Other Parts Discussed in Thread: LM5025, UCC27201
We are using UCC27200 as active clamp Power supply, LM 5025 together.
We found that this parts has broken when applied 48Vdc power without VDD. This power comes through main transformer primary side.
We believe that voltage ratings is over 120V so our application is quite low. Please reply what is wrong?
In addition with the LM5025 controller, when activated 7.6V typ voltage applied from LM5025 then UCC27200 seems to fail (Broken?).
After reached 8V VDD to UCC27200, it goes up normal operation.