Tool/software:
Hi,
I am experiencing issues with the UCC28950PWR under light load conditions.
- The switching frequency increases significantly (e.g., ~298kHz at 1.5A load), causing large surges. What could be the root cause of this behavior?
- Are there recommended methods to mitigate these surges under light load?
Attached are the FET gate waveforms for reference:
- Attachment 1: 1.5A load (frequency ~298kHz)
- Attachment 2: 3A load (frequency ~148kHz)
Your guidance on understanding and resolving this issue would be greatly appreciated.
Thanks,
Conor