Method for driving LED

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United States of America Patent

PATENT NO 9648680
SERIAL NO

15055441

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Abstract

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Method and means for driving one or more LEDs. The method includes turning a power switch on to provide current through an inductor and the power switch, measuring voltseconds of the LEDs at a cycle time, comparing the measured voltseconds to a reference signal at an end of the cycle time, generating a signed discrete logical signal based on a difference between the measured voltseconds and the reference signal, and generating a control signal using the signed discrete logical signal to regulate a peak current through the power switch by keeping the cycle time voltseconds substantially constant. The reference signal may be proportional to a set average LED voltage.

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Patent Owner(s)

  • CHEMTRON RESEARCH LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rodriguez, Harry Gilroy, US 69 5558
Shteynberg, Anatoly San Jose, US 74 6228

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