EP4623645A1 - Dispositif d'éclairage à del - Google Patents

Dispositif d'éclairage à del

Info

Publication number
EP4623645A1
EP4623645A1 EP23806342.4A EP23806342A EP4623645A1 EP 4623645 A1 EP4623645 A1 EP 4623645A1 EP 23806342 A EP23806342 A EP 23806342A EP 4623645 A1 EP4623645 A1 EP 4623645A1
Authority
EP
European Patent Office
Prior art keywords
led
voltage
temperature
control unit
series
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.)
Pending
Application number
EP23806342.4A
Other languages
German (de)
English (en)
Inventor
Hrishikesh Bhagwat
Christian Schmitz
Thomas GEISTERT
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.)
Elmos Semiconductor SE
Original Assignee
Elmos Semiconductor SE
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 Elmos Semiconductor SE filed Critical Elmos Semiconductor SE
Publication of EP4623645A1 publication Critical patent/EP4623645A1/fr
Pending legal-status Critical Current

Links

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
    • H05B45/28—Controlling the colour of the light using temperature feedback
    • 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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines

Definitions

  • LED lighting devices are particularly popular in the automotive industry. When supplying power to LEDs, however, it should be noted that their forward voltages take on different values depending on the operating temperature. For example, the forward voltage of an LED emitting red light is around 1.5 volts to 1.6 volts when warm or hot, while it can have a value of around 2.2 volts when cold. The forward voltage, which decreases by around 0.6 volts during operation, must therefore be compensated for in the voltage supply of the LED and its power source, which are connected in series.
  • the LED lighting device can be provided with a second LED with a forward voltage whose temperature dependence is different from that of the forward voltage of the first LED and/or whose operating temperature is different from that of the first LED, a second current source assigned to the second LED, wherein the second LED and the current source assigned to it are connected in series and this series connection is parallel to the series connection of the first LED and the first current source assigned to it, and a switching device between the two series connections and the voltage control unit for selectively connecting one of the two series connections to the voltage control unit, wherein the voltage control unit can adjust the size of the output voltage depending on the parameter representing the temperature of the LED of the series connection connected to the voltage control unit via the switching device and the voltage control unit outputs the output voltage compensating for a temperature-dependent change in the forward voltage of said LED.
  • a third LED channel which has one or more third LEDs and a third power source associated with this or these.
  • an RGB lighting device could be provided.
  • the voltage control unit is designed as a DC/DC converter. This converter is then supplied with the parameter representing the current operating temperature of the LED of the respective channel, corresponding to the currently "activated" LED channel, so that the voltage compensation by the voltage control unit delivers the "right" output voltage for the respective channel.
  • the voltage control unit can therefore be designed both as a DC/DC converter and as a linear voltage regulator. It is not absolutely necessary to have several voltage control units, for example one for each LED channel.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne un dispositif d'éclairage à DEL qui est pourvu de bornes de tension d'alimentation pour la connexion à une source d'alimentation en tension (24) qui fournit une tension d'alimentation et avec une première DEL (12) ayant une tension directe, dont la dépendance à la température est connue. Le dispositif d'éclairage à DEL comprend également une source d'alimentation (14) pour fournir un courant de fonctionnement pour la première DEL (12) et a une unité de commande de tension (18) avec deux bornes de sortie (16', 16'') entre lesquelles une tension de sortie pouvant être commandée est appliquée. La première DEL (12), la source d'alimentation (14) et l'unité de commande de tension (18) sont connectées en série entre les bornes d'alimentation en tension de la source d'alimentation en tension (24). La tension de sortie entre les bornes de sortie (16', 16'') peut être commandée par l'unité de commande de tension (18) en fonction d'un paramètre qui est obtenu sur la base de données de fonctionnement actuelles de la première DEL (12) et représente la température de la première DEL (12), et par conséquent le changement dépendant de la température dans la tension directe de la première DEL peut être compensé.
EP23806342.4A 2022-11-23 2023-11-21 Dispositif d'éclairage à del Pending EP4623645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22209101 2022-11-23
PCT/EP2023/082491 WO2024110435A1 (fr) 2022-11-23 2023-11-21 Dispositif d'éclairage à del

Publications (1)

Publication Number Publication Date
EP4623645A1 true EP4623645A1 (fr) 2025-10-01

Family

ID=88837523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23806342.4A Pending EP4623645A1 (fr) 2022-11-23 2023-11-21 Dispositif d'éclairage à del

Country Status (3)

Country Link
EP (1) EP4623645A1 (fr)
DE (1) DE112023004862A5 (fr)
WO (1) WO2024110435A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6441558B1 (en) 2000-12-07 2002-08-27 Koninklijke Philips Electronics N.V. White LED luminary light control system
US7202608B2 (en) * 2004-06-30 2007-04-10 Tir Systems Ltd. Switched constant current driving and control circuit
DE102005028403B4 (de) 2005-06-20 2013-11-21 Austriamicrosystems Ag Stromquellenanordnung und Verfahren zum Betreiben einer elektrischen Last
JP2008134288A (ja) * 2006-11-27 2008-06-12 Sharp Corp Ｌｅｄドライバ
WO2008068705A1 (fr) 2006-12-06 2008-06-12 Nxp B.V. Source de tension commandée pour commandes de led
DE102006059355A1 (de) 2006-12-15 2008-06-19 Robert Bosch Gmbh Ansteuerungseinrichtung und Verfahren zum Betrieb wenigstens einer Reihenschaltung von Leuchtdioden
US8174197B2 (en) * 2009-04-09 2012-05-08 Ge Lighting Solutions Llc Power control circuit and method
EP2293165B1 (fr) 2009-09-02 2018-01-17 ams AG Plusieurs sources actuelles et procédé de régulation du courant
TWI425872B (zh) 2010-09-03 2014-02-01 Power Forest Technology Corp 發光二極體驅動裝置
DE102013201915A1 (de) 2012-10-31 2014-05-15 Tridonic Jennersdorf Gmbh Verfahren und Anordnung zur Steuerung von LEDs
DE102017116647B4 (de) 2017-07-24 2022-06-09 Melexis Technologies Nv Kalibrierung der Versorgungsspannung für Beleuchtungssysteme

Also Published As

Publication number Publication date
WO2024110435A1 (fr) 2024-05-30
DE112023004862A5 (de) 2025-09-04

Similar Documents

Publication Publication Date Title
DE102017110195B4 (de) Led-matrixtreiber mit geschalteten kondensatoren
EP2474200B1 (fr) Fonctionnement de led à modulation d'impulsions
DE102007006438B4 (de) Schaltung zur gleichzeitigen Ansteuerung einer Anordnung gleichartiger Verbraucher
DE112018005231B4 (de) Oled-lichtquellen-treibersteuerschaltung und oled-lampe
DE102010008275B4 (de) Vorrichtung zur Energieversorgung von mehreren LED-Einheiten
DE102008030365A1 (de) Einrichtung zur Ansteuerung von in einem Array angeordneten Einzellichtquellen
DE102012108965B4 (de) Stromquelle mit verbesserter Dimmvorrichtung
DE102008029816A1 (de) Schaltung zur Dimmung einer Lampe und zugehöriges Verfahren
DE102013201766A1 (de) Beleuchtungseinrichtung und Verfahren zum Betreiben einer Beleuchtungseinrichtung
DE102012205349A1 (de) Schaltungsanordnung für eine LED-Lampe, LED-Lampe und entsprechendes Verfahren
DE102013207245B4 (de) Ansteuerung von Halbleiterleuchtelementen sowie Lampe, Leuchte oder Leuchtsystem mit einer solchen Ansteuerung
DE102013221033A1 (de) Lichtquellenmodul, Netzgerät zum Betreiben eines derartigen Lichtquellenmoduls sowie Beleuchtungsanlage
EP1858301A1 (fr) Système et procédé d'éclairage à LED pour produire une séquence de couleurs prédéterminée
DE102016123776A1 (de) Lichtemissionsvorrichtung und Leuchte
DE102006037342A1 (de) Schaltung für ein Kraftfahrzeug, insbesondere zur Ansteuerung einer Beleuchtungseinrichtung
WO2020030402A1 (fr) Équipement d'éclairage pouvant fonctionner en tension double
AT17197U1 (de) Farbabstimmbares LED-Modul mit antiparallelen LED-Ketten
DE202015103127U1 (de) LED-Modul mit veränderbarem Farbort und Beleuchtungsgerät mit einem solchen LED-Modul
EP2280585B1 (fr) Procédé de réglage de la commande de plusieurs lampes
DE102012013039B4 (de) Beleuchtungsvorrichtung sowie Verfahren zum Betrieb der Beleuchtungsvorrichtung in einem Dimmbetrieb
WO2024110435A1 (fr) Dispositif d'éclairage à del
AT516860B1 (de) LED-Lichtmodul für eine Beleuchtungseinrichtung für Fahrzeuge
DE102014206434A1 (de) Ansteuerung von Halbleiterleuchtelementen
EP2282610B1 (fr) Procédé de commande d'une lampe
DE20220356U1 (de) Beleuchtungseinrichtung

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20250623

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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ELMOS SEMICONDUCTOR SE

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)