I adapt TIDM-dc-dc-buck to control a boost converter. This problem happens at close loop voltage mode. Basically, it can regulate from 48V input to 65V output. but I notice some bumps in the output voltage. Zoomed in, I noticed that upper PWM signal is missing in some duration, it can be from 1 switching period to 4 switching period, while the lower PWM signal is correct. I am wondering why, it should appear as a pair.
Deadtime is not set for boost mode, because the gatedriver can provide deadtime.
In the waveform below, purple is upper switch PwM, yellow is lower switch PWM. Blue is output voltage.