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UCC2897A: Control driven rectification

Part Number: UCC2897A
Other Parts Discussed in Thread: TPS28225


We are going to use PMP4844 design for our power requirement Vin 20-32V vout:24V Iout:5A.

In PMP4844 control driven rectification is used.

I am calculated the sync rectifier's power loss calculation and no of mosfets to be used based on the below link. . This design guide have only self driver rectifier calculation, if I calculate the no of mosfet with is formulas, i get value like <0.5, but in the design 2 mosfets are used.

Is there any separate power loss calculation for control driven sync rectification?