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DER-484 - 300 W forward power supply

DER-484 - 300 W Forward Power Supply

Overview

This engineering report describes a 61 V (nominal), 280 W power supply reference design operating at 90-264 VAC. A 5 V, 4 A backup output is also available. The main output of the power supply is designed with constant voltage/constant current characteristics, suitable for battery charger applications. The design is based on PFS7528H and TFS7707H, and the main preamp operating frequency is 66 kHz.

Blockdiagram

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-22 03:01:09

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