Apparatus and methods for supplying power
AssigneeSignify Holding B.V.
InventorsMilen Moussakov, Gregory Bernard Sheehan
Life of this patent
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Abstract
A switched capacitor array having a plurality of capacitors arranged in a plurality of branches having different numbers of capacitors, and a plurality of switches connected to selectively couple the capacitors across the input or the output may be used for powering a variety of loads. A switched LED array may be dynamically configured based on a voltage supplied thereto, which may be supplied by a switched capacitor array. A lighting apparatus may be provided with first and second blocks, each block comprising a switched capacitor array, a switched LED array, and a control system.
Claims9
An apparatus comprising:
- a switched LED array comprising a plurality of strings of LEDs, each string selectably connectable in parallel across an input and comprising a selectable number of series connected LEDs, wherein the plurality of strings comprise strings with different selectable numbers of series connected LEDs;
- and
- a control system configured to dynamically vary a number of active strings connected in parallel across the input and the selectable number of series connected LEDs in the active strings based on a voltage level at the input by connecting selected strings of LEDs to connected capacitors across the Input to be charged, wherein a number of connected capacitors in the selected branches varies based on the voltage level at the input, and connecting charged capacitors across an output to be discharged.
Dependencies are inferred from the claim text.