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Original question:

BQ25619EVM：BQ25619 EVM

BQ25619EVM： Battery Over-discharge in supplement mode

user5781628
Intellectual 970 points
Part Number: BQ25619EVM

Hi Ning,

In supplement mode, the battery will discharge to system.

If the system heavy load is always present, the battery will be possible to falling to the battery depletion voltage.

After trigger the VBAT_DPL_FALL, the BATFET will latch-off even if the VBUS is present.

How to recover the battery charge again?

BR

Eleven

  • 0
    TI__Expert 5590 points

    Hi Eleven:

    BATFET will be turned off not latch off. To recover charge, load on SYS load needs to be removed. In real application, "SYS heavy load" should have been cut off before the SYS voltage drops too low because of UVLO voltage on load.

    Regards,

    Hong