Other Parts Discussed in Thread: LM5155
I've loaded the LM5155EVM-SEPIC with 10 ohm load. Vin 17v. Switching frequency 2.14MHz
I'm observing very large ringing on:
Output diode's anode
The frequency of the ringing is the same on both nodes
That results in wide spectral noise
I've tried to use snubbers across the FET and/or across the diode, made the sepic capacitor C4 larger but no change in the ringing.
Please advise how to eliminate this ringing.