

    Regards,

    Jeff