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...

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Bibliographische Detailangaben
Hauptverfasser:	HONTELE, Bertrand, ZIJLMAN, Theo, KAHLMAN, Henricus
Format:	Patent
Sprache:	eng ; fre
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. La présente invention concerne une diode électroluminescente, DEL, un circuit d'attaque conçu pour commander au moins une DEL, ledit circuit d'attaque de DEL comprenant un redresseur conçu pour recevoir une tension d'alimentation alternative et fournir une tension de sortie continue à ladite DEL, une branche de régulation de tension conçue pour commander une tension de DEL fournie à ladite DEL, par l'intermédiaire d'une ligne d'alimentation, ladite branche de régulation de tension étant conçue pour recevoir ladite tension continue en provenance dudit redresseur, ladite branche de régulation de tension comprenant, un condensateur conçu pour fournir ladite tension de DEL à ladite DEL, un limiteur de courant, connecté en série audit condensateur, et conçu pour charger ledit condensateur, fournissant ainsi ladite tension de DEL et un circuit de rétroaction conçu pour commander la charge dudit condensateur par ledit limiteur de courant, et ainsi commander la tension de DEL fournie à ladite DEL, par régulation d'une tension de marge résiduelle minimale présente sur un limiteur de courant de DEL couplé en série avec ladite DEL.