Hello.
I have a question about UCC 2819A.
We create a board and check the operation.
An abnormal noise(sound) occurred when turning on the power supply and operating.
There is no noise when replacing the IC.
IC in which noise is generated: NG_IC
No abnormal noise generated IC: OK_IC
Looking at the waveform of each IC will be like the attached.
Please tell me about the cause and measures.
Thank you.