TOP271VG Start-up Problem at Low Line Input Voltage
I have designed 85-265VAC input, 24V/5A output flyback converter with TOP271VG. Design is working well and stable from 110VAC to 265VAC input at full load.
Converter is going to restart mode under 100VAC and restarts above 104VAC input. I have tried input capacitor up to 360uf and there is no difference.
How can I improve the input voltage regulation down to 85VAC.