Other Parts Discussed in Thread: BQ79616
The customer design with BQ79600PWRQ1 and BQ79616PAPRQ1, They have abnormal communication problems.
BQ79600 communication waveform (when starting up) when the isolation transformer is removed, yellow is COMP-COMHN, purple is COMHP-GND
BQ79600 communication waveform when connecting the isolation transformer, yellow is COMP-COMHN
The schematic as below:
Please help check it.