hi all,

I have designed a smps and it is working. schematic is as attached. but i have problems of high ripples at the output..

here i have noticed that when the switching transformer is switching the shape of the primary transformer wave has ripple.

could anyone suggest a method to have a clean switching .

any comments are much appreciated

 

dear sharmila,

For smps it is better to go for Power integration

 

Hello,

I think you will need a snubber circuit to get rid of the ringing.
take a look at this page how this works.
http://www.maxim-ic.com/appnotes.cfm/an_pk/907

Greetings,
Bertus