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US 2018/0132316 A1Published application
Inductor-less charge pump, power supply apparatus and led light bulb system
AssigneeASP Technologies
InventorsWai Lee, Calvin Lee
Life of this patent
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Abstract
An inductor-less LED power supply apparatus and method are disclosed which includes a charge pump and current driver.
Claims17
An inductor-less LED power pump including a pair of circuit paths, a first path for driving a voltage charge through a first capacitor to a charge capacitor during a first phase of a cycle from an alternating current power source and a second path for driving a voltage charge through a second capacitor to the charge capacitor during a second phase of the cycle.
An inductor-less light emitting diode (LED) power supply apparatus including:
- (a) an inductor-less power pump operable to receive a signal from an alternating power supply and to maintain a substantially fixed voltage across one or more LEDs;
- and
- (b) a current driver.
An inductor-less method for supplying power to an LED including
- receiving an alternating incoming power supply signal through dual input terminals of an inductor-less charge pump;
- outputting an alternating charge pump signal through a single output terminal of the inductor-less charge pump;
- and
- charging a supply capacitor through the single output terminal of the inductor-less power pump, the supply capacitor operable to supply a substantially constant voltage across one or more LEDs.
1 more element
Dependencies are inferred from the claim text.