Hello, I am currently using UCC28950 doing a 2KW prototype, with constant voltage constant current output (share the same loop with a diode OR gate), synchronous rectification EF useless, direct 10K to GND， is currently experiencing problems AB drive waveform good, CD drive slightly left and right output jitter, resulting in a slight noise at work. I am currently wondering is:
1, this is likely to be around the loop jitter problem, I adjust the loop parameters (capacitance for a few orders of magnitude), no change at all; jitter amplitude, different load sound, are the same,
2, why only about CD jitter, AB waveform is very good, I also try UCC28950 output from the AB and CD swap exclude output drive part of the hardware problem.
3. Will I get a sample is false?
Look forward to your reply, if desired schematic or waveform analysis can provide, thank you!