Hi,
I want to design a power supply with the following specs:
AC input voltage: 90-800 VAC
Flyback input voltage: 130-1200 VDC
Output 1: 48V/40 mA -> 2W
Output 2: 12V/80 mA -> 1W
Aux winding: 18V/100 mA
Could UCC28711 in quasi resonant mode achieve good performance in this wide range? Do yo have another suggestion?