Hi
The customer design with BQ25606, want to realize: When the battery is not fully charged, the battery can be charged by inserting VBUS, and SYS is provided by VBUS.
Connect VBUS first, then the battery, and it can be charged normally. But connecting the battery first and then VBUS cannot charge. VBUS 5.2V 4.2V when the battery is fully charged, current battery power supply 3.9V
Other information: SYS load 190ma circuit diagram is as follows:
When charging is abnormal, the STST and PD_N pins are at high level.
Please help check it.
Thanks
Star
