Floating switch replaces flyback, buck, boost converters

The industry's first floating switch architecture simplifies the offline linear drive of LEDs in lamps, downlights and fixtures. The ac-switched matrix technique features the TPS92411 100-V, 2-Ω floating MOSFET switch and produces LED drive current without magnetic components. The architecture is compatible with legacy wall dimmers and delivers a 0.95 power factor and

The floating switch device requires no inductive components for power transfer, eliminating cost and bulk, and simplifying design. The low-frequency, slew-rate controlled switch action produces very little EMI noise. It is offered in a 5-pin SOT-23 package, and an 8-pin PowerPad SOIC package will be available in the first quarter of 2014. Watch a video here.