21W standby power supply designed with TNY280P, with power adapter circuit diagram, bill of materials, specification file, PCB layout

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Summary:

This engineering report describes a universal input 5 V, 4 A power adapter based on the TinySwitch-III family of TNY280P devices. Although used as a power supply for a personal computer (PC) as an auxiliary or bias supply, this design can also be used as a general evaluation platform for a TinySwitch-III device.

This document includes 21W standby power specifications, circuit diagrams, bill of materials, transformer specifications, printed circuit board layout, and performance data.

PCB physical map of 21W standby power supply

21W standby power supply circuit diagram

PCB layout of 21W standby power supply

21W standby power supply component list

See the uploading documentation for details (click to download)