Driving circuit for a light emitting diode lighting apparatus
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United States of America Patent
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Jun 30, 2015
Grant Date -
Dec 26, 2013
app pub date -
Mar 7, 2011
filing date -
Dec 24, 2010
priority date (Note) -
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Abstract
A driving circuit for a light emitting diode lighting apparatus includes a driving data memory device in which central portion driving data for driving the light emitting diodes are separated into many sections within one cycle of the driving power; a drive controller for reading the central driving data, charging driving data, and outer driving data stored in the driving data memory device; a first D/A converter for converting digital central driving data and outer driving data output from the drive controller to analog signals, and a second D/A converter for converting charging driving data to an analog signal; a static current driving device having static current driving devices respectively connected to tabs of light emitting diodes according to an output signal of the first D/A converter; and a charging static current driving device for charging the charging capacitor according to the output signal from the second D/A converter.
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