Other Parts Discussed in Thread: BQ25798
We are doing various operation tests using BQ25972EVM.
Customer tested removing the battery during the charging operation.
As a result, BQ25792 acted as a momentary power failure of VSYS voltage.
VSYS stabilizes when CE is disabled or a battery is connected.
Could you tell me why the system voltage drops regularly if you remove the battery while charging?
Test condition is ;
・Vsys min = 5000mV
・Charge Voltage = 6600mV
・Charge Current = 1000mA
・IINDPM = 3000mA
・VBAT=LOWV = 15%*VBATERG
We assumed that VSYS would be maintained if the battery was removed while the VBUS was connected and charging.
Customer want to provide a stable VSYS even when the battery is removed.