Other Parts Discussed in Thread: TPS54302
Hi,
I'm seeing unusual behavior while current probe is inserted at the output of DC-DC converter. Once I remove the probe, output waveform become normal. It is also not oscillating with constant current load. I checked loop gain without current probe and it looked fine with 55deg of phase margin. I attached several waveforms below for reference.
Model of current probe is Tektronix TCP202.
Do you have any idea why the converter is oscillating?
Best regards,
Figure1. Output oscillation
Figure 2. Loop gain