I was trying to verifying perfomance on my bread boards based on TPS54020...no way it doesn't start, I've tryied averything, even change the sample didn't produce any result.
I check BOOT-PH voltage and enable threshol and seems ok.
It performs soft start but as the ramp reachs 0.6V (approximatly) then is pull down and start again ( see graph)
Cian: Boot, Cian: SS, Yellow: COMP, Grenn: PH
4174.tek00001.tif1385.12Vto6,7V_6A_TPS5420 desing.pdf
Real circuit compared to the graph, has a lower bandwith loop compensation.
Many thanks.
