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DE102006005521B3 - 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 - Google Patents

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 Download PDF

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Publication number
DE102006005521B3
DE102006005521B3 DE102006005521A DE102006005521A DE102006005521B3 DE 102006005521 B3 DE102006005521 B3 DE 102006005521B3 DE 102006005521 A DE102006005521 A DE 102006005521A DE 102006005521 A DE102006005521 A DE 102006005521A DE 102006005521 B3 DE102006005521 B3 DE 102006005521B3
Authority
DE
Germany
Prior art keywords
lines
led
switches
switched
motor vehicle
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
DE102006005521A
Other languages
German (de)
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 GmbH
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
Priority to DE102006005521A priority Critical patent/DE102006005521B3/en
Priority to GB0702297A priority patent/GB2434929B/en
Application granted granted Critical
Publication of DE102006005521B3 publication Critical patent/DE102006005521B3/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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]
    • H05B45/40—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
    • 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]

Landscapes

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)

Abstract

The method involves controlling a voltage that is supplied from a voltage source (4) of a LED-array (2). The voltage is increased until preset desired current flows through LED-lines (6) with a threshold-voltage, in an initializing mode for the lines. The lines are switched on and off by clocked and independent control of switches (9) of the lines to provide an effective current that flows through the lines and that approximately corresponds to its nominal current, where the threshold-voltage of the lines is lower than an operating-voltage. An independent claim is also included for a circuit for controlling an LED-array.
DE102006005521A 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 Expired - Fee Related DE102006005521B3 (en)

Priority Applications (2)

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
GB0702297A GB2434929B (en) 2006-02-07 2007-02-07 Circuit and method for controlling an LED array

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 (1)

Publication Number Publication Date
DE102006005521B3 true DE102006005521B3 (en) 2007-05-16

Family

ID=37891418

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102006005521A Expired - Fee Related 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

Country Status (2)

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

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008017467A1 (en) * 2006-08-08 2008-02-14 Johnson Controls Automotive Electronics Gmbh Circuit for a motor vehicle, in particular for actuating 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
WO2010015277A1 (en) * 2008-08-04 2010-02-11 Osram Gesellschaft mit beschränkter Haftung Multi-led lighting device
DE102008039526A1 (en) * 2008-08-23 2010-02-25 Hella Kgaa Hueck & Co. Current supplying method for LED array in lighting unit i.e. headlight, of motor vehicle, involves controlling adjustable resistors using control electronics based on comparison of measured currents in individual LED branches
DE102009018428A1 (en) * 2009-04-22 2010-10-28 Vishay Electronic Gmbh Circuit for a light-emitting diode arrangement and light-emitting diode module
WO2011107138A1 (en) 2010-03-01 2011-09-09 Hella Kgaa Hueck & Co. Method for supplying current to an led array and circuit arrangement for carrying out the method
DE102010060857A1 (en) 2010-11-29 2012-05-31 Hella Kgaa Hueck & Co. Control and / or regulating means for a light-emitting diode array, circuit arrangement with such a control and / or regulating means and method for operating such a circuit arrangement
EP2744302A1 (en) * 2012-12-12 2014-06-18 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
AT14315U1 (en) * 2014-02-12 2015-08-15 Tridonic Gmbh & Co Kg Voltage converter for the operation of bulbs
US9814113B2 (en) 2014-02-10 2017-11-07 Tridonic Gmbh & Co Kg Voltage converter for operating lamps
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
EP3280228A1 (en) * 2016-08-01 2018-02-07 OSRAM GmbH Lighting system and related method of operating a lighting system
DE102017125173A1 (en) * 2017-10-26 2019-05-02 Preh Gmbh Method for checking the function of a plurality of pulse-width-modulatedly controlled light sources
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
DE102019112006B4 (en) * 2018-05-09 2024-10-17 Infineon Technologies Ag CONTROL CIRCUIT AND TECHNIQUES FOR CONTROLLING AN LED ARRAY

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090018472A (en) 2007-08-17 2009-02-20 삼성전자주식회사 Backlight unit, display device including same and control method thereof
EP2197243A1 (en) * 2008-12-05 2010-06-16 Delphi Technologies, Inc. Test method for light diodes
KR101696749B1 (en) * 2010-01-25 2017-01-17 삼성디스플레이 주식회사 Backlight assembly and display apparatus having the same
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
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

Citations (8)

* Cited by examiner, † Cited by third party
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US6362578B1 (en) * 1999-12-23 2002-03-26 Stmicroelectronics, Inc. LED driver circuit and method
US20020047624A1 (en) * 2000-03-27 2002-04-25 Stam Joseph S. Lamp assembly incorporating optical feedback
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
EP1246511B1 (en) * 2001-03-28 2004-08-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Driver circuit for a LED-array
EP1499165A2 (en) * 2003-07-07 2005-01-19 Rohm Co., Ltd. Load driving device and portable apparatus utilizing such driving device
US6864641B2 (en) * 2003-02-20 2005-03-08 Visteon Global Technologies, Inc. Method and apparatus for controlling light emitting diodes
US20050122064A1 (en) * 2000-12-20 2005-06-09 Gestion Proche Inc., Lighting device
DE102005012625A1 (en) * 2005-03-18 2006-09-28 Infineon Technologies Ag Switch for controlling LED, has switching devices providing currents for diode arrangements, and logic device controlling devices such that current for corresponding arrangement is not provided at same time

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6798152B2 (en) * 2002-08-21 2004-09-28 Freescale Semiconductor, Inc. Closed loop current control circuit and method thereof
US20060152175A1 (en) * 2003-06-30 2006-07-13 Koninklijke Philips Electronics N.V. Single led driver for a traffic light

Patent Citations (8)

* 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
US20020047624A1 (en) * 2000-03-27 2002-04-25 Stam Joseph S. Lamp assembly incorporating optical feedback
US20050122064A1 (en) * 2000-12-20 2005-06-09 Gestion Proche Inc., Lighting device
EP1246511B1 (en) * 2001-03-28 2004-08-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Driver circuit for a LED-array
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
EP1499165A2 (en) * 2003-07-07 2005-01-19 Rohm Co., Ltd. Load driving device and portable apparatus utilizing such driving device
DE102005012625A1 (en) * 2005-03-18 2006-09-28 Infineon Technologies Ag Switch for controlling LED, has switching devices providing currents for diode arrangements, and logic device controlling devices such that current for corresponding arrangement is not provided at same time

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8143808B2 (en) 2006-08-08 2012-03-27 Johnson Controls Technology Company Circuit for a motor vehicle, in particular for actuating a lighting device
WO2008017467A1 (en) * 2006-08-08 2008-02-14 Johnson Controls Automotive Electronics Gmbh Circuit for a motor vehicle, in particular for actuating 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
WO2010015277A1 (en) * 2008-08-04 2010-02-11 Osram Gesellschaft mit beschränkter Haftung Multi-led lighting device
DE102008039526A1 (en) * 2008-08-23 2010-02-25 Hella Kgaa Hueck & Co. Current supplying method for LED array in lighting unit i.e. headlight, of motor vehicle, involves controlling adjustable resistors using control electronics based on comparison of measured currents in individual LED branches
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
DE102009018428A1 (en) * 2009-04-22 2010-10-28 Vishay Electronic Gmbh Circuit for a light-emitting diode arrangement and light-emitting diode module
US9277608B2 (en) 2009-04-22 2016-03-01 Vishay Electronic Gmbh Circuit for operating parallel light emitting diode strings
WO2011107138A1 (en) 2010-03-01 2011-09-09 Hella Kgaa Hueck & Co. Method for supplying current to an led array and circuit arrangement for carrying out the method
DE102010060857A1 (en) 2010-11-29 2012-05-31 Hella Kgaa Hueck & Co. Control and / or regulating means for a light-emitting diode array, circuit arrangement with such a control and / or regulating means and method for operating such a circuit arrangement
WO2012072629A2 (en) 2010-11-29 2012-06-07 Hella Kgaa Hueck & Co. Open-loop and/or closed-loop control means for a light-emitting diode array; circuit arrangement comprising such an open-loop and/or closed-loop control means and method for operating such a circuit arrangement
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
EP2744302A1 (en) * 2012-12-12 2014-06-18 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
US9814113B2 (en) 2014-02-10 2017-11-07 Tridonic Gmbh & Co Kg Voltage converter for operating lamps
AT14315U1 (en) * 2014-02-12 2015-08-15 Tridonic Gmbh & Co Kg Voltage converter for the operation of bulbs
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
EP3280228A1 (en) * 2016-08-01 2018-02-07 OSRAM GmbH Lighting system and related method of operating a lighting system
US9986608B2 (en) 2016-08-01 2018-05-29 Osram Gmbh Lighting system and related method of operating a lighting system
DE102017125173A1 (en) * 2017-10-26 2019-05-02 Preh Gmbh Method for checking the function of a plurality of pulse-width-modulatedly controlled light sources
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
DE102019112006B4 (en) * 2018-05-09 2024-10-17 Infineon Technologies Ag CONTROL CIRCUIT AND TECHNIQUES FOR CONTROLLING AN LED ARRAY
DE102019103660A1 (en) * 2019-02-13 2020-08-13 Vossloh-Schwabe Deutschland Gmbh Operating circuit for operating several loads
DE102019103660B4 (en) * 2019-02-13 2025-09-11 Vossloh-Schwabe Deutschland Gmbh Operating circuit for operating multiple 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

Also Published As

Publication number Publication date
GB2434929B (en) 2008-05-07
GB0702297D0 (en) 2007-03-14
GB2434929A (en) 2007-08-08

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Legal Events

Date Code Title Description
8100 Publication of patent without earlier publication of application
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: LEAR CORPORATION GMBH, 65462 GINSHEIM-GUSTAVSB, DE

R079 Amendment of ipc main class

Free format text: PREVIOUS MAIN CLASS: H05B0037020000

Ipc: H05B0047100000

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee