JAJSL33A june 2020 – january 2021 BQ25731
PRODUCTION DATA
The charger monitors the battery discharge current to provide the battery overcurrent protection (BATOC) through voltage across SRN and SRP. BATOC can be enabled by configuring EN_BATOC=1b. BATOC threshold is selected either 133% of IDCHG_TH2 or 200% IDCHG_TH2 through BATOC_VTH bit. The threshold is also clamped between 100 mV and 360 mV SRN-SRP cross voltage.
When discharge current is higher than the threshold after 250-μs deglitch time, BATOC fault is triggered, status bit Fault BATOC is set accordingly. Converter shuts down when BATOC is asserted to disable OTG operation and reduce discharge current.
BATOC is not a latch fault, therefore after BATOC fault is removed, with 250-ms relax time, converter resume switching automatically. But status bit Fault BATOC is only cleared by host read.