ZHCSNB8A February 2021 – January 2024 BQ25730
PRODUCTION DATA
Battery overvoltage may happen when user plugs in a wrong battery or a wrong regulation voltage is written into ChargeVoltage() register. The BATOVP rising threshold is 104% of regulation voltage set in ChargeVoltage() register, and falling threshold is 102% of regulation voltage set in ChargeVoltage() register. When BATOVP rising condition is triggered: if charge is enabled (charge current is not 0A) converter should shut down with both HS MOSFET and LS MOSFET turned off; if charge is disabled the converter should keep operating without disturbance until battery rise up system voltage to be high enough trigger SYSOVP. There is no user status bit to monitor. Note VBAT voltage used for BATOVP detection is based on SRN pin measurement. When BATOVP is triggered with charge enabled, 40-mA discharge current is added on VSYS pin will help discharge battery voltage.