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20 W Power Factor Corrected, Non-Isolated, TRIAC Dimmable LED Driver

20 W Power Factor Corrected, Non-Isolated, TRIAC Dimmable LED Driver

This document describes a non-isolated, high power factor (PF), TRIAC dimmable LED driver designed to drive a nominal LED string voltage of 96V at 210 mA from a high line input voltage range of 195 VAC to 265 VAC (50 Hz typical). The LED driver utilizes the LYT4326E from the LYTSwitch-4 family of ICs. The topology used is a single-stage non-isolated buck boost that meets constant current regulation, and dimming requirements for this design.

 

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