I have a design using UCC28C53DR with the following parameters:
Vin = 85-265VAC
Vout = 24V/4A
fsw = 100kHz
When applying a 1.5A load to the output, I see this waveform on the Gate of the MOSFET.
The gate is clearly not switching properly, or at the 100kHz target frequency, but the V_24V output is stable. There are also large spikes when the MOSFET switches off. What can I change in my schematic to get rid of these spikes?