Hi,
after struggling for having correct regulation with my LM25145 buck converter board, i finally got right regulation, also with load, and i can achieve 12V from 24V input. My question is, if this waveform i have at switching ndte it is correct. I don t understand why there is a ~9us hole (0V signal) in switching waveform, every ~32us. Is this a normal behaviour?? Or is this a weird switching waveform?? I also can hear a loud noise coming out from regulator, similiar to a whistle.
Someone who has experience with switching buck regulator, can give a little assessment? Many thanks.
Kind Regards
Emanuele P.