how to use pulse trnsformer

[ahmedmedowahdan]

i want to separate microcontroller input voltage (5v) from the circuit
i use lm2576 switch mode regulator to achieve 5 v from 48 volt
i don't know how to use pulse trnsformer to achieve this isolation

i think it may be like this

**broken link removed**

 

[dfullmer]

This would probably help you understand. The circuit comfiguration I think you are looking for is in here.

**broken link removed**

Look to page 55

Good luck

 

[ahmedmedowahdan]

This would probably help you understand. The circuit comfiguration I think you are looking for is in here.

**broken link removed**

Look to page 55

Good luck

thanks for this paper but ican't find what I am looking for

it's flyback circuit in page 55??

 

[ahmedmedowahdan]

please help >>> i connect pulse transformer as my schematic before but i have no output
another problem >> how i connect feedback for LM2576??