Other Parts Discussed in Thread: BQ76200, , BQ78350-R1, BQSTUDIO
Hi Everyone,
I have made a custom board using bq76940, bq78350-R1, and bq76200 for my 14S battery pack configuration. I powered it 54V at BATT+ and BATT- pin and given all sensing input to it (C0-C15, While C13-C14 shorted). Before applying voltage at TS1, I measured voltage at following points
BATT: 54V, VC5X:3.8V, VC10X:38.7V, REGSRC: 2.8V, CAP1: 54V
VC0: 0V, VC1: 2.6V, VC2: 6.7V, VC3: 6.1V, VC4: 5.2V, VC5:15.94
VC6: 16.9V, VC7: 27.1V, VC8: 31V, VC9: 34.9V, VC10: 38.8V
VC11: 42.7V, VC12: 46.6V, VC13/14: 50.6V, VC15: 54.5V
Group VC0-V5X voltages are not proper and voltage sensing filter circuit of this particular group is getting heated.
Should I apply voltage at TS1 pin for bq76940 device boot up? What could be the possible reasons for this mismatch?
Thanks in advance.