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LED lamp power management system and method

United States Patent

8,400,071
March 19, 2013
View the Complete Patent at the US Patent & Trademark Office
An LED lamp power management system and method including an LED lamp having an LED controller 58; a plurality of LED channels 60 operably connected to the LED controller 58, each of the plurality of LED channels 60 having a channel switch 62 in series with at least one shunted LED circuit 83, the shunted LED circuit 83 having a shunt switch 68 in parallel with an LED source 80. The LED controller 58 reduces power loss in one of the channel switch 62 and the shunt switch 68 when LED lamp electronics power loss (P.sub.loss) exceeds an LED lamp electronics power loss limit (P.sub.lim); and each of the channel switches 62 receives a channel switch control signal 63 from the LED controller 58 and each of the shunt switches 68 receives a shunt switch control signal 69 from the LED controller 58.
Gaines; James (Glen Ellyn, NY), Clauberg; Bernd (Schaumburg, IL), Van Erp; Josephus A. M. (Asten, NL)
Koninklijke Philips Electronics N.V. (Eindhoven, NL)
12/ 746,540
20100244707
December 2, 2008
This invention was made with United States government support awarded by the U.S. Department of Energy Contract Number DE-FC26-05NT42342. The United States government has certain rights in this invention.