Support,
Our product design is using the Bq25883 as the battery charger for a 2s Li-Ion battery which contains the traditional integrated pack protection which protects the battery pack from over-discharge, among other things. When the battery discharges to 6.0V, the integrated battery pack protection disconnects the battery, resulting in the battery pack leads having 0V. To release the protection circuitry from its under-voltage lockout condition, a voltage of ~5.5V or greater needs to be applied to the battery pack for a short duration (<< 100ms). To my knowledge, this is the normal Li-ion pack protection circuitry operation.
My issue is, the Bq25883 is not applying any voltage to the pack when it's in the under-voltage lockout condition and therefore never recovers the battery from a discharge.
The datasheet claims it detects a battery is connected by applying a discharge load of ~10mA to the battery upon power-up, but obviously if my battery is disconnected from the under-voltage lockout protection, it's not going to be providing the discharge current.
I have not been able to find a way for the Bq25883 to apply a voltage to the battery to release it. This seems like a normal battery charger scenario that should be covered by the chip, so hopefully I am missing something?
-Ethan
