Hi
I'm testing a dual BUCK(13V,18V) by LM5119.
There is no problem with 13v but 18v start a hiccup at no load.
Looking at the data sheet, there seems to be only an over current related to the hiccup.
Can you be a hiccup for another reason?
-test condition
2-ch Buck(LM5119)
-
Input: DC 66~100V
Output: DC 13V / DC 18V
DC 18V 1A(typ) / 11A(peak)