WO2001030119A1 - Ansteuerschaltung für led und zugehöriges betriebsverfahren - Google Patents

Ansteuerschaltung für led und zugehöriges betriebsverfahren Download PDF

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Publication number
WO2001030119A1
WO2001030119A1 PCT/DE2000/000988 DE0000988W WO0130119A1 WO 2001030119 A1 WO2001030119 A1 WO 2001030119A1 DE 0000988 W DE0000988 W DE 0000988W WO 0130119 A1 WO0130119 A1 WO 0130119A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
strand
master
leds
control circuit
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.)
Ceased
Application number
PCT/DE2000/000988
Other languages
German (de)
English (en)
French (fr)
Inventor
Alois Biebl
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
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to EP00926698A priority Critical patent/EP1151639B1/de
Priority to CA002354473A priority patent/CA2354473A1/en
Priority to US09/857,502 priority patent/US6515434B1/en
Priority to JP2001531343A priority patent/JP4914988B2/ja
Priority to DE50015299T priority patent/DE50015299D1/de
Publication of WO2001030119A1 publication Critical patent/WO2001030119A1/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2696—Mounting of devices using 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
    • H05B45/46—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]
    • H05B45/50—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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Definitions

  • the invention is based on a control circuit for LEDs and the associated operating method according to the preamble of claim 1. It is in particular about reducing the control power loss in light-emitting diodes (LEDs) by means of a clocked LED control circuit.
  • LEDs light-emitting diodes
  • R v is alternately loaded to a greater or lesser extent.
  • several LEDs are usually connected in series (string) in order to achieve better control efficiency (FIG. 2 of DE-A 19930174.3).
  • many LEDs can be combined into one string.
  • U Batt the battery voltage
  • U Batt the battery voltage
  • the legally required safety devices eg hazard warning lights
  • It 9 volts.
  • DE-A 19930174.3 also describes a reduction in the control power loss in light-emitting diodes (LEDs) by means of clocked LED control.
  • each individual LED string is regulated by itself. This leads to the greatest possible security (intelligent LED driver module, see FIG. 4 of DE-A 199 30 174.3).
  • a larger number of LED driver modules is required, which causes considerable costs. The number of LED driver modules depends on two factors:
  • the basic principle of the present invention is a cascading of the previously known control.
  • An LED control according to the concept of DE-A 19930174.3 is simplified in that the basic control clock by the clock (CLK) of the transistor T1 of a first higher-level LED string, which is called “master” in the following, at the output the comparator of the associated control loop is determined and this cycle for others subordinate LED strings (slaves) is made available ( Figure 1).
  • Resistors R S s n lying in series with the LEDs represent optional additional shunt resistors R S h_nt.
  • the illumination of an area of any size can in principle be achieved with a single control loop.
  • This is a so-called master-slave current control, with the master line setting the clock (CLK) and all additional LED lines (slave lines) being controlled with the master clock.
  • the number of LEDs in the strings can be varied.
  • There are two different embodiments for controlling LED strings that have a different number of LEDs e.g. if the number of LEDs in the master strand is larger:
  • a serial consumer (resistor, Z-diode, or the like), in particular a serial pre-resistor R xn , is additionally connected in the nth slave line, which replaces the missing light-emitting diode (or light-emitting diodes)
  • the drive clock of the LED string that drives the largest number of light-emitting diodes is used as the master clock (FIG. 2).
  • the number of LEDs in the other strings (slave strings) can be chosen to be the same size or smaller. It is advantageous only by up to 30% smaller than that in the master line so that the losses are not too great.
  • one or more additional LED control loops are integrated in the LED control module (IC), the LED string of which works with a smaller number of LEDs than the first master strand.
  • the battery voltage U Batt is connected to all transistors T.
  • the drive clock of the second master control loop (CLK 2) is then made available to the group of slave lines with the corresponding, smaller number of LEDs (FIG. 3).
  • This embodiment is suitable for groups of LED strings, each with the same number of LEDs.
  • the reliability of a master line is also preferably improved. Because if the master fails due to any circumstances (e.g. interruption), the master clock is no longer available for all slaves connected to it. The slaves are no longer controlled and must then also be switched off to protect them from destruction.
  • One of the slave lines is therefore advantageously designed as a reserve master line.
  • the reserve master is preferably used as a slave as long as the master 1 is operating regularly.
  • Error detection (malfunction) in the LED strand is also preferably improved.
  • the most common types of faults are interruption and short circuit.
  • a failure of LEDs always means an interruption. In this case, it means an interruption in the LED string, i.e. at least one LED has failed.
  • detector inputs for the slave lines are necessary in the driver module (IC), preferably a first input for the interruption detection (FIG. 5, OL) and a second input for the short-circuit detection (SC in FIG. 5).
  • OL stands for "Open Load” (interruption)
  • SC Short Circuit
  • the total number of detector inputs depends on the number of slave lines that are to be monitored. Normally, two inputs are required on the block per slave line.
  • 42V vehicle electrical system (can also be implemented for 12V vehicle electrical system).
  • Figure 1 shows the basic principle of a clocked current control for LED
  • FIG. 2 shows another embodiment of a control circuit with a different number of LEDs in individual strands
  • Figure 3 shows another embodiment of a control circuit with two
  • FIG. 6 The schematic application circuit in FIG. 6 is shown without error detection for the slave lines. Details are shown in Figure 8 of DE-A 199 30 174.3.
  • the slave lines are controlled in groups by the associated master line, which is regulated. In the event that error detection can be dispensed with in an application, the detector inputs (OL and SC) of the slave lines must be set to a fixed potential (eg HIGH).
  • the detector inputs OL and SC are also used for error detection in the slave lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Led Devices (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of El Displays (AREA)
PCT/DE2000/000988 1999-10-18 2000-04-01 Ansteuerschaltung für led und zugehöriges betriebsverfahren Ceased WO2001030119A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP00926698A EP1151639B1 (de) 1999-10-18 2000-04-01 Ansteuerschaltung für led und zugehöriges betriebsverfahren
CA002354473A CA2354473A1 (en) 1999-10-18 2000-04-01 Drive circuit for leds and an associated operating method
US09/857,502 US6515434B1 (en) 1999-10-18 2000-04-01 Control circuit for LED and corresponding operating method
JP2001531343A JP4914988B2 (ja) 1999-10-18 2000-04-01 Ｌｅｄアレイ用制御回路および対応する作動方法
DE50015299T DE50015299D1 (de) 1999-10-18 2000-04-01 Ansteuerschaltung für led und zugehöriges betriebsverfahren

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19950135A DE19950135A1 (de) 1999-10-18 1999-10-18 Ansteuerschaltung für LED und zugehöriges Betriebsverfahren
DE19950135.1 1999-10-18

Publications (1)

Publication Number Publication Date
WO2001030119A1 true WO2001030119A1 (de) 2001-04-26

Family

ID=7926033

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/000988 Ceased WO2001030119A1 (de) 1999-10-18 2000-04-01 Ansteuerschaltung für led und zugehöriges betriebsverfahren

Country Status (7)

Country Link
US (1) US6515434B1 (https=)
EP (1) EP1151639B1 (https=)
JP (2) JP4914988B2 (https=)
AT (1) ATE404035T1 (https=)
CA (1) CA2354473A1 (https=)
DE (2) DE19950135A1 (https=)
WO (1) WO2001030119A1 (https=)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003103061A1 (fr) * 2002-05-31 2003-12-11 Sony Corporation Dispositif de commande d'element emetteur de lumiere et appareil mobile l'utilisant
JP2004006622A (ja) * 2001-12-20 2004-01-08 Osram Opto Semiconductors Gmbh Ｌｅｄアレイ及びｌｅｄモジュール
JP2006511082A (ja) * 2002-12-19 2006-03-30 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 発光ダイオード用ドライバ
US8552971B2 (en) 2008-03-25 2013-10-08 Rohm Co., Ltd. Driving circuit for light emitting diode

Families Citing this family (98)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7124220B2 (en) * 2000-08-25 2006-10-17 Funhouse Productions Sequencer device with automated active port detection and sequencing
DE10115388A1 (de) * 2001-03-28 2002-10-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Ansteuerschaltung für ein LED-Array
US6621235B2 (en) * 2001-08-03 2003-09-16 Koninklijke Philips Electronics N.V. Integrated LED driving device with current sharing for multiple LED strings
TWI235349B (en) * 2001-11-26 2005-07-01 Osram Opto Semiconductors Gmbh Circuit-arrangement for an LED-array
US6586890B2 (en) * 2001-12-05 2003-07-01 Koninklijke Philips Electronics N.V. LED driver circuit with PWM output
WO2003061347A1 (de) * 2002-01-19 2003-07-24 Stührenberg GmbH Signalgeberleuchte mit leuchtdioden
US7878678B1 (en) * 2002-04-25 2011-02-01 Stamatatos Haralambos A Illuminating safety and notification device
US10180244B2 (en) 2002-04-25 2019-01-15 Haralambos A. Stamatatos Illuminating safety and notification device
DE10225670A1 (de) * 2002-06-10 2003-12-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Ansteuerschaltung für mindestens einen LED-Strang
TWI298825B (en) 2002-06-12 2008-07-11 Asml Netherlands Bv Lithographic apparatus and device manufacturing method
DE10236862B4 (de) * 2002-08-12 2008-10-02 Hella Kgaa Hueck & Co. Schaltungsanordnung zur Stromversorgung und zum Steuern von Leuchtdiodenanordnungen, insbesondere in Fahrzeugleuchten
US6798152B2 (en) * 2002-08-21 2004-09-28 Freescale Semiconductor, Inc. Closed loop current control circuit and method thereof
JP4148746B2 (ja) * 2002-10-08 2008-09-10 株式会社小糸製作所 点灯回路
US20040090403A1 (en) * 2002-11-08 2004-05-13 Dynascan Technology Corp. Light-emitting diode display apparatus with low electromagnetic display
DE10302322B4 (de) * 2003-01-20 2009-05-20 Diehl Aerospace Gmbh Beleuchtungssystem für Flugzeugkabinen
US20040141329A1 (en) * 2003-01-20 2004-07-22 Walter Fleischmann Lighting system for aircraft cabins
US6864641B2 (en) * 2003-02-20 2005-03-08 Visteon Global Technologies, Inc. Method and apparatus for controlling light emitting diodes
ATE392792T1 (de) 2003-05-07 2008-05-15 Koninkl Philips Electronics Nv Verfahren und schaltung zur steuerung des stroms von leuchtdioden
US6836157B2 (en) * 2003-05-09 2004-12-28 Semtech Corporation Method and apparatus for driving LEDs
DE10324609B4 (de) * 2003-05-30 2014-11-13 Osram Gmbh Ansteuerschaltung und LED-Array sowie Verfahren zum Betreiben eines LED-Arrays
FR2857921B1 (fr) † 2003-07-24 2006-11-24 Valeo Vision Projecteur lumineux fixe de virage pour vehicule automobile
CN1836406A (zh) 2003-08-13 2006-09-20 皇家飞利浦电子股份有限公司 通信网络
JP4317067B2 (ja) * 2004-04-02 2009-08-19 株式会社小糸製作所 車両用前照灯
JP4123183B2 (ja) * 2004-04-20 2008-07-23 ソニー株式会社 定電流駆動装置、バックライト光源装置及びカラー液晶表示装置
US7633463B2 (en) * 2004-04-30 2009-12-15 Analog Devices, Inc. Method and IC driver for series connected R, G, B LEDs
DE102004025909A1 (de) * 2004-05-27 2005-12-22 Infineon Technologies Ag Stromversorgungsanordnung zur Stromversorgung einer Last
DE102004032456B3 (de) * 2004-06-30 2006-04-06 Siemens Ag Schaltungsanordnung zum Betreiben eines Leuchtzeichens
US7276861B1 (en) 2004-09-21 2007-10-02 Exclara, Inc. System and method for driving LED
JP4400880B2 (ja) 2004-10-05 2010-01-20 株式会社小糸製作所 車両用灯具の点灯制御回路
DE102004050655A1 (de) 2004-10-18 2006-06-01 Volkswagen Ag Fahrzeug-Beleuchtungsvorrichtung und Verfahren zum Steuern einer Fahrzeug-Beleuchtungsvorrichtung
DE102004060890A1 (de) 2004-12-17 2006-06-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Kfz-Scheinwerferelement
US8791644B2 (en) * 2005-03-29 2014-07-29 Linear Technology Corporation Offset correction circuit for voltage-controlled current source
JP4398411B2 (ja) 2005-07-12 2010-01-13 株式会社小糸製作所 車両用灯具の点灯制御装置
US20080001547A1 (en) * 2005-09-20 2008-01-03 Negru Sorin L Driving parallel strings of series connected LEDs
US7872430B2 (en) 2005-11-18 2011-01-18 Cree, Inc. Solid state lighting panels with variable voltage boost current sources
DE102005056255A1 (de) * 2005-11-25 2007-06-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsvorrichtung mit obenliegendem Buck-Transistor
DE102006000810B4 (de) * 2006-01-03 2007-10-04 Vossloh-Schwabe Optoelectronic Gmbh & Co. Kg Verschaltete Anordnung von wenigstens einen Leuchtdiodenchip aufweisenden Einzelmodulen
US8441210B2 (en) * 2006-01-20 2013-05-14 Point Somee Limited Liability Company Adaptive current regulation for solid state lighting
US8558470B2 (en) * 2006-01-20 2013-10-15 Point Somee Limited Liability Company Adaptive current regulation for solid state lighting
US7852009B2 (en) * 2006-01-25 2010-12-14 Cree, Inc. Lighting device circuit with series-connected solid state light emitters and current regulator
TWI341510B (en) * 2006-01-26 2011-05-01 Au Optronics Corp Driver and driving method of semiconductor light emitting device array
CN101395826B (zh) * 2006-03-02 2012-04-11 皇家飞利浦电子股份有限公司 照明设备
ATE515177T1 (de) * 2006-05-02 2011-07-15 Koninkl Philips Electronics Nv Leuchtdiodenschaltung, anordnung und vorrichtung
US8067900B2 (en) * 2006-12-04 2011-11-29 Nxp B.V. Electronic device for driving LED strings
CN101222798B (zh) * 2007-01-11 2010-05-19 聚积科技股份有限公司 发光二极管的驱动电路
AT504949B1 (de) * 2007-02-20 2008-11-15 Zizala Lichtsysteme Gmbh Schaltungsanordnung zur erkennung eines kurzschlusses von leuchtdioden
US8703492B2 (en) * 2007-04-06 2014-04-22 Qiagen Gaithersburg, Inc. Open platform hybrid manual-automated sample processing system
US8049709B2 (en) 2007-05-08 2011-11-01 Cree, Inc. Systems and methods for controlling a solid state lighting panel
US7541750B2 (en) * 2007-05-28 2009-06-02 Leadtrend Technology Corp. DC to DC converter with load open detection and related method thereof
JP4577525B2 (ja) 2007-05-31 2010-11-10 東芝ライテック株式会社 照明装置
KR20090058363A (ko) * 2007-12-04 2009-06-09 삼성전자주식회사 발광 다이오드의 순방향 전압을 이용하여 광학 파라미터를보상하는 디스플레이 장치 및 디스플레이 방법
TWI400989B (zh) * 2008-05-30 2013-07-01 Green Solution Technology Inc 發光二極體驅動電路及其控制器
US8344638B2 (en) 2008-07-29 2013-01-01 Point Somee Limited Liability Company Apparatus, system and method for cascaded power conversion
DE102008060947A1 (de) * 2008-12-06 2009-09-17 Daimler Ag Verfahren zum Betrieb einer Beleuchtungsvorrichtung, insbesondere eines Fahrzeugscheinwerfers
TW201026177A (en) * 2008-12-23 2010-07-01 Starchips Technology Inc Electronic device module
TWI401990B (zh) * 2008-12-31 2013-07-11 Genesis Photonics Inc Electronic device, constant current unit and stable current method
WO2010113316A1 (ja) * 2009-04-03 2010-10-07 Ｎｅｃディスプレイソリューションズ株式会社 Ｌｅｄ駆動装置、およびｌｅｄ駆動制御方法
EP2422583A1 (en) * 2009-04-23 2012-02-29 Koninklijke Philips Electronics N.V. Driver for an led lamp
CA2765740A1 (en) * 2009-06-16 2010-12-23 Nexxus Lighting, Inc. Continuous step driver
US8081199B2 (en) * 2009-06-26 2011-12-20 Panasonic Corporation Light emitting element drive apparatus, planar illumination apparatus, and liquid crystal display apparatus
US10264637B2 (en) 2009-09-24 2019-04-16 Cree, Inc. Solid state lighting apparatus with compensation bypass circuits and methods of operation thereof
US8901845B2 (en) 2009-09-24 2014-12-02 Cree, Inc. Temperature responsive control for lighting apparatus including light emitting devices providing different chromaticities and related methods
US9713211B2 (en) * 2009-09-24 2017-07-18 Cree, Inc. Solid state lighting apparatus with controllable bypass circuits and methods of operation thereof
DE102009054172A1 (de) * 2009-11-23 2011-05-26 Xtronic Gmbh Schaltung zum Betreiben von Leuchtdioden, Schweinwerfer und Kraftfahrzeug
WO2011084525A1 (en) 2009-12-16 2011-07-14 Exclara, Inc. Adaptive current regulation for solid state lighting
US8476836B2 (en) 2010-05-07 2013-07-02 Cree, Inc. AC driven solid state lighting apparatus with LED string including switched segments
US8629632B2 (en) * 2010-11-11 2014-01-14 Maxim Integrated Products, Inc. LED backlight driver
DE102010054899B4 (de) * 2010-12-17 2018-07-12 Austriamicrosystems Ag Regelkreisanordnung, Schaltungsanordnung und Verfahren zur Regelung einer mit einer Last gekoppelten Stromquelle
TWI425874B (zh) * 2010-12-23 2014-02-01 Leadtrend Tech Corp 積體電路、控制方法、與光源提供系統
US9839083B2 (en) 2011-06-03 2017-12-05 Cree, Inc. Solid state lighting apparatus and circuits including LED segments configured for targeted spectral power distribution and methods of operating the same
WO2013005655A1 (ja) * 2011-07-05 2013-01-10 Ｎｅｃライティング株式会社 発光素子故障検出器及び発光素子故障検出方法
WO2013014580A1 (en) * 2011-07-22 2013-01-31 Koninklijke Philips Electronics N.V. Light emitting diode driver with non-destructive circuit for indicating fault or outage of light emitting diode load
KR20130012670A (ko) * 2011-07-26 2013-02-05 삼성디스플레이 주식회사 백라이트 유닛 및 그것의 전류 제어 방법
US8742671B2 (en) 2011-07-28 2014-06-03 Cree, Inc. Solid state lighting apparatus and methods using integrated driver circuitry
ITPD20110370A1 (it) * 2011-11-23 2013-05-24 Automotive Lighting Italia S P A A Socio Unico Circuito e metodo di pilotaggio di sorgenti luminose, e fanale automobilistico comprendente tale circuito
TWI477788B (zh) * 2012-04-10 2015-03-21 Realtek Semiconductor Corp 偵測發光二極體短路的方法及其裝置
US10621942B2 (en) * 2012-06-06 2020-04-14 Texas Instruments Incorporated Output short circuit protection for display bias
EP2947966A1 (en) * 2014-05-19 2015-11-25 Elekno Oy Led lighting device
TWI537919B (zh) * 2014-05-23 2016-06-11 友達光電股份有限公司 顯示器及其子畫素驅動方法
FR3078383A1 (fr) * 2018-02-27 2019-08-30 Valeo Vision Module lumineux pour un vehicule automobile comprenant une pluralite de branches de sources lumineuses
US11581725B2 (en) 2018-07-07 2023-02-14 Intelesol, Llc Solid-state power interrupters
US11671029B2 (en) 2018-07-07 2023-06-06 Intelesol, Llc AC to DC converters
US11056981B2 (en) 2018-07-07 2021-07-06 Intelesol, Llc Method and apparatus for signal extraction with sample and hold and release
CN108944653B (zh) * 2018-09-14 2024-05-14 常州瑞阳电装有限公司 一种全域式闪光器驱动电路
US11205011B2 (en) 2018-09-27 2021-12-21 Amber Solutions, Inc. Privacy and the management of permissions
US11197153B2 (en) 2018-09-27 2021-12-07 Amber Solutions, Inc. Privacy control and enhancements for distributed networks
US11334388B2 (en) 2018-09-27 2022-05-17 Amber Solutions, Inc. Infrastructure support to enhance resource-constrained device capabilities
US10985548B2 (en) 2018-10-01 2021-04-20 Intelesol, Llc Circuit interrupter with optical connection
US11349296B2 (en) 2018-10-01 2022-05-31 Intelesol, Llc Solid-state circuit interrupters
WO2020131977A1 (en) * 2018-12-17 2020-06-25 Intelesol, Llc Ac-driven light-emitting diode systems
US11342151B2 (en) 2019-05-18 2022-05-24 Amber Solutions, Inc. Intelligent circuit breakers with visual indicators to provide operational status
DE202019005724U1 (de) 2019-08-13 2021-09-03 Zkw Group Gmbh Kraftfahrzeug-Beleuchtungseinrichtung
EP3780911A1 (de) 2019-08-13 2021-02-17 ZKW Group GmbH Kraftfahrzeug-beleuchtungseinrichtung
CN115461629A (zh) 2020-01-21 2022-12-09 安泊半导体公司 智能电路中断
US11670946B2 (en) 2020-08-11 2023-06-06 Amber Semiconductor, Inc. Intelligent energy source monitoring and selection control system
US12113525B2 (en) 2021-09-30 2024-10-08 Amber Semiconductor, Inc. Intelligent electrical switches
US12348028B2 (en) 2021-10-22 2025-07-01 Amber Semiconductor, Inc. Multi-output programmable power manager
US12362646B2 (en) 2022-01-26 2025-07-15 Amber Semiconductor, Inc. Controlling AC power to inductive loads

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0216348A1 (de) * 1985-09-27 1987-04-01 Siemens Aktiengesellschaft Schaltungsanordnung zum Betreiben von Leuchtdioden bei hoher Packungsdichte
DE9002812U1 (de) * 1990-02-13 1990-06-07 Siemens AG, 1000 Berlin und 8000 München Infrarot-Scheinwerfer
US5598068A (en) * 1994-03-18 1997-01-28 Sony/Tektronix Corporation Light emitting apparatus comprising multiple groups of LEDs each containing multiple LEDs
EP0896899A2 (de) * 1997-08-12 1999-02-17 Reitter & Schefenacker GmbH & Co. KG Heckleuchte von Kraftfahrzeugen
DE19749333A1 (de) * 1997-09-19 1999-03-25 Garufo Gmbh Leuchtsignal
DE29900537U1 (de) * 1998-02-07 1999-07-15 Mannesmann VDO AG, 60388 Frankfurt Schaltungsanordnung zur Anzeigenbeleuchtung in Kraftfahrzeugen mittels Leuchtdioden

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63226079A (ja) * 1986-10-07 1988-09-20 Seiko Epson Corp Ｌｅｄアレイ駆動回路
US5144117A (en) * 1990-02-27 1992-09-01 Alps Electric Co., Ltd. Illumination type optical recorded information reading device
JPH0594151A (ja) * 1991-08-08 1993-04-16 Seiwa Denki Kk Ｌｅｄ点灯回路
JPH09244909A (ja) * 1996-03-13 1997-09-19 Nec Corp 情報処理システム
JPH1063303A (ja) * 1996-08-21 1998-03-06 Toshiba Corp コンピュータ制御装置
US5907569A (en) 1997-05-28 1999-05-25 Lucent Technologies Inc. Circuit for controlling the output power of an uncooled laser or light emitting diode
JPH11214183A (ja) * 1998-01-22 1999-08-06 Hochiki Corp 発光回路
US6208073B1 (en) * 1998-09-15 2001-03-27 Opto Tech Corp. Smart light emitting diode cluster and system
EP1006506A1 (en) * 1998-12-03 2000-06-07 Hewlett-Packard Company Optical vehicle display
DE19930174A1 (de) * 1999-06-30 2001-01-04 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Ansteuerschaltung für LED und zugehöriges Betriebsverfahren
US6351079B1 (en) * 1999-08-19 2002-02-26 Schott Fibre Optics (Uk) Limited Lighting control device
US6161910A (en) * 1999-12-14 2000-12-19 Aerospace Lighting Corporation LED reading light
US6362578B1 (en) * 1999-12-23 2002-03-26 Stmicroelectronics, Inc. LED driver circuit and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0216348A1 (de) * 1985-09-27 1987-04-01 Siemens Aktiengesellschaft Schaltungsanordnung zum Betreiben von Leuchtdioden bei hoher Packungsdichte
DE9002812U1 (de) * 1990-02-13 1990-06-07 Siemens AG, 1000 Berlin und 8000 München Infrarot-Scheinwerfer
US5598068A (en) * 1994-03-18 1997-01-28 Sony/Tektronix Corporation Light emitting apparatus comprising multiple groups of LEDs each containing multiple LEDs
EP0896899A2 (de) * 1997-08-12 1999-02-17 Reitter & Schefenacker GmbH & Co. KG Heckleuchte von Kraftfahrzeugen
DE19749333A1 (de) * 1997-09-19 1999-03-25 Garufo Gmbh Leuchtsignal
DE29900537U1 (de) * 1998-02-07 1999-07-15 Mannesmann VDO AG, 60388 Frankfurt Schaltungsanordnung zur Anzeigenbeleuchtung in Kraftfahrzeugen mittels Leuchtdioden

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004006622A (ja) * 2001-12-20 2004-01-08 Osram Opto Semiconductors Gmbh Ｌｅｄアレイ及びｌｅｄモジュール
WO2003103061A1 (fr) * 2002-05-31 2003-12-11 Sony Corporation Dispositif de commande d'element emetteur de lumiere et appareil mobile l'utilisant
US7365718B2 (en) 2002-05-31 2008-04-29 Sony Corporation Light emitting element drive apparatus and portable apparatus using the same
US8618745B2 (en) 2002-05-31 2013-12-31 Sony Corporation Light emitting element drive apparatus and portable apparatus using same
US8654059B2 (en) 2002-05-31 2014-02-18 Sony Corporation Light emitting element drive apparatus and portable apparatus using same
US8941581B2 (en) 2002-05-31 2015-01-27 Sony Corporation Light emitting element drive apparatus and portable apparatus using same
US9041643B2 (en) 2002-05-31 2015-05-26 Sony Corporation Light emitting element drive apparatus and portable apparatus using same
US9148927B2 (en) 2002-05-31 2015-09-29 Sony Corporation Light emitting element drive apparatus and portable apparatus using same
US9717124B2 (en) 2002-05-31 2017-07-25 Sony Corporation Light emitting element drive apparatus and portable apparatus using same
JP2006511082A (ja) * 2002-12-19 2006-03-30 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 発光ダイオード用ドライバ
US8552971B2 (en) 2008-03-25 2013-10-08 Rohm Co., Ltd. Driving circuit for light emitting diode

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US6515434B1 (en) 2003-02-04
DE19950135A1 (de) 2001-04-19
DE50015299D1 (de) 2008-09-18
ATE404035T1 (de) 2008-08-15
JP2012015123A (ja) 2012-01-19
JP4914988B2 (ja) 2012-04-11
JP2003512733A (ja) 2003-04-02
EP1151639B1 (de) 2008-08-06
CA2354473A1 (en) 2001-04-26
EP1151639A1 (de) 2001-11-07

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