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ultra wide input DC-DC converter 12V/3A output


Following is my design specs. Request , if you could help me with the reference design and probable solution

Power supply specs:

Input Voltage – 24VAC - 230VAC(RMS) ( +-10%) or 30VDC to 375VDC

Output Voltage – 12V

Output Current – 3A

EMI/EMC requirement: EN5011 CLASS A
                                  EN61000-4-2,3,4,5,6,8,11

I think the  PMP7760 supports this above wide range, but the op is 21V/1.5A,  what modification can be done with this design to output 12V/3 A?.

does this design can pass EMI/EMC Class A?

Awaiting your valuable response