Part Number:BQ40Z50-R1
Dear TI Experts,
My customer has designed BQ40z50-R1 in a 4S pack project. They've finished Current Calibration with 2A source, and performed Learning Cycle and updated Status changes to 0E.
After exported golden files to other devices and do the mass production(The total quantity is 5K), something unusual happened:
1) When IT is disabled, both charging and discharging work well, current is the same as the setting.
2) When IT is enabled, ,~60% of packs(~3Kpcs) have extra offset current ~100mA when charging and relaxing, if setting 2A charging curruent, it will show ~2.1A, when stop charging and remove adaptor, it will remain the ~100mA current other than 0; however when setting to dischage mode, it works well again, and the offset current is gone; If back to charge, the ~100mA offset current back again....
They've tried below related post and the issue still exists. Could you kindly help to give some advice about this issue? Thanks a lot.
