Other Parts Discussed in Thread: BQ78350
Hi
The customer design 6cells with stm32l071+bq78350+76930 + bq76300.
Cell Balance Threshold 3900mV, Cell Balance Window 50mV, Cell Balance Min 20mV.
During test the cell1-6 voltage is 3974mV, 4089mV, 4085mV, 4086mV, 4088mV, 4081mV.
when they use 1A charge, CB bit is set, Cell1 voltage changes to 4120mV, and after a period of time it changes to 3680mV.
When using a multimeter to test the VC1 pin, the voltage changes to a transition between 6-8V, then the CB bit clear, and the balance is turned off.
Attached the schematic
7245.LH_SMART_BATTERY_V1.0.pdf
Please help check the schematic.
When the balance turn off the cell 1 voltage return normal.
Thanks
Star
