GB2434929B - Circuit and method for controlling an LED array - Google Patents

Circuit and method for controlling an LED array

Info

Publication number
GB2434929B
GB2434929B GB0702297A GB0702297A GB2434929B GB 2434929 B GB2434929 B GB 2434929B GB 0702297 A GB0702297 A GB 0702297A GB 0702297 A GB0702297 A GB 0702297A GB 2434929 B GB2434929 B GB 2434929B
Authority
GB
United Kingdom
Prior art keywords
controlling
circuit
led array
led
array
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.)
Expired - Fee Related
Application number
GB0702297A
Other versions
GB2434929A (en
GB0702297D0 (en
Inventor
Klaus-Dieter Grebner
Volker Marr
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.)
Lear Corp
Original Assignee
Lear Corp
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 Lear Corp filed Critical Lear Corp
Publication of GB0702297D0 publication Critical patent/GB0702297D0/en
Publication of GB2434929A publication Critical patent/GB2434929A/en
Application granted granted Critical
Publication of GB2434929B publication Critical patent/GB2434929B/en
Expired - Fee Related 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]
    • H05B45/40—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
    • H05B33/08—
    • H05B33/0836—
    • 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]
    • H05B45/30—Driver circuits
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/395—Linear regulators
    • 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
    • H05B45/52—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a parallel array 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]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
GB0702297A 2006-02-07 2007-02-07 Circuit and method for controlling an LED array Expired - Fee Related GB2434929B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006005521A DE102006005521B3 (en) 2006-02-07 2006-02-07 LED-array controlling method for e.g. motor vehicle`s tail lamp, involves increasing voltage until preset current flows through lines, such that lines are switched on and off by clocked control of switches to provide effective current

Publications (3)

Publication Number Publication Date
GB0702297D0 GB0702297D0 (en) 2007-03-14
GB2434929A GB2434929A (en) 2007-08-08
GB2434929B true GB2434929B (en) 2008-05-07

Family

ID=37891418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0702297A Expired - Fee Related GB2434929B (en) 2006-02-07 2007-02-07 Circuit and method for controlling an LED array

Country Status (2)

Country Link
DE (1) DE102006005521B3 (en)
GB (1) GB2434929B (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006037342B4 (en) 2006-08-08 2013-07-18 Johnson Controls Automotive Electronics Gmbh Circuit for a motor vehicle, in particular for controlling a lighting device
WO2009012817A1 (en) * 2007-07-25 2009-01-29 Osram Gesellschaft mit beschränkter Haftung Method and circuit configuration for two-stage control of semiconductor light sources
KR20090018472A (en) 2007-08-17 2009-02-20 삼성전자주식회사 Backlight unit, display apparatus comprising the same and control method thereof
WO2010015277A1 (en) * 2008-08-04 2010-02-11 Osram Gesellschaft mit beschränkter Haftung Multi-led lighting device
DE102008039526B4 (en) * 2008-08-23 2016-07-14 Hella Kgaa Hueck & Co. Method for powering an LED array and circuit arrangement for carrying out the method and a lighting unit
EP2197243A1 (en) * 2008-12-05 2010-06-16 Delphi Technologies, Inc. Test method for light diodes
DE102009018428A1 (en) * 2009-04-22 2010-10-28 Vishay Electronic Gmbh Circuit for a light-emitting diode arrangement and light-emitting diode module
KR101696749B1 (en) * 2010-01-25 2017-01-17 삼성디스플레이 주식회사 Backlight assembly and display apparatus having the same
US20120319603A1 (en) * 2010-03-01 2012-12-20 Hella Kgaa Method to supply power to an led array as well as the circuit arrangement for implementing the method
DE102010049716A1 (en) 2010-10-26 2012-04-26 Automotive Lighting Reutlingen Gmbh Composite of an on-board control unit and at least one light control device of a motor vehicle
DE102010060857B4 (en) 2010-11-29 2024-01-11 HELLA GmbH & Co. KGaA Circuit arrangement with a light-emitting diode field, control and/or regulating means for the light-emitting diode field and method for operating such a circuit arrangement
DE102012222958A1 (en) * 2012-12-12 2014-06-12 Automotive Lighting Reutlingen Gmbh Method and device for operating a lighting device of a motor vehicle
DE102013220397A1 (en) * 2013-10-10 2015-04-16 Ruling Technologies Sdn. Bhd. Method and control device for operating at least one light source
DE102013111510A1 (en) * 2013-10-18 2015-04-23 Hella Kgaa Hueck & Co. Circuit and method for driving LEDs
DE102014202363A1 (en) 2014-02-10 2015-08-13 Tridonic Gmbh & Co Kg Voltage converter for the operation of bulbs
AT14315U1 (en) * 2014-02-12 2015-08-15 Tridonic Gmbh & Co Kg Voltage converter for the operation of bulbs
EP3185649B1 (en) * 2015-12-23 2020-04-01 SMR Patents S.à.r.l. Control circuit to control at least one lighting device in a vehicle
US10257900B2 (en) 2015-09-08 2019-04-09 Signify Holding B.V. Determining property of unchanged load device
DE102016213192A1 (en) * 2016-07-19 2018-01-25 BSH Hausgeräte GmbH Reduction of brightness differences in the operation of a lighting device of a household appliance with multiple bulbs
EP3280228B1 (en) * 2016-08-01 2019-07-10 OSRAM GmbH Lighting system and related method of operating a lighting system
DE102017125173B4 (en) * 2017-10-26 2022-09-08 Preh Gmbh Method for checking the function of several light sources controlled by pulse width modulation
US10440786B1 (en) 2018-05-09 2019-10-08 Infineon Technologies Ag Control circuit and techniques for controlling a LED array
DE102019103660A1 (en) * 2019-02-13 2020-08-13 Vossloh-Schwabe Deutschland Gmbh Operating circuit for operating several loads
DE102020106270A1 (en) 2020-03-09 2021-09-09 HELLA GmbH & Co. KGaA Control and / or regulating means, circuit arrangement and method for controlling and / or monitoring light-emitting diodes in a light-emitting diode field

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020140380A1 (en) * 2001-03-28 2002-10-03 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Drive circuit for an LED array
US20040036418A1 (en) * 2002-08-21 2004-02-26 Rooke Alan Michael Closed loop current control circuit and method thereof
WO2005001791A1 (en) * 2003-06-30 2005-01-06 Koninklijke Philips Electronics N.V. Single led driver for a traffic light

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6362578B1 (en) * 1999-12-23 2002-03-26 Stmicroelectronics, Inc. LED driver circuit and method
US6498440B2 (en) * 2000-03-27 2002-12-24 Gentex Corporation Lamp assembly incorporating optical feedback
CA2336497A1 (en) * 2000-12-20 2002-06-20 Daniel Chevalier Lighting device
DE10137338A1 (en) * 2001-07-31 2003-02-20 Hella Kg Hueck & Co Illumination device for motor vehicle lighting systems, has light control module with D.C. converter for converting on-board electrical system voltage to constant LED operating voltage for controlling LED arrangements
US6864641B2 (en) * 2003-02-20 2005-03-08 Visteon Global Technologies, Inc. Method and apparatus for controlling light emitting diodes
DE602004008840T2 (en) * 2003-07-07 2008-06-19 Rohm Co., Ltd., Kyoto A load driving device and portable device using such load driving device
DE102005012625B4 (en) * 2005-03-18 2009-01-02 Infineon Technologies Ag Method and circuit arrangement for controlling LEDs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020140380A1 (en) * 2001-03-28 2002-10-03 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Drive circuit for an LED array
US20040036418A1 (en) * 2002-08-21 2004-02-26 Rooke Alan Michael Closed loop current control circuit and method thereof
WO2005001791A1 (en) * 2003-06-30 2005-01-06 Koninklijke Philips Electronics N.V. Single led driver for a traffic light

Also Published As

Publication number Publication date
GB2434929A (en) 2007-08-08
DE102006005521B3 (en) 2007-05-16
GB0702297D0 (en) 2007-03-14

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20090129 AND 20090204

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110207