Other Parts Discussed in Thread: UCC28700
Hi,
I use the UCC28700 for a flyback 12V3A and the WE 7508112341 trafo.
i cant reacht the max output current, after 1.6A the voltage drops slowly to 0V, it seems like a current limitation, the frequency is not increasing enough (55kHz).
Do you have any idea why it stops at 55kHz?
Rcs = 0.43R (Rcl = 1k, 20pF)
Rs1 = 121k + 5.62K
Rs2 = 60.5k + 5pF