EP 2656687 B1 20160713 - DRIVING APPARATUS FOR LED
Title (en)
DRIVING APPARATUS FOR LED
Title (de)
LED-BETRIEBSGERÄT
Title (fr)
APPAREIL DE COMMANDE DE DEL
Publication
Application
Priority
- DE 102010063985 A 20101222
- EP 2011073640 W 20111221
Abstract (en)
[origin: WO2012085118A1] In order to improve the efficiency in the operation of LED arrangements connected in series, an LED operating arrangement (1, 2, 3) is proposed, the LED arrangements (LEDi, i = 1...n) each having a first connection and a second connection, and the series circuit of the LED arrangements being connected to a supply voltage (VN), a bypass arrangement (20i, i = a...n-1) being associated with each of a plurality of LED arrangements (LEDi, i = 2...n) in such a way that a bypass connection of each bypass arrangement is connected to a connection of the LED arrangement, and furthermore each bypass arrangement has at least one gate (S, S2) and bypasses the associated LED arrangement (LEDi, i = 2...n) in an operating state. The LED operating arrangement according to the invention is characterized in that a gate (S) of each bypass arrangement (20i, i = a...n-1) is connected to an associated current sensor (100a...n-1), which is designed to detect a current flow through an LED arrangement (LEDi, i = 1...n-1) that is arranged adjacent to the LED arrangement (LEDi, i = 2...n) that is associated with each bypass arrangement (20i, i = a...n-1), wherein each bypass arrangement is furthermore designed as a controllable resistor. The invention further relates to a method for operating a plurality of LED arrangements arranged in series.
IPC 8 full level
H05B 44/00 (2022.01)
CPC (source: EP)
H05B 45/48 (2020.01)
Citation (examination)
US 2009230883 A1 20090917 - HAUG EBERHARD [DE]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012085118 A1 20120628; DE 102010063985 A1 20120628; EP 2656687 A1 20131030; EP 2656687 B1 20160713
DOCDB simple family (application)
EP 2011073640 W 20111221; DE 102010063985 A 20101222; EP 11802418 A 20111221