Mains Dimmable LED Driver Circuits
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United States of America Patent
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Issued Date -
Jun 7, 2012
app pub date -
Dec 7, 2010
filing date -
Dec 7, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of controlling a dimming level of one or more light emitting diodes (“LEDs”) includes receiving a phase cut dimming signal having a pulse width and frequency, generating a PWM signal having a duty cycle and frequency corresponding to the pulse width and frequency, respectively, of the phase cut dimming signal, and controlling a power converter coupled to the one or more LEDs with the generated PWM signal so that the dimming level of the one or more LEDs is a function of the duty cycle of the generated PWM signal. Example circuits for practicing this method and alternative methods are also disclosed.
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