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Feed back design of Half bridge LLC Resonant Converter

Other Parts Discussed in Thread: UCC25600

I have calculated the LLC resonant converter parameter with the following specification

Vin= 300 to 400 vdc       Vout=48vdc       output power=200W        Switching frequency= 250Khz

Cr=9nF       Lr=33uH     Lm=221uH        n=4.16

But i don't know how to design the feedback for these specification because i don't have any knowledge about feedback design and i am just a beginner in research but i have 4 months left to make my hardware of this converter. I have downloaded this beow circuit of texas instrument and i need a detail method how to calculate each and every component of the feedback circuit? I need help please