Hi,
Customer used 2pcs bq76940 to develop 30cell BMS project, when the board ran about half an hour ,there will be random have 70mV drift high then the cell voltage. Reset the board, the measured value will be correct. Schematic as below. I'd like to know why this happened, how to fix this issue. thanks!
BTW, customer connect SRP & SRN for current sense, if customer revised SRN to Negative (Nearest to VSS),(Datasheet Pin Mapped SRP to Negative and SRN to Positive), Whether this issue impact the voltage measured high drift 70mV?