Hi,
I would like to ask you about the UCC2897A device.
I removed the red boxed part, and add aux winding at output Inductor.
But, my circuit doesn't work.
If I don't connect aux winding, Vdd voltage reaches up to UVLO threshold voltage, and discharge above 8V.
But, if I connect aux winding, Vdd voltage doesn't reaches up to 12.7V.
It just on 2V.
I want to work my circuit.
please help me.
Best regards