design of isolated smps

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yadnesh256

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i m trying to design a isolated buck converter that will give me 5v fixed output
Vin= 7v to 30V.
i want to desing a pwm whose output is connected to transformer.
PWM receives i/p from optocoupler which gets i/p from the output of buck converter.

It would be very nice of u if u help me in this....

Thanking in advance
 

Hi Yadnesh ,
i think you want design a flyback converter . right ?
I think you'd better to take a look at datasheet of UC3845 .
Best Wishes
Goldsmith
 
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