EP2416624A1 - Schaltungsanordnung und Verfahren zum betreiben mindestens einer ersten und mindestens einer zweiten LED - Google Patents

Schaltungsanordnung und Verfahren zum betreiben mindestens einer ersten und mindestens einer zweiten LED Download PDF

Info

Publication number
EP2416624A1
EP2416624A1 EP11170919A EP11170919A EP2416624A1 EP 2416624 A1 EP2416624 A1 EP 2416624A1 EP 11170919 A EP11170919 A EP 11170919A EP 11170919 A EP11170919 A EP 11170919A EP 2416624 A1 EP2416624 A1 EP 2416624A1
Authority
EP
European Patent Office
Prior art keywords
led
circuit arrangement
output
led3
led1
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11170919A
Other languages
German (de)
English (en)
French (fr)
Inventor
Richard Dilger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Osram GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osram GmbH filed Critical Osram GmbH
Publication of EP2416624A1 publication Critical patent/EP2416624A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/22—Controlling the colour of the light using optical feedback

Definitions

  • the present invention offers the possibility of operating LEDs of different power with one and the same driver. If, for example, the LEDs are not supplied from a battery, but from a variable constant voltage source, for example, by deriving a constant voltage from a mains alternating voltage, the present invention makes it possible to use the different power supply to the LEDs in the boost branch on the one hand and the LEDs in the buck On the other hand, the use of different power LEDs.
  • the LEDs with lower power are preferably arranged in the boost branch.
  • the at least one first LED and the at least one second LED emit radiation in the same wavelength range.
  • the at least one first LED emits radiation in a wavelength range that differs from the wavelength ranges in that the at least one second LED emits radiation.
  • the LEDs in the buck branch can emit the fundamental radiation which is then selected by appropriate selection of the DC supply voltage corrected or modified by the LEDs in the boost branch.
  • the at least one second LED comprises at least two LEDs, wherein the two LEDs emit radiation of different wavelengths.
  • Fig. 3 shows a schematic representation of the dependence of the duty cycle of the input voltage U e for a circuit arrangement according to the invention according to the embodiment of Fig. 2 in curve a) and for a circuit arrangement according to the prior art, which differs from the circuit arrangement according to Fig. 2 characterized in that the LED3 is arranged in series with the LEDs LED1, LED2 between the output terminals A1 and A2.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
EP11170919A 2010-08-02 2011-06-22 Schaltungsanordnung und Verfahren zum betreiben mindestens einer ersten und mindestens einer zweiten LED Withdrawn EP2416624A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010038787A DE102010038787A1 (de) 2010-08-02 2010-08-02 Schaltungsanordnung und Verfahren zum Betreiben mindestens einer ersten und mindestens einer zweiten Led

Publications (1)

Publication Number Publication Date
EP2416624A1 true EP2416624A1 (de) 2012-02-08

Family

ID=44993413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11170919A Withdrawn EP2416624A1 (de) 2010-08-02 2011-06-22 Schaltungsanordnung und Verfahren zum betreiben mindestens einer ersten und mindestens einer zweiten LED

Country Status (3)

Country Link
EP (1) EP2416624A1 (zh)
CN (1) CN102348317A (zh)
DE (1) DE102010038787A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103533710A (zh) * 2013-10-12 2014-01-22 辉芒微电子（深圳）有限公司 一种led驱动器
CN103533711A (zh) * 2013-10-18 2014-01-22 深圳市富满电子有限公司 一种非隔离led驱动电路
FR3020122A1 (fr) * 2014-04-22 2015-10-23 Renault Sas Procede de pilotage d'un feu de signalisation ou d'eclairage a diodes electroluminescentes pour vehicule automobile
US9961748B2 (en) 2016-02-01 2018-05-01 Toshiba Lighting & Technology Corporation Vehicle lighting device and vehicle lamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998030070A1 (en) * 1997-01-03 1998-07-09 Telefonaktiebolaget Lm Ericsson Driver circuit and method of operating the same
DE20220900U1 (de) * 2002-11-07 2004-05-27 Schmeling, Till, Dr.rer.nat. Vorrichtung zur Realisierung zuverlässiger und energiesparender Navigationsleuchten mit LEDs
WO2008041151A2 (en) * 2006-10-06 2008-04-10 Philips Intellectual Property & Standards Gmbh Light element array with controllable current sources and method of operation
US20100109570A1 (en) * 2008-11-06 2010-05-06 Mpj Lighting, Llc Electrical circuit for driving leds in dissimilar color string lengths

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7178971B2 (en) * 2001-12-14 2007-02-20 The University Of Hong Kong High efficiency driver for color light emitting diodes (LED)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998030070A1 (en) * 1997-01-03 1998-07-09 Telefonaktiebolaget Lm Ericsson Driver circuit and method of operating the same
DE20220900U1 (de) * 2002-11-07 2004-05-27 Schmeling, Till, Dr.rer.nat. Vorrichtung zur Realisierung zuverlässiger und energiesparender Navigationsleuchten mit LEDs
WO2008041151A2 (en) * 2006-10-06 2008-04-10 Philips Intellectual Property & Standards Gmbh Light element array with controllable current sources and method of operation
US20100109570A1 (en) * 2008-11-06 2010-05-06 Mpj Lighting, Llc Electrical circuit for driving leds in dissimilar color string lengths

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103533710A (zh) * 2013-10-12 2014-01-22 辉芒微电子（深圳）有限公司 一种led驱动器
CN103533710B (zh) * 2013-10-12 2015-10-28 辉芒微电子（深圳）有限公司 一种led驱动器
CN103533711A (zh) * 2013-10-18 2014-01-22 深圳市富满电子有限公司 一种非隔离led驱动电路
FR3020122A1 (fr) * 2014-04-22 2015-10-23 Renault Sas Procede de pilotage d'un feu de signalisation ou d'eclairage a diodes electroluminescentes pour vehicule automobile
US9961748B2 (en) 2016-02-01 2018-05-01 Toshiba Lighting & Technology Corporation Vehicle lighting device and vehicle lamp
US10212786B2 (en) 2016-02-01 2019-02-19 Toshiba Lighting & Technology Corporation Vehicle lighting device and vehicle lamp

Also Published As

Publication number Publication date
DE102010038787A1 (de) 2012-02-02
CN102348317A (zh) 2012-02-08

Similar Documents

Publication Publication Date Title
EP2420107B1 (de) Leistungsregelung von led, mittels mittelwert des led-stroms und bidirektionaler zähler
DE112010004983B4 (de) Schaltung für den Betrieb von Leuchtdioden (LEDs)
DE102009024611B4 (de) Leistungsschaltung und Beleuchtungsvorrichtung
DE102012100360A1 (de) Lichtquellen-Betriebseinrichtung und Leuchte
WO2010046065A1 (de) Betriebsschaltung für leds
EP2425680B1 (de) Betriebsschaltung für leuchtdioden
DE102011100012A1 (de) Verfahren und Schaltung zur Leistungsfaktorkorrektur
EP2540139B1 (de) Led-spannungsmessung
DE102012108965A1 (de) Stromquelle mit verbesserter Dimmvorrichtung
DE112009002500B4 (de) Betriebsschaltung für LEDs und Verfahren zum Betreiben von LEDs
EP2992735A1 (de) Betriebsschaltung für led
DE102014106869B4 (de) LED-Beleuchtungsvorrichtung und Beleuchtungsgerät
EP2512207B1 (de) Treiberschaltung und Verfahren zum Versorgen einer LED sowie Leuchtmittel
EP2416624A1 (de) Schaltungsanordnung und Verfahren zum betreiben mindestens einer ersten und mindestens einer zweiten LED
EP2294897A1 (de) Schaltungsanordnung und verfahren zum betreiben mindestens einer led
DE102012224346A1 (de) Schaltungsanordnung zum Betreiben von n parallel geschalteten Strängen mit mindestens einer Halbleiterlichtquelle
AT12495U1 (de) Fehlererkennung für leuchtdioden
DE102015205808A1 (de) Schaltungsanordnung zum Betreiben zumindest einer ersten und genau einer zweiten Kaskade von LEDs
AT16163U1 (de) Lampenbetriebsgerät
DE202017002443U1 (de) Schaltungsanordnung zum Betreiben eines Leuchtmittels
EP2777364B1 (de) Verfahren zum betreiben von wenigstens einer led mittels dithering
DE102015121776A1 (de) Beleuchtungsbaugruppe, eine Beleuchtungsbaugruppe verwendende Leuchte und ein die Leuchte verwendendes Bestromungssystem
DE102014206438A1 (de) Schaltungsanordnung zum Betreiben von n Lasten
EP3286988B1 (de) Schaltungsanordnung zum betreiben mindestens eines ersten und eines zweiten led-strangs
WO2012010591A2 (de) Buck-konverter zum bereitstellen eines stroms für mindestens eine led

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A1

Designated state(s): 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

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OSRAM AG

17P Request for examination filed

Effective date: 20120709

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120809