High power factor LED-based lighting apparatus and methods

High power factor LED-based lighting apparatus and methods

An apparatus and method for a switching power supply (200) for providing power factor correction and an output voltage (32) to at least one LED-based light source (100) via control of a single switch (20), without requiring a voltage regulation feedback control loop associated with the at least one...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LYS, IHOR, A, SHIKH, IGOR
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Beschreibung
Zusammenfassung:An apparatus and method for a switching power supply (200) for providing power factor correction and an output voltage (32) to at least one LED-based light source (100) via control of a single switch (20), without requiring a voltage regulation feedback control loop associated with the at least one LED-based light source during normal operation of the LED-based light source, is disclosed. At least one controller (360) is coupled to the single switch (20) for controlling the single switch using a fixed off time (FOT) control technique.