RDR382 circuit don´t deliver Iout=3,125A

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I just make the circuit proposed in RDR-382 Design report, but Iout = 0,6A @Vout = 42V,

instead of Iout=3,125A@Vout=42V

I revised it but I don't find any mistake.

Can you have any suggestion of which's the problem?

Thank you for your response

Please clarify what is your designed rated power? is it the same as DER382, 3.125A. I assume you can not load it more than 0.6A. can you discribe what happens when you try to load it >0.6A? Is it in CC mode or auto restart or other performanc?