11 W TRIAC dimmable PFC non-isolated buck-boost LED driver

This design example report presents an 11 W TRIAC dimmable high efficiency, power factor corrected, non-isolated buck-boost LED driver employing LYTSwitch™-3 LYT3316D. This design operates in an input voltage ranging from 90 VAC to 132 VAC and delivers an output of 72 V at 155 mA. It features single stage power factor correction, accurate constant LED current (CC) regulation, low cost and low component count for compact PCB solution, and integrated protection features.

The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, design spreadsheet and performance data.