I'm doing an off-line smps capable to charge the 200 000 uF capacitor from 0 to 65 Volts in 2 seconds. I used PIExpert 10 to do the design. It suggested TOP262EN and I used N87 ETD44 core (I've got big amount of them with different gaps).
I've chosen the "zener on primary" topology, made a prototype, but it charges my capacitor in 25 seconds instead of 2.
So how can I make it work faster?
Fast chargers goes slow.