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12V/12W PSR Flyback Reference Design

PMP20634

Overview

The PMP20634 reference design is an isolated DCM flyback design that provides a universal AC line input from 85V to 265V and produces a 12V output capable of handling a 12W load. The design uses the UCC28730 controller to achieve ultra-low standby power at no load. It achieves 85% efficiency in high and low voltage lines and measures 1 x 3 inches on a 2-layer circuit board.

characteristic

● Universal input, 85V AC to 265V AC
● Achieves 85% efficiency in low and high voltage lines
● Provide optional isolated disabling circuit
● Primary side adjustment enables simple design
● 2-layer circuit board, 1oz copper, 1 x 3 inches

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Design Files

Documentation

PMP20634 Test Results

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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 19:02:44

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