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BQ24160: Charge complete status does not occur in low temperature environment

Ryu Yamashita
Genius 3625 points
Part Number: BQ24160

Tool/software:

Hi team,

If 300mA or 150mA is written to the register [Reg 05h, bit2 - 0] of the termination current and the battery is charged in the environment of 0 to 10°C, the status [Reg 00h, bit6 - 4] will be 011-Charging from IN or 100-Charging from USB, but not 101-Charging Done.
(The current is gradually decreasing with each increase in battery voltage (CV charging), but the status does not become 101-Charging Done at the set end current value.)
*This phenomenon does not occur under normal temperature.

Is there any possible cause?

Best Regards,
Ryu.

  • 0
    TI__Genius 17725 points

    Hi Ryu,

    This is likely due to the TS Cold status of the charger. Section 8.3.2 of the datasheet indicates that termination is disabled when a loop other than the Constant Voltage regulation loop is regulating charging:

    Best Regards,

    Juan Ospina