Other Parts Discussed in Thread: LM5012
Tool/software:
I have designed Lm5012 circuit for my BMS application for 48V to 12V with rated current of 2A.
Currently, I am testing with power supply of 35V. but inductor is making humming noise even at 10mA load current. I have done schematic as below. I have selected these values based on webench result.
Can you please suggest what could be the reason and what should I try?
1. I tried to change Ron (R104) to increase frequency, but not much change
2. I tried to change inductor of 33uH but of compact packing, little bit reduced, but still noise is there.
Thanks,
Monika