Back to results
US 12,382,559 B2Granted
Load control device for a light-emitting diode light source
AssigneeLutron Technology Company LLC
InventorsTimothy P. Gredler, Matthew R. Zartman
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLutron Technology Company LLC
InventorsTimothy P. Gredler, Matthew R. Zartman
Estimating the term…
A load control device for controlling the intensity of a lighting load, such as a light-emitting diode (LED) light source, may include a power converter circuit operable to receive a rectified AC voltage and to generate a DC bus voltage, a load regulation circuit operable to receive the bus voltage and to control the magnitude of a load current conducted through the lighting load, and a control circuit operatively coupled to the load regulation circuit for pulse width modulating or pulse frequency modulating the load current to control the intensity of the lighting load to a target intensity. The control circuit may control the intensity of the lighting load by pulse width modulating the load current when the target intensity is above a predetermined threshold and control the intensity of the lighting load by pulse frequency modulating the load current when the target intensity is below the predetermined threshold.
A lighting controller to adjust a luminous output of a light-emitting diode (LED) fixture, comprising:
A method to control luminous output of a light-emitting diode (LED) fixture, the method comprising:
A non-transitory, machine-readable, storage device that includes instructions that, when executed by control circuitry in a light-emitting diode (LED) controller couplable to LED drive circuitry, cause the control circuitry to:
Dependencies are inferred from the claim text.