The PMP5353 reference design provides a non-isolated 3.3V at 40mA and 15V at 2mA from a 120VAC/60Hz input in less than 1 square inch of board space. This design uses the UCC38C44 to control a SEPIC topology. The SEPIC clamping capacitor reduces ringing on the drain of the MOSFET and recaptures leakage energy to improve efficiency. A TPS72901 LDO is used to minimize noise on the 3.3V output.
Download the bill of materials for PMP5353 | Download |
Title | Updated | Type | Size (KB) | |
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PMP5353 REVC SCHEMATIC | 17 Dec 2010 | 50 | ||
PMP5353 REVC BILL OF MATERIALS | 17 Dec 2010 | 19 |