Tool/software:
Issue 1: Facing issues with the design using lm5190-q1. The buck regulator gives the perfect output for sometime (the gate waveform looks as expected and is attached). But after sometime, so much ringing is observed on gate signals, that buck converter draws more input current without any load. When gate signals comes ok, at 57.5v Input current drawn is 0.03A but after sometime the input current goes to 0.08, and if we probe the gate signals at that time, ringing is observed. Same ringing is observed in Switching Node also.
Issue 2: The resistance (Rt) is not giving the switching frequency as calculated. For 200 Khz, calculation comes to 120KOHm but I am getting 200 Khz at 60K.
Issue 3: We have set the output feedback divider for 14.5V. Most of the time output is 14.5V, but sometimes only 5V is maintained at the output, this becomes ok if we turn off the supply and turn back on again.
Where could be the problem, I just need the direction, to look towards?
