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Current regulator for multimode operation of solid state lighting

  • US 7,852,300 B2
  • Filed: 02/02/2007
  • Issued: 12/14/2010
  • Est. Priority Date: 02/06/2006
  • Status: Expired due to Fees
First Claim
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1. A current regulator for providing a plurality of operating modes for solid state lighting, the current regulator couplable to a DC power supply, the current regulator comprising:

  • a memory to store a plurality of average current parameters; and

    a control circuit coupled to the memory, the control circuit to modulate an energizing cycle time period (“

    T”

    ) for providing power to the solid state lighting in response to a selected average current parameter (“

    a”

    ) of the plurality of average current parameters by determining the energizing cycle time period as proportional to the product of the selected average current parameter and a reset time period (“

    TR

    ) for an inductor current to return to a substantially zero level from a predetermined peak level (T∝



    TR).

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