EP2427033A3 - Bypass-Schaltkreis für seriell gekoppelte lichtemittierende Dioden und zugehörige Betriebsverfahren - Google Patents

Bypass-Schaltkreis für seriell gekoppelte lichtemittierende Dioden und zugehörige Betriebsverfahren Download PDF

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Publication number
EP2427033A3
EP2427033A3 EP11180344A EP11180344A EP2427033A3 EP 2427033 A3 EP2427033 A3 EP 2427033A3 EP 11180344 A EP11180344 A EP 11180344A EP 11180344 A EP11180344 A EP 11180344A EP 2427033 A3 EP2427033 A3 EP 2427033A3
Authority
EP
European Patent Office
Prior art keywords
led
associated methods
light emitting
emitting diodes
coupled light
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.)
Granted
Application number
EP11180344A
Other languages
English (en)
French (fr)
Other versions
EP2427033B1 (de
EP2427033A2 (de
Inventor
Eric Yang
Kaiwei Yao
Frank Xi
Zhengwei Zhang
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.)
Monolithic Power Systems Inc
Original Assignee
Monolithic Power Systems Inc
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
Priority claimed from CN2010102859577A external-priority patent/CN101969720B/zh
Priority claimed from US13/051,437 external-priority patent/US8354799B2/en
Application filed by Monolithic Power Systems Inc filed Critical Monolithic Power Systems Inc
Publication of EP2427033A2 publication Critical patent/EP2427033A2/de
Publication of EP2427033A3 publication Critical patent/EP2427033A3/de
Application granted granted Critical
Publication of EP2427033B1 publication Critical patent/EP2427033B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
    • 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
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
  • Electronic Switches (AREA)
EP11180344.1A 2010-09-07 2011-09-07 Bypass-Schaltkreis für seriell gekoppelte lichtemittierende Dioden und zugehörige Betriebsverfahren Active EP2427033B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US38064610P 2010-09-07 2010-09-07
CN2010102859577A CN101969720B (zh) 2010-09-15 2010-09-15 Led旁路控制电路和控制方法
US13/051,437 US8354799B2 (en) 2010-09-07 2011-03-18 Bypass circuitry for serially coupled light emitting diodes and associated methods of operation

Publications (3)

Publication Number Publication Date
EP2427033A2 EP2427033A2 (de) 2012-03-07
EP2427033A3 true EP2427033A3 (de) 2012-05-23
EP2427033B1 EP2427033B1 (de) 2014-11-12

Family

ID=44534168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11180344.1A Active EP2427033B1 (de) 2010-09-07 2011-09-07 Bypass-Schaltkreis für seriell gekoppelte lichtemittierende Dioden und zugehörige Betriebsverfahren

Country Status (1)

Country Link
EP (1) EP2427033B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6145927B2 (ja) 2012-06-01 2017-06-14 パナソニックＩｐマネジメント株式会社 点灯装置および車両用前照灯
JP6030922B2 (ja) * 2012-06-11 2016-11-24 株式会社小糸製作所 光源制御装置
US11296529B2 (en) 2018-05-21 2022-04-05 Scandinova Systems Ab Output rectifier and arrangement comprising an output rectifier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090085489A1 (en) * 2007-09-28 2009-04-02 Chunghwa Picture Tubes, Ltd. Circuit and method for driving and controling light source
WO2009138907A2 (en) * 2008-05-13 2009-11-19 Nxp B.V. Detection of failures within lighting devices
WO2010034739A1 (de) * 2008-09-24 2010-04-01 Hella Kgaa Hueck & Co. VERFAHREN ZUM BETRIEB EINER REIHENSCHALTUNG VON MINDESTENS ZWEI LED's

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7800876B2 (en) * 2006-01-09 2010-09-21 Microsemi Corp. - Analog Mixed Signal Group Ltd. Fault detection mechanism for LED backlighting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090085489A1 (en) * 2007-09-28 2009-04-02 Chunghwa Picture Tubes, Ltd. Circuit and method for driving and controling light source
WO2009138907A2 (en) * 2008-05-13 2009-11-19 Nxp B.V. Detection of failures within lighting devices
WO2010034739A1 (de) * 2008-09-24 2010-04-01 Hella Kgaa Hueck & Co. VERFAHREN ZUM BETRIEB EINER REIHENSCHALTUNG VON MINDESTENS ZWEI LED's

Also Published As

Publication number Publication date
EP2427033B1 (de) 2014-11-12
EP2427033A2 (de) 2012-03-07

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