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Aerospace

LED Driver IC Efficiently Manages TRIACs

22 July 2016

Power Integrations has announced its LYTSwitch™-7 single-stage, non-isolated, TRIAC-dimmable, buck topology LED driver IC family. Capable of delivering up to 22 W without a heatsink in a very small SO-8 footprint, these high-efficiency devices are suitable for bulbs, tubes and fixtures.

LYTSwitch™-7 buck topology LED driver IC LYTSwitch™-7 buck topology LED driver IC

LYTSwitch-7™ designs do not require bleeders. They employ simple, passive damping for TRIAC management and an off-the-shelf, single-winding inductor, reducing component count to just 20, as compared to approximately 35 parts for typical dimmable LED driver boards.

LYTSwitch-7™ ICs deliver a phase-cut (TRIAC) dimming solution with a wide dimming range and monotonic dimming response. The LED drivers enable efficiency of greater than 86%—around 2% higher than conventional dimmable products—with high PF, accurate regulation and comprehensive protection. They suit low- or high-line input as well as wide-range universal-input designs for U.S. commercial lighting applications, which operate from 90 VAC to 305 VAC with TRIAC dimming enabled in low-line installations.

Like all Power Integrations LED drivers, LYTSwitch-7™ ICs have a host of protection features. Samples are available now. Devices are priced at 33 cents each in 10,000-piece quantities.



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