topswitch-gx flyback dc-dc converters load sharing
Posted by: nagasahitya
on
hello sir,
i want to parallel two topswitch-gx flyback dc-dc converters for load sharing.plz suggest a method without using load share ic.my card rating is 40V,1A
Comments
is there any solution with op-amps for load sharing because i have to maintain less than 10% error from 10% load to full load.
Unfortunately at this time we do not have any other circuit for supplies to share they output power
In the past I made a power sharing system by juts having two diodes at the output of each supply to "OR" the outputs and deliver power to the load. It worked good. You have to use TL431 to have good output voltage regulations. The better each supplies regulates its output, the better the sharing of the power. The trade off is the drop of each diode to implement the OR function. If efficiency is not an issue for you then I think you may use this solution.