36 to 75Vin 22V-32V/5A Output Active Clamp Forward Reference Design (PMP9127)

This reference design generates a 28V/5A output from a 36V to 75V telecom input. The UCC2897A controls an active clamp forward converter power stage. The output is adjustable within a 22V to 32V range. The UCC27511 is used to drive synchronous rectifiers, and provides for a highly efficient design. This design is laid out on a circuit board with pin placement that is compatible with a 1/4 brick footprint and achieves efficiencies over to 94%. It uses only surface mount components, including ceramic output capacitors.

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36 to 75Vin 22V-32V/5A Output Active Clamp Forward Reference Design PMP9127