LED DRIVER

A circuit comprising an LED light source and a power supply arranged to power to the LED light source, said power supply comprising: an AC/DC converter arranged to convert an AC voltage into a DC voltage; a power converter comprising a transformer (123) and a power factor corrector, wherein the powe...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KHETARPAL, Rohit, TRIPATHI, Ajay, MIN, Young-Kee, NARASIMHAN, Raghuram, CLAUBERG, Bernd
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	A circuit comprising an LED light source and a power supply arranged to power to the LED light source, said power supply comprising: an AC/DC converter arranged to convert an AC voltage into a DC voltage; a power converter comprising a transformer (123) and a power factor corrector, wherein the power factor corrector is arranged to control the transformer to generate a regulated power from the voltage provided by the AC/DC converter, and to supply the regulated power to the LED light source, the regulated power including a LED light source voltage and a LED light source current; a voltage sensor arranged to provide a sensed voltage indicative of a magnitude of the LED light source voltage, a current sensor arranged to provide a sensed current indicative of a magnitude of the LED light source current, and a feedback controller arranged to provide a feedback signal to the power converter based on the sensed voltage and sensed current; wherein the generation of the regulated power is controlled by the feedback signal.