Other Parts Discussed in Thread: UCD3138
Hello
I imitated the PSFB development board of UCD3138 to make a power supply prototype,
and encountered a problem when doing load jumps.
When the load jump amplitude is small, such as a jump from 6A to 10A, Vo changes normally, about 1V, as shown in the figure below.
But when the load jump amplitude is large, such as from 6A to 18A, Vo changes abnormally, about 10V.
During the test, it jumped from 6A to 17A, and the change of Vo was normal.
I suspect that some protection has been triggered, causing Vo to change abnormally?
