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BQ24193: bq24193

Katsuhiro Kanao
Intellectual 1710 points
Part Number: BQ24193

Hi team

bq24193 has 4 status for charging as bellow.

1.In case of watch dog timer detected, is CHRG_STAT becomes 00 or 01 ?

2. In case of host mode, when host CPU judge the charge termination by itself, then want to stop charging.

   2-1  How to stop charger ? sending command or using external pin ?

   2-2 Do  CHRGE_STAT1,0 becomes 11 automatically ?

 best regards K.Kanao

  • 0
    TI__Expert 8230 points

    Hello Katsuhiro,

    Katsuhiro Kanao said:
    In case of watch dog timer detected, is CHRG_STAT becomes 00 or 01 ?

    Are you referring to watchdog expiration? If so, the value of CHRG_STAT will depend on the battery voltage and operating conditions. If the battery voltage is within the precharge threshold and the device has a valid input, the device should enter pre-charge using the default register settings with a CHRG_STAT of 01. Similarly, if the battery voltage is within the fast charger, it should enter the fast-charge state with a CHRG_STAT of 10. If the device was configured to disable charge, for example (CHG_CONFIG = 00b) and the timer expires, it will revert back to enable charging (default CHG_CONFIG =01b).

    In the case of host mode, you can either pull up the /CE pin using a GPIO on the host CPU or setting REG01[4:5] = 00b (charge disable). At this point, the CHRG_STAT becomes 00b (Not charging).

    If termination is enabled (REG05[7]), the device will terminate when current drops below the termination current setting without host intervention. Upon termination, CHRG_STAT becomes 11b(Charge Termination Done).