Hi,
I used this chip for 12V to 20V flyback. I am not sure if this chip is suitable for this application or not.
To run it, I used another boost converter to supply it VDD to 25V, because the turn on voltage is above 12V. When it starts, the controller generated three pulses and then stop. I think it entered fault mode.
I guess it may go to the line sensing error. I wanna ask if this is a correct way to use this chip, and how can I fit it into this application.
Thanks.