Tool/software: Code Composer Studio
1, What condition will cause CHGR OFF(which is one condition for CFET PF)?
2, What condition cause CFET OFF when 30% cell is normally charged? I admit that current reading is not accurate in this batch board that causes ghost current.
Our test result: The condition to reproduce this problem is to use this batch of board, keep about 30% SOC(100% BBU can’t reproduce this issue), put it in 5C-10C temperature, and then power up. This CHG FET failure PF comes up. We use 13mA and 25mA threshold FW to do same test(same steps with above ones). Both of them charge to 100% without this issue.
Thanks!
