CN1745603A - Led驱动器 - Google Patents

Led驱动器 Download PDF

Info

Publication number
CN1745603A
CN1745603A CNA2003801066608A CN200380106660A CN1745603A CN 1745603 A CN1745603 A CN 1745603A CN A2003801066608 A CNA2003801066608 A CN A2003801066608A CN 200380106660 A CN200380106660 A CN 200380106660A CN 1745603 A CN1745603 A CN 1745603A
Authority
CN
China
Prior art keywords
led
light source
voltage
power supply
led 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
CNA2003801066608A
Other languages
English (en)
Other versions
CN100558203C (zh
Inventor
拉格赫拉姆·纳拉西姆汉
罗希特·凯塔帕尔
A·特里帕蒂
B·克劳伯格
Y·-K·闽
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.)
Signify Holding BV
Original Assignee
Koninklijke Philips Electronics NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32682060&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN1745603(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of CN1745603A publication Critical patent/CN1745603A/zh
Application granted granted Critical
Publication of CN100558203C publication Critical patent/CN100558203C/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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]
    • H05B45/10—Controlling the intensity of the light
    • 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
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • 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]

Abstract

一种给具有可变个数的串联或者并联接线的LED的LED光源(110)供电的LED的电源(120)。电源(120)使用电流和电压反馈来调整给LED的功率，而且给LED光源(110)提供保护。反馈控制器(125)将读出的电流和读出的电压与参考信号比较，而且产生反馈信号，由功率因子校正器(124)来处理该反馈信号，从而调整流过给LED提供电流的变压器的电流。LED控制开关(127)箝位给LED的电流峰，从而给LED光源(110)提供进一步的保护。短路/开路检测电路(130)显示LED光源(110)的“LED断供”任何检测结果。

Description

LED驱动器
技术领域
本发明的技术领域是电源，尤其是LED的电源。
现有技术
白光发光二极管(LED)的技术已经有了重大的进步。在市场上可以得到产生10-15流明/瓦的白光LED。这可以和白炽灯泡的性能相比。而且，LED还有其它优点例如更长的工作时间、耐冲击/振动以及由于其小尺寸带来的结构灵活性。结果，白光LED正在代替传统的白炽光源以用于照明应用，例如标志、重点照明(accenting)和路灯。白LED可以单独使用或者为了特殊效果和彩色LED结合使用。
LED的电特性这样，使得施加给LED灯的电压的小变化引起值得重视的电流变化。而且，环境温度变化通过改变LED上正向压降(drop)也导致LED电流变化。而且，LED的流明输出决定于LED电流。已有的用于LED光源的电源没有设计成精确地调节LED电流以防止发光强度由于输入ac电压变化和环境温度而变化。LED灯长时间以过大(excessive)正向电流工作会引起无法接受的发光强度变化，而且甚至引起惨痛的失效。而且，现在的电源没有最小化功率损耗从而最大化能量节约。
发明内容
希望具有这样一种LED的电源，其可以克服上述缺陷。
本发明的一种形式是一种LED光源的电源，包括功率转换器和LED控制开关。运行功率转换器以提供包括LED电流和LED电压的调节功率。进一步运行LED控制开关以控制经过LED光源的LED电流的流动。LED控制开关进一步工作以在LED光源的初始加载阶段箝位的LED电流峰。这防止了由于场所滥用引起的LED光源损坏。
本发明的第二种形式是一种LED光源的电源，进一步包括检测电路，该检测电路工作以提供表示与LED电压相关的LED光源的运行状况的检测信号。该检测信号具有代表LED光源负载状况的第一电平。该检测信号具有代表表示LED光源短路状况或者开路状况的第二电平。
本发明的第三种形式是一种LED光源的电源，进一步包括LED电流传感器或者LED电压传感器。每一传感器包括差分放大器和用于调整差分放大器增益的装置。
结合附图阅读，从现存优选实施例随后详细的说明将使本发明的前述形式和其它形式特点和优点更加显而易见。本发明的详细说明和附图只是说明性的，而不是限定性的，本发明的范围由附加的权利要求及其等同物来限定。
附图说明
图1示出根据本发明LED光源的电源的方框图；
图2示出根据本发明的图1中电源的一个实施例的示意图；
图3示出根据本发明控制电路的一个实施例的时序图；
图4示出根据本发明短路/开路检测电路的一个实施例的示意图；
图5示出根据本发明差分放大电路的一个实施例的示意图。
具体实施方式
图1示出用于给LED光源10供电的电源20的方框图，包括可变数量的串联和/或并联接线的LED。电源20的单相交流输入21给电源20的AC/DC转换器22提供电压VAC，因此AC/DC转换器22将电压VAC转换成VDC。AC/DC转换器22给电源20的功率转换器23提供电压VDC，因此功率转换器23产生包括LED电流和LED电压VLED的稳定功率PREG。
功率转换器23给LED光源10提供稳定功率PREG。运行时，LED控制开关24控制流过LED光源10的LED电流。电源20的LED电流传感器25提供读出的电流ISE，该读出的电流ISE表示流过LED光源10的LED电流大小。电源20的LED电压传感器26提供读出的电压VSE，该读出的电压VSE表示施加给LED光源10的LED电压VLED大小。读出的电流ISE和读出的电压VSE提供给电源20的反馈控制器27。电源20的信号参考28给反馈控制器27提供参考信号REF，因此反馈控制器27根据读出的电流ISE、读出的电压VSE和参考信号REF给功率转换器23提供反馈信号FB。
LED控制开关24进一步工作以箝位流过LED光源10的LED电流峰，从而保护LED光源10以防电损害。当LED光源10从开路工作状态转变到负载工作状态时(即初始加载)，诸如，例如将LED光源10连接到电源20然后使电源20通电，LED控制开关24尤其有用。运行电源20的LED变光器29，从而通过给LED控制开关24提供控制信号CS来控制LED光源10所需的亮度。控制信号CS可以是很多种传统形式中的一种，诸如，例如，脉冲宽度调制信号(“PWM”)。
短路/开路检测电路30根据施加给LED光源10的LED电压VLED提供检测信号DS，作为LED光源10短路状态或者开路状态的指示。
电源20每个部件21-30的结构没有限制。而且，电源20的部件21-30之间的耦连可以以多种形式实现(例如，电的、光的、声的和/或磁的)。因此，电源20的实施例数量基本上是没有限制的。
图2示出用于根据本发明制造的LED光源10(图1)的一个实施例110的电源20(图1)的一个实施例120的示意图。电源120采用回扫变压器，该回扫变压器具有通过功率因子校正器(“PFC”)IC反馈到电源再到LED光源110的电流。最后，如图2所示，电源120包括EMI滤波器121、AC/DC转换器(“AC/DC”)122、变压器123、功率因子校正器124、反馈控制器125、光耦合器(optocoupler)126、LED控制开关127、LED PWM变光器129、电阻器R1-R7、电容器C1-C5、二极管D1-D3、齐纳二极管Z1-Z3和MOSFET Q1。
给电源120提供电压V1N到EMI滤波器121。该电压可以是交流输入，而且典型地是50/60赫兹、120/230VRMS。EMI滤波器121阻止对输入的电磁干扰。AC/DC122可以是桥式整流器，而且将EMI滤波器120的交流输出转变为直流。变压器123包括初级绕组W1、W4和W5，以及多个次级绕组W2和W3。绕组W1/W2构成回扫变压器，从而驱动LED光源110。回扫变压器由PFC124控制，该PFC124是功率因子校正器集成电路，例如由ST微电子股份有限公司制造的型号L6561。
回扫变压器给LED光源110传送功率，在LED光源110处，LED电流和LED电压通过反馈控制来控制。绕组W1/W3的正向转换器运行对电容器C3充电，而且在串联电阻器R4和齐纳二极管Z2之间产生参考电流信号。电容器C3上的峰值电压决定于W1/W3匝数比。来自绕组W1/W2回扫运行的输出的直流电压不能用于产生参考电流信号，因为LED光源110上的输出直流电压可以具有从一个LED灯的2.6伏直流电压到串联的8个LED的大约32伏的直流电压的宽范围。但是可以使用绕组W1/W3的正向转换器运行来代替。W1/W5绕组的正向转换器运行也可以用于给集成电路供电，例如PFC 124。
感应的LED电流ISE流过电阻器R1，该电阻器R1通过LED控制开关127与LED光源110串联。指示感应LED电流ISE的电压施加给比较器U1的非倒相输入。读出的LED电压VSE由齐纳二极管Z1产生。读出的LED电流ISE和读出的LED电压VSE以及电压参考VREF供应给反馈控制器125，因此反馈控制器125的电压反馈VFB通过电阻器R7驱动光耦合器126。在产生电压反馈VFB时，反馈控制器125采用一对比较器U1和U2、电阻器R8-R12以及电容器C6，如图2所示。
由于光耦合器126具有宽范围的电流传递比(CTR)所以必须有反馈控制器125。反馈控制器125维持精确的电压反馈VFB，因此避免流过LED光源110的LED电流发生大误差。光耦合器126将给LED光源110供电的直流电路与EMI滤波器120处的交流电路电源隔开，这两个电路在变压器123的相对侧。
光耦合器126的输出连接到PFC 124，该PFC 124给MOSFET Q1提供栅驱动信号。MOSFET Q1的控制调整流过变压器123的绕组W1的电流，以适应LED光源10的功率要求。PFC 124的内部2.5V参考信号和内部补偿电路在电阻器R6上保持2.5V的电压降。尽管这个例子使用MOSFET Q1来调整变压器电流，但是可选择的实施例可以使用其它类型的晶体管来调整该电流，例如绝缘栅双极晶体管(“IGBT”)或者双极晶体管。在ZCD处PFC 124的输入提供由绕组W2/W4驱动的复位信号。
齐纳二极管Z1还提供对LED光源110的过电压保护。具体而言，齐纳二极管Z1跨过输出连接连接到LED光源110，并且箝位输出电压到给定最高值。额定齐纳运行电压选择为正好高于最大给定输出电压。在输出开路电路的情况下，变压器123绕组W1/W2的回扫运行将持续，从而建立输出电压。一直上升的输出电压接通齐纳二极管Z1，因此提高通过电阻器R7和光耦合器126从反馈控制器125到电阻器R6的反馈量。这限制了到MOSFET Q1的栅驱动信号，防止回扫转换器对LED光源110建立的输出电压高于给定最大电压。同样，从复位绕组W4连接到电阻器R6的齐纳二极管Z3将防止由于反馈控制器125故障引起的输出过电压。在可选择的实施例中，根据特定应用所要求的控制保护程度，可以省略齐纳二极管Z1或者齐纳二极管Z3，或者省略齐纳二极管Z1和齐纳二极管Z3。
LED控制开关127包括MOSFET形式的开关SW1和双极晶体管形式的开关SW2。开关SW1和SW2可以是其它传统形式，例如IGBT。如图所示，MOSFET开关SW1的漏极连接到LED光源110。MOSFET开关SW1的栅极连接到双极开关SW2的集电极。MOSFET开关SW1的源极和双极开关SW2的基极连接到齐纳二极管Z1、电阻器R1和反馈控制器125。双极开关SW2的发射极接地。在运行时，当LED电流低于所需的峰值时，开关SW1接通，开关SW2断开。这种模式使得电源120的前端部件可以正常运行。相反，当LED电流超过所需的峰值时，开关SW1断开，开关SW2接通。这限制LED电流的峰值到安全水平，因此防止损坏LED光源110。本领域技术人员可以理解，LED控制开关127在连接LED光源110到供电电源120时尤其有用，其中电容器C2以峰值被箝位的电流释放储存的能量到LED光源110，从而防止损坏LED光源110。
MOSFET开关SW1可以通过传统的栅驱动器(未示出)或者通过所示的LED PWM变光器128来运行。
LED PWM变光器128根据外部变光指令VDC给MOSFET开关SW1提供PWM信号(未示出)。LED PWM变光器128调整PWM信号的占空因数，从而从LED光源110产生所需的光输出。LED PWM变光器128在为LED光源110产生精确和温敏最小变光电平时尤其有用。
LED PWM变光器128包括连接到MOSFET开关SW1的栅极的二极管D4和二极管D5。LED PWM变光器128的比较器U3是运算放大器的形式，其具有与二极管D4连接的输出和用于接收变光指令VDC的非倒相输入。LED PWM变光器128的传统非稳态多谐振荡器电路129连接到二极管D5。LED PWM变光器128的斜坡发生器包括与二极管D5连接的电阻器R16和MOSFET形式的晶体管Q2的栅极。晶体管Q2可以是其它形式，例如IGBT。该斜坡发生器进一步包括运算放大器U4。电阻器R15、电阻器R17、双极晶体管Q2的漏极、电容器C7和比较器U3的倒相输入连接到运算放大器U4的非倒相输入。电阻器R15进一步连接到运算放大器U4的输出。电阻器R13连接到运算放大器U4的输出和倒相输入。电阻器R14连接到运算放大器U4的倒相输入和接地。MOSFET晶体管Q2的源极和电容器C7接地。电阻器R17进一步连接到直流电压源。
运行时，LED PWM变光器128对LED光源110实现精确和温敏的最小变光电平。具体而言，非稳态多谐振荡器电路129产生最小脉冲宽度(例如图3所示的TON，MIN)。最小脉冲宽度的持续时间是非稳态多谐振荡器电路129的电阻和电容的函数。因此，该最小脉冲宽度是精确而且温敏的。斜坡发生器产生斜坡信号(例如图3所示的RS)，该斜坡信号通过该最小脉冲宽度周期性地复位。该斜坡信号提供给比较器U3的倒相输入，因此斜坡信号和变光指令VDC的比较在比较器U3的输出处产生目标脉冲宽度(例如图3所示的TON)。最小脉冲宽度和目标脉冲宽度组合，以在MOSFET开关SW1的栅极提供PWM信号。这样，当变光指令VDC超过或者等于斜坡信号时，PWM信号由与最小脉冲宽度重叠的目标脉冲宽度组成。相反，当斜坡信号超过电压变光指令VDC时，PWM信号专门由最小脉冲宽度组成。
实践中，电压变光指令VDC合适的范围是0到10伏。
                   短路/开路检测
图4示出短路/开路检测电路130的一个实施例。LED光源110上的LED电压降VLD施加在节点N1和节点N2之间，而且输入电压VIN施加在节点N2和公共参考之间。当LED光源110(图2)短路时，LED电压降VLD接近于零(0)，当LED光源110开路时，电压降VLD接近于稳定功率PREG(图1)的LED电压VLED。输入电压VIN典型地在六(6)伏到十六(16)伏的范围内。运算放大器形式的比较器U3提供高电平下的检测信号VDS以指示LED光源110的“LED断供”状态，提供低电平下的检测信号VDS以指示LED光源110的正常运行。“LED断供”状态是LED光源110短路或者开路的指示。
在所示的实施例中的输入电压VIN是直流电压。因此可以使用直流到直流型功率转换器来给LED光源110(图2)供电。在可选择的实施例中，可以将检测电路130调整为用于交流到直流型功率转换器。
双极晶体管形式的晶体管Q3的发射极和齐纳二极管Z4也连接到节点N1。晶体管Q3可以是其它传统形式，例如IGBT。电阻器R18、电阻器R21和电阻器R22也连接到节点N2。双极晶体管Q3的基极连接到电阻器R18。齐纳二极管Z4、电阻器R20和电阻器R21连接到比较器U5的倒相输入。双极晶体管Q3的集电极、二极管D6和电阻器R19连接到节点N3。电阻器R19和电阻器R20进一步连接到公共参考。二极管D6和电阻器R22连接到比较器U5的非倒相输入。
对于LED光源110的正常运行，LED电压降VLD大于晶体管Q3的基极-发射极结电压，因此晶体管Q3接通，二极管D6处于非导通状态，而且晶体管Q3的集电极处的电压超过输入电压VIN。结果，输入电压VIN施加给比较器U3的倒相输入。选择齐纳二极管Z4的导通电压高于LED电压降VLD，因此齐纳二极管Z4处于非导通状态。结果，施加给比较器U2的非倒相输入的电压将等于被电阻器R20和电阻器R21确立的分压系数降低的输入电压VIN。比较器U5的输出由于施加给倒相输入的电压高于施加给非倒相输入的电压而较低(例如接近地电压)。
对于LED光源110的开路排列状态，LED电压降VLD接近于稳定功率PRFG的LED电压VLED，选择该LED电压VLED高于齐纳二极管Z4的电压。LED电压降VLD大于晶体管Q3的基极-发射极结电压，因此晶体管Q3接通，而且晶体管Q3集电极的电压高于输入电压VIN。结果，输入电压VIN施加给比较器U3的倒相输入。齐纳二极管Z4的导通电压低于LED电压降VLD，因此齐纳二极管Z4处于导通状态。结果，施加给比较器U5的非倒相输入的电压将等于输入电压VIN和LED电压降VLD的总和减去二极管D6的导通电压。比较器U5的输出由于施加给非倒相输入的电压高于施加给倒相输入的电压而较高(例如接近输入电压VIN)。
对于LED光源110的短路排列状态，LED电压降VLD接近于零(0)伏。因此，LED电压降VLD小于晶体管Q3的基极-发射极结电压，因此晶体管Q3断开，晶体管集电极的电压被电阻器R19降低，而且二极管D6导通。结果，施加给比较器U5的倒相输入的电压将等于被电阻器R19和电阻器R22确立的分压系数降低的输入电压VIN。齐纳二极管Z4的导通电压高于LED电压降VLD，因此齐纳二极管Z4处于非导通状态。比较器U5的输出由于施加给非倒相输入的电压高于施加给倒相输入的电压而较高(例如接近输入电压VIN)。
在可选择的实施例中，可以在晶体管Q3的发射极路径中插入附加的齐纳二极管或者电压参考，来检测除了低于晶体管Q3的基极一发射极结电压之外的电压值。
图5示出具有电压输出V0、可以应用在LED电流传感器25(图1)或者LED电流传感器26(图1)中的差分放大电路。电阻器R23和电阻器R25连接到补偿电压源VOFF。电阻器R25、电阻器R26和电阻器R28连接到运算放大器U6的倒相输入。电阻器R24和电阻器R27连接到运算放大器U6的非倒相输入。电阻器R23和电阻器R24连接。电阻器R28进一步连接到运算放大器U6的输出。
运行中，施加给运算放大器U6的输入的电压低于电源电压Vdd，而与电阻器R23的大小无关。在一个实施例中，选择电阻器R25和R26以提供补偿电压VOFF的一半给运算放大器U6的倒相输入，而且选择电阻器R24和R27以获得合适的公共模拒绝(common moderejection)(例如，电阻器R28等于电阻器R26和R28的并联组合)。结果，可以按需调整运算放大器U6的增益。
请注意，图2到5示出本发明的特定应用和实施例，而且不是要限定本发明公开或者其中的权利要求的范围。通过阅读说明书和翻看其附图，对于本领域技术人员来说，将很清楚可以实现本发明的无数其它实施例，而且这种实施例预料和落入现在请求的发明的范围。
尽管这里公开的本发明实施例在这里认为是优选的，但是可以在不脱离本发明精神和范围的情况下进行各种变化和修改。本发明的范围在附加的权利要求中表示，而且这里将包含所有处于其等价物意思和范围内的所有变化。

Claims (15)

1、一种用于LED光源(10)的电源(20)，所述电源(20)包括：
功率转换器(23)，可以运行以提供包括LED电流和LED电压的稳定功率；和
LED控制开关(24)，可以运行以控制流过LED光源(10)的LED电流的流动，
其中所述LED控制开关(24)还可以运行以箝位在LED光源(10)的初始加载阶段期间的LED电流峰。
2、权利要求1的电源(20)，其中所述LED控制开关(24)包括：
可以运行从而当LED电流低于峰阈值时建立从LED光源(10)到所述功率转换器(23)的电流路径的开关(SW1)，所述开关(SW1)该可以运行从而当LED电流高于峰阈值时断开该电流路径。
3、权利要求2的电源(20)，还包括：
LED PWM变光器(29)，可以运行以根据外部变光指令给所述开关(SW1)提供脉冲宽度调制信号，
其中所述脉冲宽度调制信号根据超过斜坡信号的变光指令具有目标脉冲宽度，和
其中所述脉冲宽度调制信号根据超过变光指令的斜坡信号具有最小脉冲宽度。
4、权利要求3的电源(20)，其中所述LED PWM变光器(29)包括：
非稳态多谐振荡器电路(129)，可以运行从而以精确和温敏的方式建立最小脉冲宽度。
5、权利要求2的电源(20)，其中所述LED PWM变光器(29)包括：
比较器(U3)，可以运行从而根据变光指令和斜坡信号的接收建立目标脉冲宽度。
6、权利要求5的电源(20)，其中所述LED PWM变光器(29)还包括：
斜坡发生器，可以运行从而给所述比较器(U3)提供指示最小脉冲宽度的斜坡信号。
7、权利要求6的电源(20)，其中所述LED PWM变光器(29)还包括：
非稳态多谐振荡器电路(129)，可以运行从而以精确和温敏的方式建立最小脉冲宽度。
8、权利要求1的电源(20)，还包括：
检测电路(30)，可以运行从而提供检测信号，该检测信号指示与LED电压相关的LED光源(10)的运行状态，
其中该检测信号具有第一电平，该第一电平表示LED光源(10)的负载状态，和
其中该检测信号具有第二电平，该第二电平表示LED光源(10)的短路状态或者开路状态。
9、权利要求8的电源(20)，其中该负载运行状态表示LED光源(10)上的LED电压降大小在零伏和LED电压之间。
10、权利要求8的电源(20)，其中该短路运行状态表示LED光源(10)上的LED电压降大小接近零伏。
11、权利要求8的电源(20)，其中该开路运行状态表示LED光源(10)上的LED电压降大小接近LED电压。
12、权利要求1的电源(20)，还包括：
电流传感器(25)，可以运行从而读出流过该LED光源(10)的LED电流，所述电流传感器(25)包括：
运算放大器(U6)，和
用于调整所述差分放大器的增益的装置。
13、权利要求1的电源(20)，还包括：
电压传感器(26)，可以运行从而读出施加给该LED光源(10)的LED电压，所述电压传感器(26)包括：
运算放大器(U6)，和
用于调整所述差分放大器的增益的装置。
14、一种运行LED光源(10)的方法，所述方法包括：
给LED光源(10)提供稳定功率，该稳定功率包括LED电流和LED电压；
控制流过该LED电源(10)的LED电流的流动；和
箝位在LED光源(10)的初始加载阶段期间的LED电流峰。
15、权利要求14的方法，还包括：
产生指示与LED电压相关的LED光源(10)的运行状态的检测信号，
其中该检测信号具有第一电平，指示该LED光源(10)的正常运行状态，和
其中该检测信号具有第二电平，指示该LED光源(10)的短路运行状态或者开路运行状态。
CNB2003801066608A 2002-12-19 2003-12-11 用于led光源的电源和运行led光源的方法 Expired - Lifetime CN100558203C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43455002P 2002-12-19 2002-12-19
US60/434,550 2002-12-19

Publications (2)

Publication Number Publication Date
CN1745603A true CN1745603A (zh) 2006-03-08
CN100558203C CN100558203C (zh) 2009-11-04

Family

ID=32682060

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2003801066608A Expired - Lifetime CN100558203C (zh) 2002-12-19 2003-12-11 用于led光源的电源和运行led光源的方法

Country Status (10)

Country Link
US (1) US7262559B2 (zh)
EP (2) EP1579735B1 (zh)
JP (1) JP5426807B2 (zh)
KR (1) KR100982167B1 (zh)
CN (1) CN100558203C (zh)
AU (1) AU2003303130A1 (zh)
ES (2) ES2933481T3 (zh)
FI (1) FI2964000T3 (zh)
TW (1) TWI372577B (zh)
WO (1) WO2004057924A1 (zh)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008144961A1 (en) * 2007-05-31 2008-12-04 Texas Instruments Incorporated Regulation for led strings
CN101827473A (zh) * 2009-03-03 2010-09-08 黄秉钧 一种发光元件的定功率驱动控制方法
CN101938865A (zh) * 2009-06-30 2011-01-05 飞宏科技股份有限公司 用以降低输出涟波电流的可调光的发光二极管装置及其驱动电路
CN102014537A (zh) * 2009-09-14 2011-04-13 深圳市航嘉驰源电气股份有限公司 Led灯驱动电路
CN102065613A (zh) * 2010-12-22 2011-05-18 极创电子股份有限公司 驱动电路
CN101207958B (zh) * 2006-12-18 2011-06-29 广鹏科技股份有限公司 可提供回授控制与开路保护之驱动电路及其相关驱动方法
CN101316466B (zh) * 2007-05-30 2011-12-07 联阳半导体股份有限公司 定电流驱动电路
WO2012019456A1 (en) * 2010-08-12 2012-02-16 Huizhou Light Engine Ltd. Led switch circuitry for varying input voltage source
WO2012024978A1 (zh) * 2010-08-25 2012-03-01 四川省桑瑞光辉标识系统股份有限公司 一种led智能动态控制系统、驱动电源及控制方法
CN102378443A (zh) * 2010-08-12 2012-03-14 惠州元晖光电有限公司 用于改变输入电压源的led开关电路
CN102428759A (zh) * 2009-05-12 2012-04-25 皇家飞利浦电子股份有限公司 用于管理照明负载的智能调光器
CN101262722B (zh) * 2007-03-08 2012-05-23 宁波安迪光电科技有限公司 Led照明装置
CN101669405B (zh) * 2007-04-27 2012-06-13 皇家飞利浦电子股份有限公司 Led故障检测电路
CN102497698A (zh) * 2011-12-01 2012-06-13 北京朗波尔光电股份有限公司 Led恒流驱动器和灯具设备
CN101521967B (zh) * 2008-01-03 2012-07-25 崇贸科技股份有限公司 发光二极管驱动器的离线控制电路
CN102740548A (zh) * 2011-03-31 2012-10-17 动运株式会社 照明驱动装置
CN101652004B (zh) * 2009-04-10 2013-01-23 成都芯源系统有限公司 白光led电路及控制白光led平均电流的方法
CN103152936A (zh) * 2013-02-25 2013-06-12 阳亮 单级电源led恒流驱动模拟电压调光电路
CN103152937A (zh) * 2013-02-25 2013-06-12 阳亮 单级电源led恒流驱动pwm输入调光电路
WO2013189159A1 (zh) * 2012-06-20 2013-12-27 伟思科技控股有限公司 一种发光元件的驱动电路及照明装置
CN103813585A (zh) * 2012-11-02 2014-05-21 Lg伊诺特有限公司 一种用于控制发光器件的设备
CN104039059A (zh) * 2013-03-06 2014-09-10 深圳市海洋王照明工程有限公司 一种故障显示电路及灯具
CN104247562A (zh) * 2012-03-02 2014-12-24 皇家飞利浦有限公司 光源、驱动器的使用和用于驱动的方法
CN104955249A (zh) * 2015-07-28 2015-09-30 李泽宏 一种防闪烁led交流驱动电路
TWI617220B (zh) * 2015-05-29 2018-03-01 線性科技股份有限公司 在脈衝寬度調變關閉時間期間維持ｌｅｄ驅動器操作點
CN108055881A (zh) * 2015-09-14 2018-05-18 法雷奥照明公司 微米线或纳米线led光源的功率管理
CN113470555A (zh) * 2021-07-15 2021-10-01 中科芯集成电路有限公司 一种led显示驱动芯片开路灯珠检测方法

Families Citing this family (278)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7538473B2 (en) * 2004-02-03 2009-05-26 S.C. Johnson & Son, Inc. Drive circuits and methods for ultrasonic piezoelectric actuators
US7723899B2 (en) 2004-02-03 2010-05-25 S.C. Johnson & Son, Inc. Active material and light emitting device
GB0402974D0 (en) 2004-02-11 2004-03-17 Bhagat Peter Apparatus for the control of lighting and associated methods
US10499465B2 (en) 2004-02-25 2019-12-03 Lynk Labs, Inc. High frequency multi-voltage and multi-brightness LED lighting devices and systems and methods of using same
US10575376B2 (en) 2004-02-25 2020-02-25 Lynk Labs, Inc. AC light emitting diode and AC LED drive methods and apparatus
WO2011143510A1 (en) 2010-05-12 2011-11-17 Lynk Labs, Inc. Led lighting system
US20050259424A1 (en) 2004-05-18 2005-11-24 Zampini Thomas L Ii Collimating and controlling light produced by light emitting diodes
US7132805B2 (en) * 2004-08-09 2006-11-07 Dialight Corporation Intelligent drive circuit for a light emitting diode (LED) light engine
JP5048506B2 (ja) * 2004-10-27 2012-10-17 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 調光可能なｌｅｄ電源における起動フリッカ抑制
US7317302B1 (en) * 2005-03-04 2008-01-08 National Semiconductor Corporation Converter with feedback voltage referenced to output voltage
JP4379416B2 (ja) * 2005-04-26 2009-12-09 エプソンイメージングデバイス株式会社 Ｌｅｄ駆動回路、照明装置および電気光学装置
KR100691326B1 (ko) * 2005-09-16 2007-03-12 삼성전자주식회사 디스플레이장치
DE102005046583A1 (de) * 2005-09-28 2007-03-29 Eppendorf Ag Laborvorrichtung zur gleichzeitigen Durchführung von Reaktionen in einer Mehrzahl von Proben
US20070146253A1 (en) * 2005-12-22 2007-06-28 Au Optronics Corporation Method and device for brightness stabilization in AMOLED display
KR20070093736A (ko) * 2006-03-15 2007-09-19 삼성전자주식회사 발광장치 및 그 제어방법
TW200737066A (en) * 2006-03-22 2007-10-01 Beyond Innovation Tech Co Ltd Driving circuit with protection module for back light module
EP1843639A1 (en) * 2006-04-06 2007-10-10 Kwang Yang Motor Co., Ltd. LED car lamp apparatus
US7766511B2 (en) 2006-04-24 2010-08-03 Integrated Illumination Systems LED light fixture
JP5007394B2 (ja) * 2006-05-08 2012-08-22 シーシーエス株式会社 光制御装置及び光照射システム
DE102006026938A1 (de) * 2006-06-09 2007-12-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH LED Lichtquelle mit konstanter Intensität während der Betriebsdauer
KR100703224B1 (ko) * 2006-06-29 2007-04-09 삼성전기주식회사 Ｌｃｄ 백라이트 인버터용 전압 피드백 회로
BRPI0715776A2 (pt) * 2006-08-17 2013-07-16 Technology Lp aparelho e mÉtodo para controlar tensço tÉrmica em um ou mais elementos emissores de luz
GB2443091B (en) * 2006-10-19 2012-02-15 Radiant Res Ltd Improvements in or relating to lighting control systems
EP1919261A1 (en) * 2006-10-30 2008-05-07 Alcatel Lucent Low frequency, constant current control circuit for power leds
US7729941B2 (en) 2006-11-17 2010-06-01 Integrated Illumination Systems, Inc. Apparatus and method of using lighting systems to enhance brand recognition
TWI356373B (en) * 2006-11-21 2012-01-11 Chimei Innolux Corp Light emitting diode illuminating device
US7583120B2 (en) * 2006-11-21 2009-09-01 Semiconductor Components Industries, L.L.C. Power supply controller and method therefor
US8013538B2 (en) 2007-01-26 2011-09-06 Integrated Illumination Systems, Inc. TRI-light
KR101373395B1 (ko) * 2007-04-27 2014-03-13 엘지디스플레이 주식회사 백라이트 유닛 및 이를 구비한 액정표시장치
NO326331B1 (no) * 2007-05-04 2008-11-10 Ledlight Group As Styringselektronikk for høyeffekt LED
JP4577525B2 (ja) * 2007-05-31 2010-11-10 東芝ライテック株式会社 照明装置
US11473741B2 (en) * 2007-05-31 2022-10-18 Aaron Chien LED light has built-in air related part(s)
US20090008275A1 (en) * 2007-07-02 2009-01-08 Ferrari Michael G Package and merchandising system
US8102275B2 (en) * 2007-07-02 2012-01-24 Procter & Gamble Package and merchandising system
US20100006462A1 (en) * 2008-07-14 2010-01-14 Mcguire Kenneth Stephen Packaging assembly having a sensory interactable element
US8742686B2 (en) 2007-09-24 2014-06-03 Integrated Illumination Systems, Inc. Systems and methods for providing an OEM level networked lighting system
US11317495B2 (en) 2007-10-06 2022-04-26 Lynk Labs, Inc. LED circuits and assemblies
US11297705B2 (en) 2007-10-06 2022-04-05 Lynk Labs, Inc. Multi-voltage and multi-brightness LED lighting devices and methods of using same
US20090115343A1 (en) * 2007-11-06 2009-05-07 Brian Matthew King LED Power Regulator with High-Speed LED Switching
US8534873B1 (en) 2007-11-13 2013-09-17 Inteltech Corporation Light fixture assembly
US9080760B1 (en) 2007-11-13 2015-07-14 Daryl Soderman Light fixture assembly
US10655837B1 (en) 2007-11-13 2020-05-19 Silescent Lighting Corporation Light fixture assembly having a heat conductive cover with sufficiently large surface area for improved heat dissipation
US8789980B1 (en) 2007-11-13 2014-07-29 Silescent Lighting Corporation Light fixture assembly
KR20100096231A (ko) * 2007-12-07 2010-09-01 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Ｌｅｄ 램프 전력 관리 시스템 및 방법
US8118447B2 (en) 2007-12-20 2012-02-21 Altair Engineering, Inc. LED lighting apparatus with swivel connection
IL188348A0 (en) * 2007-12-24 2008-11-03 Lightech Electronics Ind Ltd Controller and method for controlling an intensity of a light emitting diode (led) using a conventional ac dimmer
TW200934294A (en) * 2008-01-24 2009-08-01 Everbright Optech Inc Apparatus for controlling light emitting devices
US8502454B2 (en) 2008-02-08 2013-08-06 Innosys, Inc Solid state semiconductor LED replacement for fluorescent lamps
US8207687B1 (en) 2008-02-15 2012-06-26 Cooper Technologies Company Dimmable driver circuits for light emitting diodes
FR2927982B1 (fr) * 2008-02-22 2013-09-06 Fagorbrandt Sas Appareil electromenager et notamment une hotte d'aspiration
US8915609B1 (en) 2008-03-20 2014-12-23 Cooper Technologies Company Systems, methods, and devices for providing a track light and portable light
AU2009225455B2 (en) * 2008-03-20 2014-06-05 Signify Holding B.V. Managing SSL fixtures over PLC networks
JP4636102B2 (ja) 2008-03-24 2011-02-23 東芝ライテック株式会社 電源装置及び照明器具
JP4687735B2 (ja) * 2008-03-24 2011-05-25 東芝ライテック株式会社 電源装置及び照明器具
US7915837B2 (en) * 2008-04-08 2011-03-29 Lumetric, Inc. Modular programmable lighting ballast
US7952293B2 (en) * 2008-04-30 2011-05-31 Lsi Industries, Inc. Power factor correction and driver circuits
US8432108B2 (en) * 2008-04-30 2013-04-30 Lsi Industries, Inc. Solid state lighting, driver circuits, and related software
US7612506B1 (en) * 2008-05-08 2009-11-03 National Central University Method for controlling light-emission of a light-emitting diode light source
US8723446B2 (en) 2008-05-13 2014-05-13 Nxp B.V. Method and circuit arrangement for cycle-by-cycle control of a LED current flowing through a LED circuit arrangement, and associated circuit composition and lighting system
US8255487B2 (en) 2008-05-16 2012-08-28 Integrated Illumination Systems, Inc. Systems and methods for communicating in a lighting network
US8360599B2 (en) 2008-05-23 2013-01-29 Ilumisys, Inc. Electric shock resistant L.E.D. based light
US7609008B1 (en) 2008-06-06 2009-10-27 Mdl Corporation Method and circuit for controlling an LED
US8143811B2 (en) * 2008-06-25 2012-03-27 Lumetric, Inc. Lighting control system and method
US20100262296A1 (en) * 2008-06-25 2010-10-14 HID Laboratories, Inc. Lighting control system and method
EP2139297B1 (de) * 2008-06-27 2010-11-03 Hella KGaA Hueck & Co. Ansteuereinrichtung für eine Halbleiterlichtquelle
US20100045190A1 (en) * 2008-08-20 2010-02-25 White Electronic Designs Corporation Led backlight
US9509525B2 (en) 2008-09-05 2016-11-29 Ketra, Inc. Intelligent illumination device
US9276766B2 (en) 2008-09-05 2016-03-01 Ketra, Inc. Display calibration systems and related methods
US8773336B2 (en) 2008-09-05 2014-07-08 Ketra, Inc. Illumination devices and related systems and methods
US10210750B2 (en) 2011-09-13 2019-02-19 Lutron Electronics Co., Inc. System and method of extending the communication range in a visible light communication system
KR101001241B1 (ko) 2008-09-05 2010-12-17 서울반도체 주식회사 교류 ｌｅｄ 조광장치 및 그에 의한 조광방법
JP4600583B2 (ja) * 2008-09-10 2010-12-15 東芝ライテック株式会社 調光機能を有する電源装置及び照明器具
CN101674692B (zh) * 2008-09-12 2013-07-10 连营科技股份有限公司 发光二极管驱动装置及照明系统
TWI422134B (zh) * 2009-07-22 2014-01-01 Mstar Semiconductor Inc 極低耗電之顯示控制電路與相關方法
US7938562B2 (en) 2008-10-24 2011-05-10 Altair Engineering, Inc. Lighting including integral communication apparatus
US8214084B2 (en) 2008-10-24 2012-07-03 Ilumisys, Inc. Integration of LED lighting with building controls
US8653984B2 (en) 2008-10-24 2014-02-18 Ilumisys, Inc. Integration of LED lighting control with emergency notification systems
US8324817B2 (en) 2008-10-24 2012-12-04 Ilumisys, Inc. Light and light sensor
US8901823B2 (en) 2008-10-24 2014-12-02 Ilumisys, Inc. Light and light sensor
TWM354157U (en) * 2008-10-30 2009-04-01 Silitek Electronic Guangzhou Power supply apparatus
TWI378743B (en) * 2008-11-13 2012-12-01 Young Lighting Technology Corp Light emitting diode driving circuit
DE102008057333A1 (de) * 2008-11-14 2010-05-20 Tridonicatco Gmbh & Co. Kg Adaptiver PFC für Leuchtmittel-Lastkreis, insbesondere Lastkreis mit LED
US8203276B2 (en) * 2008-11-28 2012-06-19 Lightech Electronic Industries Ltd. Phase controlled dimming LED driver system and method thereof
US9167641B2 (en) * 2008-11-28 2015-10-20 Lightech Electronic Industries Ltd. Phase controlled dimming LED driver system and method thereof
US9326346B2 (en) 2009-01-13 2016-04-26 Terralux, Inc. Method and device for remote sensing and control of LED lights
US8358085B2 (en) 2009-01-13 2013-01-22 Terralux, Inc. Method and device for remote sensing and control of LED lights
WO2010085882A1 (en) * 2009-01-27 2010-08-05 Led Roadway Lighting Ltd. Power supply for light emitting diode roadway lighting fixture
KR100917226B1 (ko) * 2009-02-17 2009-09-16 노현태 호환성이 우수한 핀투핀형 ｌｅｄ 램프
CN101834533A (zh) * 2009-03-11 2010-09-15 鸿富锦精密工业（深圳）有限公司 电源模块
US8399819B2 (en) 2009-03-31 2013-03-19 Osram Sylvania Inc. Current source to drive a light source in an optical sensor system
CN101854114B (zh) * 2009-04-01 2013-06-05 鸿富锦精密工业（深圳）有限公司 电源模块
US20100253245A1 (en) * 2009-04-06 2010-10-07 Lightech Electronic Industries Ltd. Method, system and current limiting circuit for preventing excess current surges
US8174197B2 (en) * 2009-04-09 2012-05-08 Ge Lighting Solutions Llc Power control circuit and method
TW201038129A (en) * 2009-04-09 2010-10-16 Sanyo Electric Co Control circuit for light emitting element
US8148907B2 (en) * 2009-04-11 2012-04-03 Sadwick Laurence P Dimmable power supply
US8585245B2 (en) 2009-04-23 2013-11-19 Integrated Illumination Systems, Inc. Systems and methods for sealing a lighting fixture
JP5515931B2 (ja) * 2009-04-24 2014-06-11 東芝ライテック株式会社 発光装置及び照明装置
US8350679B2 (en) * 2009-04-24 2013-01-08 The Procter & Gamble Company Consumer product kit having enhanced product presentation
TWI495393B (zh) * 2009-05-09 2015-08-01 Innosys Inc 通用型調光器
JP2010267415A (ja) * 2009-05-12 2010-11-25 Toshiba Lighting & Technology Corp 照明装置
US8330381B2 (en) 2009-05-14 2012-12-11 Ilumisys, Inc. Electronic circuit for DC conversion of fluorescent lighting ballast
KR100951476B1 (ko) * 2009-05-28 2010-04-14 주식회사 에스엠시 발광 다이오드 조명 장치
US8299695B2 (en) 2009-06-02 2012-10-30 Ilumisys, Inc. Screw-in LED bulb comprising a base having outwardly projecting nodes
US8040078B1 (en) * 2009-06-09 2011-10-18 Koninklijke Philips Electronics N.V. LED dimming circuit
TWM368265U (en) * 2009-06-15 2009-11-01 Xin-An Li New of current balance transformer driver circuit for LED lamp
US8421366B2 (en) 2009-06-23 2013-04-16 Ilumisys, Inc. Illumination device including LEDs and a switching power control system
CN101605413B (zh) * 2009-07-06 2012-07-04 英飞特电子（杭州）有限公司 适用于可控硅调光的led驱动电路
TWI407833B (zh) * 2009-07-15 2013-09-01 Richtek Technology Corp 驅動電路與驅動負載的方法
US8536803B2 (en) * 2009-07-16 2013-09-17 Innosys, Inc Fluorescent lamp power supply
CA2672674A1 (en) * 2009-07-17 2011-01-17 Murray J. Burke Compression apparatus with variable speed screw and method
CA2672584A1 (en) * 2009-07-17 2011-01-17 Murray J. Burke Compression apparatus and method
CA2672659A1 (en) * 2009-07-17 2011-01-17 Murray J. Burke Process apparatus with output valve and operation thereof
KR101677730B1 (ko) * 2009-08-14 2016-11-30 페어차일드코리아반도체 주식회사 Ｌｅｄ 발광 장치
JP2012023001A (ja) 2009-08-21 2012-02-02 Toshiba Lighting & Technology Corp 点灯回路及び照明装置
JP5333768B2 (ja) * 2009-09-04 2013-11-06 東芝ライテック株式会社 Ｌｅｄ点灯装置および照明装置
JP5333769B2 (ja) * 2009-09-04 2013-11-06 東芝ライテック株式会社 Ｌｅｄ点灯装置および照明装置
US8395329B2 (en) * 2009-09-09 2013-03-12 Bel Fuse (Macao Commercial Offshore) LED ballast power supply having digital controller
US8334662B2 (en) 2009-09-11 2012-12-18 Iwatt Inc. Adaptive switch mode LED driver
KR101029822B1 (ko) 2009-09-16 2011-04-15 김대섭 Ｌｅｄ 전원공급 장치
JP5641180B2 (ja) * 2009-09-18 2014-12-17 東芝ライテック株式会社 Ｌｅｄ点灯装置および照明装置
US8492987B2 (en) 2009-10-07 2013-07-23 Lutron Electronics Co., Inc. Load control device for a light-emitting diode light source
TWI501697B (zh) * 2009-11-12 2015-09-21 Green Solution Tech Co Ltd 發光二極體電流控制電路、均流器及驅動裝置
WO2012087268A2 (en) * 2009-11-17 2012-06-28 Terralux, Inc. Led power-supply detection and control
US8164275B2 (en) * 2009-12-15 2012-04-24 Tdk-Lambda Americas Inc. Drive circuit for high-brightness light emitting diodes
KR101696749B1 (ko) * 2010-01-25 2017-01-17 삼성디스플레이 주식회사 백라이트 어셈블리 및 이를 갖는 표시장치
US8098503B2 (en) 2010-02-09 2012-01-17 Power Integrations, Inc. Method and apparatus to control a power converter having a low loop bandwidth
US8456096B2 (en) * 2010-02-11 2013-06-04 Dongbu Hitek Co., Ltd. Thermally controlled driver/switching regulator, and methods of controlling and/or regulating a driver and/or switching regulator
EP2553320A4 (en) 2010-03-26 2014-06-18 Ilumisys Inc LED LAMP COMPRISING A THERMOELECTRIC GENERATOR
CA2794512A1 (en) 2010-03-26 2011-09-29 David L. Simon Led light tube with dual sided light distribution
US8540401B2 (en) 2010-03-26 2013-09-24 Ilumisys, Inc. LED bulb with internal heat dissipating structures
JP2011216707A (ja) 2010-03-31 2011-10-27 Fujikura Ltd 光源駆動装置およびファイバレーザー装置
WO2011124767A1 (en) * 2010-04-08 2011-10-13 Helvar Oy Ab Transformer arrangement for protecting optoelectronics components
ES2399633B1 (es) * 2010-05-27 2014-02-05 Semai Lighting S.L. Equipo de alimentación para instalaciones de alumbrado exterior basadas en tecnología led.
US8294376B2 (en) 2010-05-30 2012-10-23 Lumetric Lighting, Inc. Fast reignition of a high intensity discharge lamp
DE102010022310B4 (de) 2010-06-01 2016-08-04 Austriamicrosystems Ag Stromquellenanordnung, Schaltungsanordnung mit der Stromquellenanordnung und Verfahren zum Betreiben einer solchen
US8454193B2 (en) 2010-07-08 2013-06-04 Ilumisys, Inc. Independent modules for LED fluorescent light tube replacement
WO2012009260A2 (en) 2010-07-12 2012-01-19 Altair Engineering, Inc. Circuit board mount for led light tube
AU2011281033A1 (en) 2010-07-22 2013-02-07 Independence Led Lighting, Llc Light engine device with direct to linear system driver
US8414153B2 (en) 2010-08-05 2013-04-09 Access 2 Communications, Inc. High powered universal LED lamp
US8541957B2 (en) * 2010-08-09 2013-09-24 Power Integrations, Inc. Power converter having a feedback circuit for constant loads
DE102010037225B4 (de) 2010-08-30 2013-02-28 Vossloh-Schwabe Deutschland Gmbh Vorrichtung und Verfahren zum Betreiben eines Leuchtmoduls mit Leerlauf-Spannungsbegrenzung
US9004715B1 (en) 2010-09-10 2015-04-14 Emergency Technology, Inc. Modular structural frame lighting
US9596738B2 (en) 2010-09-16 2017-03-14 Terralux, Inc. Communication with lighting units over a power bus
CA2810026A1 (en) 2010-09-16 2012-03-22 Terralux, Inc. Communication with lighting units over a power bus
US9386668B2 (en) 2010-09-30 2016-07-05 Ketra, Inc. Lighting control system
USRE49454E1 (en) 2010-09-30 2023-03-07 Lutron Technology Company Llc Lighting control system
US8523394B2 (en) 2010-10-29 2013-09-03 Ilumisys, Inc. Mechanisms for reducing risk of shock during installation of light tube
US8773031B2 (en) 2010-11-22 2014-07-08 Innosys, Inc. Dimmable timer-based LED power supply
US8870415B2 (en) 2010-12-09 2014-10-28 Ilumisys, Inc. LED fluorescent tube replacement light with reduced shock hazard
TWI422130B (zh) * 2011-01-26 2014-01-01 Macroblock Inc 自適型洩流電路
WO2012104747A1 (en) * 2011-01-31 2012-08-09 Koninklijke Philips Electronics N.V. Device and method for interfacing a dimming control input to a dimmable lighting driver with galvanic isolation
US8710752B2 (en) 2011-03-03 2014-04-29 Dialog Semiconductor Inc. Adaptive switch mode LED system
KR101044963B1 (ko) * 2011-03-09 2011-06-28 아이에스이텍 주식회사 엘이디 제어 회로용 전원 공급 장치
US8680787B2 (en) 2011-03-15 2014-03-25 Lutron Electronics Co., Inc. Load control device for a light-emitting diode light source
US9066381B2 (en) 2011-03-16 2015-06-23 Integrated Illumination Systems, Inc. System and method for low level dimming
JP5296130B2 (ja) * 2011-03-22 2013-09-25 シャープ株式会社 光学モジュール及び光学モジュールの製造方法
US8686651B2 (en) * 2011-04-13 2014-04-01 Supertex, Inc. Multiple stage sequential current regulator
KR101453053B1 (ko) * 2011-04-20 2014-10-23 주식회사 이엠퍼스트 엘이디 소자를 보호하는 엘이디 조명 장치 및 그 조명 장치의 제어 방법
US8441207B2 (en) * 2011-04-27 2013-05-14 Shenzhen Lvsun Electronics Technology Co., Ltd LED streetlight circuit
EP2523008B1 (en) 2011-05-09 2015-07-22 Nxp B.V. Method of characterising an LED device
US8933642B2 (en) 2011-05-13 2015-01-13 General Electric Company Dimmable LED lamp
TWI425661B (zh) * 2011-05-13 2014-02-01 Ruei Jen Chen Light emitting diode device
US9055630B1 (en) 2011-07-21 2015-06-09 Dale B. Stepps Power control system and method for providing an optimal power level to a designated light assembly
US8643300B1 (en) 2011-07-21 2014-02-04 Dale B. Stepps Power control system and method for providing an optimal power level to a designated light fixture
US9444547B2 (en) 2011-07-26 2016-09-13 Abl Ip Holding Llc Self-identifying one-way authentication method using optical signals
US11917740B2 (en) 2011-07-26 2024-02-27 Hunter Industries, Inc. Systems and methods for providing power and data to devices
US8416290B2 (en) 2011-07-26 2013-04-09 ByteLight, Inc. Method and system for digital pulse recognition demodulation
US9787397B2 (en) 2011-07-26 2017-10-10 Abl Ip Holding Llc Self identifying modulated light source
US9609720B2 (en) 2011-07-26 2017-03-28 Hunter Industries, Inc. Systems and methods for providing power and data to lighting devices
US8710770B2 (en) 2011-07-26 2014-04-29 Hunter Industries, Inc. Systems and methods for providing power and data to lighting devices
US8334898B1 (en) 2011-07-26 2012-12-18 ByteLight, Inc. Method and system for configuring an imaging device for the reception of digital pulse recognition information
US9287976B2 (en) 2011-07-26 2016-03-15 Abl Ip Holding Llc Independent beacon based light position system
US9723676B2 (en) 2011-07-26 2017-08-01 Abl Ip Holding Llc Method and system for modifying a beacon light source for use in a light based positioning system
US10874003B2 (en) 2011-07-26 2020-12-22 Hunter Industries, Inc. Systems and methods for providing power and data to devices
US9521725B2 (en) 2011-07-26 2016-12-13 Hunter Industries, Inc. Systems and methods for providing power and data to lighting devices
US20150237700A1 (en) 2011-07-26 2015-08-20 Hunter Industries, Inc. Systems and methods to control color and brightness of lighting devices
US20140239809A1 (en) 2011-08-18 2014-08-28 Lynk Labs, Inc. Devices and systems having ac led circuits and methods of driving the same
US9072171B2 (en) 2011-08-24 2015-06-30 Ilumisys, Inc. Circuit board mount for LED light
KR101876455B1 (ko) 2011-11-07 2018-07-11 삼성디스플레이 주식회사 Ｄｃ-ｄｃ 컨버터 및 이를 포함하는 발광 다이오드 구동 장치
JP6430254B2 (ja) 2011-11-14 2018-11-28 フィリップス ライティング ホールディング ビー ヴィ 固体照明装置の最大出力駆動電圧を制御するためのシステム及び方法
EP2600513A1 (en) 2011-11-30 2013-06-05 Vossloh-Schwabe Optoelektronik GmbH & Co. KG Power supply for LED light sources
US9247597B2 (en) 2011-12-02 2016-01-26 Lynk Labs, Inc. Color temperature controlled and low THD LED lighting devices and systems and methods of driving the same
US8710753B2 (en) 2011-12-07 2014-04-29 Dialog Semiconductor Inc. High performance adaptive switched LED driver
WO2013090904A1 (en) 2011-12-16 2013-06-20 Terralux, Inc. System and methods of applying bleed circuits in led lamps
GB2499220B (en) * 2012-02-08 2018-12-12 Radiant Res Limited A power control system for an illumination system
US8987997B2 (en) * 2012-02-17 2015-03-24 Innosys, Inc. Dimming driver with stealer switch
US9184518B2 (en) 2012-03-02 2015-11-10 Ilumisys, Inc. Electrical connector header for an LED-based light
US8878443B2 (en) 2012-04-11 2014-11-04 Osram Sylvania Inc. Color correlated temperature correction for LED strings
US8581520B1 (en) 2012-05-14 2013-11-12 Usai, Llc Lighting system having a dimming color simulating an incandescent light
US8456109B1 (en) 2012-05-14 2013-06-04 Usai, Llc Lighting system having a dimming color simulating an incandescent light
US8742695B2 (en) 2012-05-14 2014-06-03 Usai, Llc Lighting control system and method
US9482435B2 (en) 2012-05-31 2016-11-01 Haier Us Appliance Solutions, Inc. Method for light emitting device protection and performance in an appliance
US9163794B2 (en) 2012-07-06 2015-10-20 Ilumisys, Inc. Power supply assembly for LED-based light tube
US9271367B2 (en) 2012-07-09 2016-02-23 Ilumisys, Inc. System and method for controlling operation of an LED-based light
US8894437B2 (en) 2012-07-19 2014-11-25 Integrated Illumination Systems, Inc. Systems and methods for connector enabling vertical removal
KR101448658B1 (ko) * 2012-07-27 2014-10-08 엘지전자 주식회사 발광 다이오드 조명 장치
US8816604B2 (en) 2012-08-03 2014-08-26 Ge Lighting Solutions, Llc. Dimming control method and apparatus for LED light source
KR101498083B1 (ko) * 2012-08-06 2015-03-03 엘지전자 주식회사 발광 다이오드 조명 장치
KR20140046146A (ko) 2012-10-10 2014-04-18 삼성전자주식회사 광원장치 및 이를 이용한 차량용 헤드라이트
US9379578B2 (en) 2012-11-19 2016-06-28 Integrated Illumination Systems, Inc. Systems and methods for multi-state power management
US8723437B1 (en) * 2012-12-10 2014-05-13 Dialog Semiconductor Inc. Filter bandwidth adjustment in a multi-loop dimmer control circuit
US9420665B2 (en) 2012-12-28 2016-08-16 Integration Illumination Systems, Inc. Systems and methods for continuous adjustment of reference signal to control chip
US9485814B2 (en) 2013-01-04 2016-11-01 Integrated Illumination Systems, Inc. Systems and methods for a hysteresis based driver using a LED as a voltage reference
US9368961B2 (en) * 2013-01-08 2016-06-14 Power Integrations, Inc. Overvoltage protection circuit
US9313849B2 (en) 2013-01-23 2016-04-12 Silescent Lighting Corporation Dimming control system for solid state illumination source
US9844113B2 (en) 2013-01-25 2017-12-12 Dialog Semiconductor Inc. Adjusting color temperature in a dimmable LED lighting system
TWI481312B (zh) * 2013-03-11 2015-04-11 Inergy Technology Inc 可自行充電之驅動電路
US9078328B2 (en) 2013-03-14 2015-07-07 Grote Industries, Inc. Vehicle lighting outage detection circuit
US9285084B2 (en) 2013-03-14 2016-03-15 Ilumisys, Inc. Diffusers for LED-based lights
US9192001B2 (en) 2013-03-15 2015-11-17 Ambionce Systems Llc. Reactive power balancing current limited power supply for driving floating DC loads
TWI532409B (zh) * 2013-05-03 2016-05-01 隆達電子股份有限公司 照明裝置與其發光二極體調光電路
TWI511608B (zh) * 2013-05-06 2015-12-01 Ili Technology Corp Light emitting system and its optical power control device
US9705600B1 (en) 2013-06-05 2017-07-11 Abl Ip Holding Llc Method and system for optical communication
US9265119B2 (en) 2013-06-17 2016-02-16 Terralux, Inc. Systems and methods for providing thermal fold-back to LED lights
KR101516338B1 (ko) 2013-08-08 2015-05-04 충북대학교 산학협력단 전력 스위치의 음전압 발진 방지 회로 및 방법
USRE48955E1 (en) 2013-08-20 2022-03-01 Lutron Technology Company Llc Interference-resistant compensation for illumination devices having multiple emitter modules
US9345097B1 (en) 2013-08-20 2016-05-17 Ketra, Inc. Interference-resistant compensation for illumination devices using multiple series of measurement intervals
US9769899B2 (en) 2014-06-25 2017-09-19 Ketra, Inc. Illumination device and age compensation method
US9155155B1 (en) 2013-08-20 2015-10-06 Ketra, Inc. Overlapping measurement sequences for interference-resistant compensation in light emitting diode devices
US9237620B1 (en) 2013-08-20 2016-01-12 Ketra, Inc. Illumination device and temperature compensation method
US9332598B1 (en) 2013-08-20 2016-05-03 Ketra, Inc. Interference-resistant compensation for illumination devices having multiple emitter modules
USRE48956E1 (en) 2013-08-20 2022-03-01 Lutron Technology Company Llc Interference-resistant compensation for illumination devices using multiple series of measurement intervals
US9360174B2 (en) 2013-12-05 2016-06-07 Ketra, Inc. Linear LED illumination device with improved color mixing
US9578724B1 (en) 2013-08-20 2017-02-21 Ketra, Inc. Illumination device and method for avoiding flicker
US9247605B1 (en) 2013-08-20 2016-01-26 Ketra, Inc. Interference-resistant compensation for illumination devices
US9651632B1 (en) 2013-08-20 2017-05-16 Ketra, Inc. Illumination device and temperature calibration method
US9736895B1 (en) 2013-10-03 2017-08-15 Ketra, Inc. Color mixing optics for LED illumination device
US9267650B2 (en) 2013-10-09 2016-02-23 Ilumisys, Inc. Lens for an LED-based light
KR102158801B1 (ko) 2013-11-29 2020-09-23 삼성디스플레이 주식회사 발광 다이오드를 포함하는 발광 장치 및 그 구동 방법
US20150192261A1 (en) * 2014-01-08 2015-07-09 Richard L. May Linear Lighting Apparatus
WO2015112437A1 (en) 2014-01-22 2015-07-30 Ilumisys, Inc. Led-based light with addressed leds
CN104869686A (zh) * 2014-02-26 2015-08-26 欧司朗有限公司 驱动电路和包括该驱动电路的照明装置
US9410688B1 (en) 2014-05-09 2016-08-09 Mark Sutherland Heat dissipating assembly
US9510400B2 (en) 2014-05-13 2016-11-29 Ilumisys, Inc. User input systems for an LED-based light
US9736903B2 (en) 2014-06-25 2017-08-15 Ketra, Inc. Illumination device and method for calibrating and controlling an illumination device comprising a phosphor converted LED
US9392663B2 (en) 2014-06-25 2016-07-12 Ketra, Inc. Illumination device and method for controlling an illumination device over changes in drive current and temperature
US9557214B2 (en) 2014-06-25 2017-01-31 Ketra, Inc. Illumination device and method for calibrating an illumination device over changes in temperature, drive current, and time
US10161786B2 (en) 2014-06-25 2018-12-25 Lutron Ketra, Llc Emitter module for an LED illumination device
US9883567B2 (en) 2014-08-11 2018-01-30 RAB Lighting Inc. Device indication and commissioning for a lighting control system
US10531545B2 (en) 2014-08-11 2020-01-07 RAB Lighting Inc. Commissioning a configurable user control device for a lighting control system
US10039174B2 (en) 2014-08-11 2018-07-31 RAB Lighting Inc. Systems and methods for acknowledging broadcast messages in a wireless lighting control network
US10085328B2 (en) 2014-08-11 2018-09-25 RAB Lighting Inc. Wireless lighting control systems and methods
US9510416B2 (en) 2014-08-28 2016-11-29 Ketra, Inc. LED illumination device and method for accurately controlling the intensity and color point of the illumination device over time
US9392660B2 (en) 2014-08-28 2016-07-12 Ketra, Inc. LED illumination device and calibration method for accurately characterizing the emission LEDs and photodetector(s) included within the LED illumination device
US9380653B1 (en) 2014-10-31 2016-06-28 Dale Stepps Driver assembly for solid state lighting
US9237612B1 (en) 2015-01-26 2016-01-12 Ketra, Inc. Illumination device and method for determining a target lumens that can be safely produced by an illumination device at a present temperature
US9485813B1 (en) 2015-01-26 2016-11-01 Ketra, Inc. Illumination device and method for avoiding an over-power or over-current condition in a power converter
US9237623B1 (en) 2015-01-26 2016-01-12 Ketra, Inc. Illumination device and method for determining a maximum lumens that can be safely produced by the illumination device to achieve a target chromaticity
USD755414S1 (en) 2015-02-12 2016-05-03 Tadd, LLC LED lamp
USD755415S1 (en) 2015-03-03 2016-05-03 Tadd, LLC LED lamp
US9420644B1 (en) 2015-03-31 2016-08-16 Frank Shum LED lighting
CN104797060B (zh) * 2015-05-13 2017-11-10 昂宝电子（上海）有限公司 用于发光二极管照明系统中的温度控制的系统和方法
US10228711B2 (en) 2015-05-26 2019-03-12 Hunter Industries, Inc. Decoder systems and methods for irrigation control
US10918030B2 (en) 2015-05-26 2021-02-16 Hunter Industries, Inc. Decoder systems and methods for irrigation control
US10030844B2 (en) 2015-05-29 2018-07-24 Integrated Illumination Systems, Inc. Systems, methods and apparatus for illumination using asymmetrical optics
US10060599B2 (en) 2015-05-29 2018-08-28 Integrated Illumination Systems, Inc. Systems, methods and apparatus for programmable light fixtures
US10161568B2 (en) 2015-06-01 2018-12-25 Ilumisys, Inc. LED-based light with canted outer walls
US10330294B2 (en) 2015-12-15 2019-06-25 Wangs Alliance Corporation LED lighting methods and apparatus
US11686459B2 (en) 2015-12-15 2023-06-27 Wangs Alliance Corporation LED lighting methods and apparatus
US10941924B2 (en) 2015-12-15 2021-03-09 Wangs Alliance Corporation LED lighting methods and apparatus
GB2546623A (en) * 2016-01-25 2017-07-26 O2Micro Inc System and method for driving light source
EP3481159B1 (en) 2016-08-02 2022-04-13 Opple Lighting Co., Ltd. Led drive circuit and led lamp
US10070499B2 (en) 2017-01-03 2018-09-04 Brilliant Home Technology, Inc. Reversible-polarity wiring system
CN208462098U (zh) 2017-04-07 2019-02-01 首尔半导体株式会社 发光二极管驱动模块以及包括此的照明装置
US11812525B2 (en) 2017-06-27 2023-11-07 Wangs Alliance Corporation Methods and apparatus for controlling the current supplied to light emitting diodes
US11079077B2 (en) 2017-08-31 2021-08-03 Lynk Labs, Inc. LED lighting system and installation methods
US10595373B2 (en) 2017-10-31 2020-03-17 Fulham Company Limited Methods and apparatuses to provide dimming for a light emitting diode system
CN108337774A (zh) * 2018-02-07 2018-07-27 珠海世讯科技有限公司 一种大功率mosfet调光电路
US11272599B1 (en) 2018-06-22 2022-03-08 Lutron Technology Company Llc Calibration procedure for a light-emitting diode light source
WO2020025470A1 (en) * 2018-08-01 2020-02-06 Signify Holding B.V. A flyback converter and led driver using the flyback converter
CN109600880B (zh) * 2018-12-18 2024-03-26 陕西亚成微电子股份有限公司 一种无频闪led驱动方法及电路
EP3713376B1 (en) * 2019-03-19 2024-02-28 Tridonic GmbH & Co KG Improved led short circuit and open load detection with a single controller pin
US10801714B1 (en) 2019-10-03 2020-10-13 CarJamz, Inc. Lighting device
US11598517B2 (en) 2019-12-31 2023-03-07 Lumien Enterprise, Inc. Electronic module group
CN110985903B (zh) 2019-12-31 2020-08-14 江苏舒适照明有限公司 一种灯模组
CN111503556B (zh) 2020-04-23 2020-11-27 江苏舒适照明有限公司 一种射灯结构
US11812532B2 (en) 2021-05-27 2023-11-07 Wangs Alliance Corporation Multiplexed segmented lighting lamina
US11802682B1 (en) 2022-08-29 2023-10-31 Wangs Alliance Corporation Modular articulating lighting

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4949506B2 (zh) * 1972-01-24 1974-12-27
DE3146328A1 (de) * 1981-11-23 1983-06-01 Siemens AG, 1000 Berlin und 8000 München Leuchtdiodenvorrichtung mit schutzeinrichtung zur begrenzung des durchlassstroms
US4496939A (en) * 1982-06-04 1985-01-29 Eastman Kodak Company Power indicator apparatus for a DC to DC flyback converter
JPS59126319A (ja) * 1982-08-31 1984-07-20 Toshiba Corp チヨツパ形コンパレ−タ
CA2159842A1 (en) * 1994-12-05 1996-06-06 Joe A. Ortiz Diode drive current source
US5661645A (en) * 1996-06-27 1997-08-26 Hochstein; Peter A. Power supply for light emitting diode array
JPH1167471A (ja) * 1997-08-26 1999-03-09 Tec Corp 照明装置
KR19990083648A (ko) * 1998-07-21 1999-12-06 최병석 전광 표시 장치의 고장 검출 회로 및 그를 이용한 표시 상태 검출 방법
US5914501A (en) * 1998-08-27 1999-06-22 Hewlett-Packard Company Light emitting diode assembly having integrated electrostatic discharge protection
DE19930174A1 (de) * 1999-06-30 2001-01-04 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Ansteuerschaltung für LED und zugehöriges Betriebsverfahren
CA2343062A1 (en) * 1999-07-07 2001-01-18 Koninklijke Philips Electronics N.V. Flyback converter as led driver
DE19950135A1 (de) * 1999-10-18 2001-04-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Ansteuerschaltung für LED und zugehöriges Betriebsverfahren
JP4353667B2 (ja) * 1999-12-14 2009-10-28 株式会社タキオン Ｌｅｄランプ装置
US6611110B1 (en) 2001-01-16 2003-08-26 Design Rite, Llc Photopolymerization apparatus
DE20023993U1 (de) * 2000-03-17 2008-09-25 Tridonicatco Gmbh & Co. Kg Ansteuerschaltung für Leuchtdioden
US6275397B1 (en) * 2000-06-27 2001-08-14 Power-One, Inc. Power factor correction control circuit for regulating the current waveshape in a switching power supply
US6500101B1 (en) 2000-08-07 2002-12-31 James Chen Adjustable dumbbell
US6680834B2 (en) * 2000-10-04 2004-01-20 Honeywell International Inc. Apparatus and method for controlling LED arrays
US6548993B1 (en) * 2000-11-03 2003-04-15 Visteon Global Technologies, Inc. Power supply module having internal energy storage circuit for stable oscillation
US6577512B2 (en) * 2001-05-25 2003-06-10 Koninklijke Philips Electronics N.V. Power supply for LEDs
US6933707B2 (en) * 2002-06-27 2005-08-23 Luxidein Limited FET current regulation of LEDs
US6813170B2 (en) * 2002-08-19 2004-11-02 Semtech Corporation Multiple output power supply having soft start protection for load over-current or short circuit conditions
JP4256136B2 (ja) * 2002-10-01 2009-04-22 株式会社小糸製作所 車両用灯具

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101207958B (zh) * 2006-12-18 2011-06-29 广鹏科技股份有限公司 可提供回授控制与开路保护之驱动电路及其相关驱动方法
CN101262722B (zh) * 2007-03-08 2012-05-23 宁波安迪光电科技有限公司 Led照明装置
CN101669405B (zh) * 2007-04-27 2012-06-13 皇家飞利浦电子股份有限公司 Led故障检测电路
CN101316466B (zh) * 2007-05-30 2011-12-07 联阳半导体股份有限公司 定电流驱动电路
US7843150B2 (en) 2007-05-31 2010-11-30 Texas Instruments Incorporated Power regulation for LED strings
WO2008144961A1 (en) * 2007-05-31 2008-12-04 Texas Instruments Incorporated Regulation for led strings
CN101521967B (zh) * 2008-01-03 2012-07-25 崇贸科技股份有限公司 发光二极管驱动器的离线控制电路
CN101827473A (zh) * 2009-03-03 2010-09-08 黄秉钧 一种发光元件的定功率驱动控制方法
CN101652004B (zh) * 2009-04-10 2013-01-23 成都芯源系统有限公司 白光led电路及控制白光led平均电流的方法
CN102428759B (zh) * 2009-05-12 2016-10-12 皇家飞利浦电子股份有限公司 用于管理照明负载的方法、系统及智能调光器
CN102428759A (zh) * 2009-05-12 2012-04-25 皇家飞利浦电子股份有限公司 用于管理照明负载的智能调光器
CN101938865A (zh) * 2009-06-30 2011-01-05 飞宏科技股份有限公司 用以降低输出涟波电流的可调光的发光二极管装置及其驱动电路
CN102014537A (zh) * 2009-09-14 2011-04-13 深圳市航嘉驰源电气股份有限公司 Led灯驱动电路
CN102378443A (zh) * 2010-08-12 2012-03-14 惠州元晖光电有限公司 用于改变输入电压源的led开关电路
CN102378443B (zh) * 2010-08-12 2014-04-09 惠州元晖光电股份有限公司 用于改变输入电压源的led开关电路
WO2012019456A1 (en) * 2010-08-12 2012-02-16 Huizhou Light Engine Ltd. Led switch circuitry for varying input voltage source
CN102804926A (zh) * 2010-08-12 2012-11-28 惠州元晖光电股份有限公司 用于变化的输入电压源的led切换电路
CN102804926B (zh) * 2010-08-12 2014-06-18 惠州元晖光电股份有限公司 用于变化的输入电压源的led切换电路
AU2011288851B2 (en) * 2010-08-12 2014-04-17 Huizhou Light Engine Ltd. LED switch circuitry for varying input voltage source
WO2012024978A1 (zh) * 2010-08-25 2012-03-01 四川省桑瑞光辉标识系统股份有限公司 一种led智能动态控制系统、驱动电源及控制方法
CN102065613A (zh) * 2010-12-22 2011-05-18 极创电子股份有限公司 驱动电路
CN102740548B (zh) * 2011-03-31 2015-04-22 动运株式会社 照明驱动装置
CN102740548A (zh) * 2011-03-31 2012-10-17 动运株式会社 照明驱动装置
CN102497698A (zh) * 2011-12-01 2012-06-13 北京朗波尔光电股份有限公司 Led恒流驱动器和灯具设备
CN104247562B (zh) * 2012-03-02 2017-06-06 皇家飞利浦有限公司 光源、驱动器的使用和用于驱动的方法
CN104247562A (zh) * 2012-03-02 2014-12-24 皇家飞利浦有限公司 光源、驱动器的使用和用于驱动的方法
CN104041187A (zh) * 2012-06-20 2014-09-10 伟思科技控股有限公司 一种发光元件的驱动电路及照明装置
CN104041187B (zh) * 2012-06-20 2015-11-25 伟思科技控股有限公司 一种发光元件的驱动电路及照明装置
WO2013189159A1 (zh) * 2012-06-20 2013-12-27 伟思科技控股有限公司 一种发光元件的驱动电路及照明装置
GB2517537A (en) * 2012-06-20 2015-02-25 Wisdom Technologies Holding Ltd Drive circuit of light-emitting element and illumination device
CN103813585B (zh) * 2012-11-02 2017-11-24 Lg伊诺特有限公司 一种用于控制发光器件的设备
CN103813585A (zh) * 2012-11-02 2014-05-21 Lg伊诺特有限公司 一种用于控制发光器件的设备
CN103152936A (zh) * 2013-02-25 2013-06-12 阳亮 单级电源led恒流驱动模拟电压调光电路
CN103152937A (zh) * 2013-02-25 2013-06-12 阳亮 单级电源led恒流驱动pwm输入调光电路
CN103152936B (zh) * 2013-02-25 2015-07-15 阳亮 单级电源led恒流驱动模拟电压调光电路
CN104039059A (zh) * 2013-03-06 2014-09-10 深圳市海洋王照明工程有限公司 一种故障显示电路及灯具
TWI617220B (zh) * 2015-05-29 2018-03-01 線性科技股份有限公司 在脈衝寬度調變關閉時間期間維持ｌｅｄ驅動器操作點
CN104955249A (zh) * 2015-07-28 2015-09-30 李泽宏 一种防闪烁led交流驱动电路
CN108055881A (zh) * 2015-09-14 2018-05-18 法雷奥照明公司 微米线或纳米线led光源的功率管理
CN108055881B (zh) * 2015-09-14 2020-02-14 法雷奥照明公司 微米线或纳米线led光源的功率管理
CN113470555A (zh) * 2021-07-15 2021-10-01 中科芯集成电路有限公司 一种led显示驱动芯片开路灯珠检测方法

Also Published As

Publication number Publication date
KR100982167B1 (ko) 2010-09-14
AU2003303130A1 (en) 2004-07-14
EP2964000A3 (en) 2016-08-24
CN100558203C (zh) 2009-11-04
JP2006511082A (ja) 2006-03-30
EP1579735B1 (en) 2016-03-09
AU2003303130A8 (en) 2004-07-14
JP5426807B2 (ja) 2014-02-26
ES2933481T3 (es) 2023-02-09
EP2964000A2 (en) 2016-01-06
ES2569057T3 (es) 2016-05-06
EP1579735A1 (en) 2005-09-28
US7262559B2 (en) 2007-08-28
US20060071614A1 (en) 2006-04-06
KR20050089841A (ko) 2005-09-08
TWI372577B (en) 2012-09-11
WO2004057924A1 (en) 2004-07-08
EP2964000B1 (en) 2022-10-05
TW200428896A (en) 2004-12-16
FI2964000T3 (fi) 2023-01-13

Similar Documents

Publication Publication Date Title
CN1745603A (zh) Led驱动器
US9967933B2 (en) Electronic control to regulate power for solid-state lighting and methods thereof
CN100381018C (zh) 用于led的电源
US8975825B2 (en) Light emitting diode driver with isolated control circuits
US8502461B2 (en) Driving circuit and control circuit
CN104115556B (zh) 次级侧切相调光角检测
EP2630843B1 (en) Led circuit arrangement
CN104025716B (zh) 用于具有高压led组件的固态照明装置的驱动电路以及相关方法
TWI434603B (zh) 發光二極體驅動電路及控制電路
CN102640306A (zh) Led驱动电路
US20150145427A1 (en) Boost and linear led control
CA2749833A1 (en) Ballast/line detection circuit for fluorescent replacement lamps
CN101636018A (zh) 光源驱动电路及包含光源驱动电路的照明系统
US8912732B2 (en) Current sensing for LED drivers
US20130187551A1 (en) Method and System for Driving LEDs from a Source of Rectified AC Voltage
KR20140070126A (ko) 조명 구동 장치 및 조명 구동 방법
KR20090056025A (ko) 엘이디등 전원장치
WO2011136495A2 (ko) Ｌｅｄ 램프 조도제어용 보호회로
KR200322433Y1 (ko) 엘이디 신호등 광원을 일정하게 유지시키기 위한전원공급회로
CN114390750A (zh) 一种用于植物照明的led驱动系统及植物照明系统

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: Holland Ian Deho Finn

Patentee after: KONINKLIJKE PHILIPS N.V.

Address before: Holland Ian Deho Finn

Patentee before: Koninklijke Philips Electronics N.V.

TR01 Transfer of patent right

Effective date of registration: 20170314

Address after: The city of Eindhoven in Holland

Patentee after: PHILIPS LIGHTING HOLDING B.V.

Address before: Holland Ian Deho Finn

Patentee before: KONINKLIJKE PHILIPS N.V.

TR01 Transfer of patent right
CP03 Change of name, title or address

Address after: Eindhoven

Patentee after: Signify Holdings Ltd.

Address before: The city of Eindhoven in Holland

Patentee before: PHILIPS LIGHTING HOLDING B.V.

CP03 Change of name, title or address
CX01 Expiry of patent term

Granted publication date: 20091104

CX01 Expiry of patent term