Other Parts Discussed in Thread: UCC28C43, UCC28C53, UCC28C59
Tool/software:
I've been trying to simulate the design provided by the manufacturer, but I'm encountering issues. The output is consistently zero, although the feedback voltage reads 2.5V, which is puzzling since the optocoupler is not ON. I've verified that the transformer's turns ratio matches the specifications given in WEBENCH. Additionally, I have tried referencing both the feedback and the compensation to ground for stability and consistent reference, but the problem still persists. How can the feedback show 2.5V input when the opto-coupler is not active? I'm looking for insights into what might be causing this discrepancy and how to resolve it.