SWIFT Isolate Flayback circuit

Hi PAN-M,

How much output current?

For an isolated design I recommend looking at the LM5017 family for a flybuck or using a boost converter/controller to make a flyback.

Best Regards,
Anthony

Thank you for reply.

Output current is 4W(2W+2W).
I know that there are AN2204 and AN2292 in LM5017 web page.
However, we want a circuit to feedback using the photo-coupler from the output because we need for accuracy.
The LM5017 family are good for us.(this device has current limit, over temp.)
Do you have flyback circuit of this specification? 

Best Regards,
PAN-M

+/-5% regulation might be possible with the LM5017 without using an optocoupler with this lower power level.

If you'd like to use an optocoupler for tighter regulation, you might find PMP5666.1 a good reference for a flyback design.

http://www.ti.com/tool/pmp5666.1

Thank you for support.

I know this design, but this is using TPS40210.
And, I know this design change from TPS40210 to LM5017, but I don't have calculation tool.
So, I need reference design. (to our customer)
OK, I try to change this circuit.

Thanks and Regards,
PAN-M