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METHOD AND APPARATUS PROVIDING DEEP DIMMING OF SOLID STATE LIGHTING SYSTEMS

  • US 20120181944A1
  • Filed: 09/01/2010
  • Published: 07/19/2012
  • Est. Priority Date: 09/28/2009
  • Status: Active Grant
First Claim
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1. A device for enabling deep dimming of a solid state lighting unit through a power converter, the device comprising:

  • a phase detector configured to receive a voltage signal and to detect rising edges of waveforms of the voltage signal;

    a processing unit configured to initiate a predetermined shutdown period in response to each detected rising edge; and

    a switch configured to provide a control signal that deactivates the power converter during the shutdown period, preventing the power converter from providing power to the solid state light unit during the shutdown period.

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