DER-881 - 14.5 W Dual Output Isolated Flyback Power Supply Using TinySwitch-4

DER-881 - 14.5 W Dual-Output Isolated Flyback Power Supply Using TinySwitch-4

Overview

This engineering report describes an isolated flyback converter designed to provide nominal output voltages of 12 V, 1 A and 5 V, 500 mA over a wide input voltage range of 85 VAC to 265 VAC . This adapter uses the TNY289P from the TinySwitch-4 series of ICs and is available in D and K packages on the top layer. The document contains complete power supply specifications, bill of materials, transformer construction, circuit schematic and printed circuit board layout, as well as performance data and electrical waveforms.

Blockdiagram

Design Files

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Update:2025-06-24 04:29:58

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