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Driver circuit for solid state light sources

United States Patent

February 16, 2016
View the Complete Patent at the US Patent & Trademark Office
A driver circuit for a light source including one or more solid state light sources, a luminaire including the same, and a method of so driving the solid state light sources are provided. The driver circuit includes a rectifier circuit that receives an alternating current (AC) input voltage and provides a rectified AC voltage. The driver circuit also includes a switching converter circuit coupled to the light source. The switching converter circuit provides a direct current (DC) output to the light source in response to the rectified AC voltage. The driver circuit also includes a mixing circuit, coupled to the light source, to switch current through at least one solid state light source of the light source in response to each of a plurality of consecutive half-waves of the rectified AC voltage.
Palmer; Fred (Danvers, MA), Denvir; Kerry (Cambridge, MA), Allen; Steven (Mason, OH)
13/ 471,650
May 15, 2012
GOVERNMENT LICENSE RIGHTS This invention was made with government support under contract number DE-EE0000611 awarded by the United States Department of Energy. The government has certain rights in the invention.