A LIGHT EMITTING DIODE, LED, DRIVER ARRANGED FOR DRIVING AT LEAST ONE LED, AS WELL AS A CORRESPONDING LED BASED LIGHTING DEVICE, INTEGRATED CIRCUIT, IC, AND METHOD

A LIGHT EMITTING DIODE, LED, DRIVER ARRANGED FOR DRIVING AT LEAST ONE LED, AS WELL AS A CORRESPONDING LED BASED LIGHTING DEVICE, INTEGRATED CIRCUIT, IC, AND METHOD

A Light Emitting Diode, LED, driver arranged for driving at least one LED, said LED driver comprising a rectifier arranged for receiving an Alternating Current, AC, supply voltage and for providing an output Direct Current, DC, voltage to said at least one LED, a voltage regulating branch arranged f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KAHLMAN, Henricus, Marius, Joseph, Maria, HONTELE, Bertrand, Johan, Edward, ZIJLMAN, Theo, Gerrit
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:A Light Emitting Diode, LED, driver arranged for driving at least one LED, said LED driver comprising a rectifier arranged for receiving an Alternating Current, AC, supply voltage and for providing an output Direct Current, DC, voltage to said at least one LED, a voltage regulating branch arranged for controlling an LED voltage provided to said at least one LED, via a supply line, wherein said voltage regulating branch is arranged for receiving said DC voltage from said rectifier, wherein said voltage regulating branch comprises, a capacitor arranged for providing said LED voltage to said at least one LED, a current limiter, connected in series with said capacitor, and arranged for charging said capacitor thereby providing said LED voltage and a feedback circuit arranged for controlling the charging of said capacitor by said current limiter, and thereby controlling the LED voltage provided to said at least one LED, by regulating a minimum residual headroom voltage present on a LED current limiter coupled in series with said at least one LED.