150-VDC - 430-VDC input: multiple output valley-switching flyback reference design

This 10-W non-isolated flyback reference design uses the UCC28742 controller to generate four outputs (5 V at 150 mA: 12 V at 690 mA: 15 V at 80 mA: 18 V at 20 mA). The controller provides constant-voltage and constant-current regulation. Transistors are used in place of an optocoupler feedback circuit to reduce the overall BOM cost.

150-VDC - 430-VDC input to four outputsProtection functions: over voltage: low line: over current and short circuitResonant valley switching for reduced switching lossesTested design with available design files and test report