LEDS DRIVER

The power supply (120) for LEDs provides power to a LED light source (110) having a variable number of LEDs wired in series and/or in parallel. The power supply (120) uses current and voltage feedback to adjust power to the LEDs and provides protection to the LED light source (110). A feedback contr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TRIPATHI AJAY, CLAUBERG BERND, KHETARPAL ROHIT, NARASIMHAN RAGHURAM, MIN YOUNG KEE
Format:	Patent
Sprache:	eng
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:	The power supply (120) for LEDs provides power to a LED light source (110) having a variable number of LEDs wired in series and/or in parallel. The power supply (120) uses current and voltage feedback to adjust power to the LEDs and provides protection to the LED light source (110). A feedback controller (125) compares sensed current and sensed voltage to a reference signal and generates a feedback signal, which is processed by a power factor corrector (124) to adjust the current flow through the transformer supplying current to the LEDs. A LED control switch (127) clamps a peak of the current to the LEDs to provide further protection to the LED light source (110). A short/open detection circuit (130) indicates any detection of a "LED outage" of the LED light source (110).