EP2611263A3 - Circuits and methods for driving LED light sources - Google Patents

Circuits and methods for driving LED light sources Download PDF

Info

Publication number
EP2611263A3
EP2611263A3 EP12180381.1A EP12180381A EP2611263A3 EP 2611263 A3 EP2611263 A3 EP 2611263A3 EP 12180381 A EP12180381 A EP 12180381A EP 2611263 A3 EP2611263 A3 EP 2611263A3
Authority
EP
European Patent Office
Prior art keywords
power
operable
led light
switch
transformer
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.)
Withdrawn
Application number
EP12180381.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2611263A2 (en
Inventor
Yan Tiesheng
Lin Feng
Li Youling
Kuo Ching-Chuan
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.)
O2Micro Inc
Original Assignee
O2Micro Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201110447599.XA external-priority patent/CN102548143B/zh
Priority claimed from US13/369,620 external-priority patent/US9030122B2/en
Application filed by O2Micro Inc filed Critical O2Micro Inc
Publication of EP2611263A2 publication Critical patent/EP2611263A2/en
Publication of EP2611263A3 publication Critical patent/EP2611263A3/en
Withdrawn legal-status Critical Current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]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter 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
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output
    • 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]
    • H05B45/375—Switched mode power supply [SMPS] using buck topology

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Dc-Dc Converters (AREA)
  • Led Devices (AREA)
EP12180381.1A 2011-12-28 2012-08-14 Circuits and methods for driving LED light sources Withdrawn EP2611263A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110447599.XA CN102548143B (zh) 2011-12-28 2011-12-28 对led光源进行电能控制的驱动电路、调光控制器和方法
US13/369,620 US9030122B2 (en) 2008-12-12 2012-02-09 Circuits and methods for driving LED light sources

Publications (2)

Publication Number Publication Date
EP2611263A2 EP2611263A2 (en) 2013-07-03
EP2611263A3 true EP2611263A3 (en) 2014-03-05

Family

ID=46800026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12180381.1A Withdrawn EP2611263A3 (en) 2011-12-28 2012-08-14 Circuits and methods for driving LED light sources

Country Status (4)

Country Link
EP (1) EP2611263A3 (enrdf_load_stackoverflow)
JP (1) JP2013140931A (enrdf_load_stackoverflow)
BR (1) BR102012033492A2 (enrdf_load_stackoverflow)
IN (1) IN2012DE00931A (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014065389A1 (en) 2012-10-25 2014-05-01 Semiconductor Energy Laboratory Co., Ltd. Central control system
CN104902610B (zh) * 2014-03-04 2017-07-21 通嘉科技股份有限公司 调光控制方法与相关的背光控制器
US9801246B2 (en) 2014-04-24 2017-10-24 Nanogrid Limited Dimmable LED light
EP3007521A3 (en) * 2014-10-08 2016-06-01 O2Micro, Inc. Driving circuit with dimming controller for driving light sources
SK972016A3 (sk) * 2016-11-09 2018-06-01 Miroslav Labaš Spôsob postupného rozsvecovania a zhasínania žiaroviek každého druhu
CN108430138B (zh) * 2018-05-17 2024-07-12 温州市麦特力克电器有限公司 一种调光电路、调光装置及调光控制方法
CN108834263B (zh) * 2018-07-27 2023-09-12 深圳市明微电子股份有限公司 一种电压可调的调光控制电路及系统
CN109257848A (zh) * 2018-10-22 2019-01-22 上海炬佑智能科技有限公司 光源驱动电路、光源驱动方法以及飞行时间测距传感器
CN109661075B (zh) * 2019-01-28 2024-09-13 上海电力学院 单级ac-dc多输出无电解电容大功率led驱动电路
CN111885764B (zh) * 2020-07-15 2022-05-17 宁波公牛光电科技有限公司 电源电路及灯具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100148691A1 (en) * 2008-12-12 2010-06-17 O2Micro, Inc. Driving circuit with dimming controller for driving light sources
US7759881B1 (en) * 2008-03-31 2010-07-20 Cirrus Logic, Inc. LED lighting system with a multiple mode current control dimming strategy
US20100225249A1 (en) * 2009-03-04 2010-09-09 Richtek Technology Corporation LED Driver with Direct AC-DC Conversion and Control, and Method and Integrated Circuit Therefor
US20110109230A1 (en) * 2009-11-11 2011-05-12 Osram Sylvania Inc. Ballast Circuit for LED-Based Lamp Including Power Factor Correction with Protective Isolation
US20110227496A1 (en) * 2008-12-12 2011-09-22 O2Micro, Inc. Circuits and methods for driving light sources

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7759881B1 (en) * 2008-03-31 2010-07-20 Cirrus Logic, Inc. LED lighting system with a multiple mode current control dimming strategy
US20100148691A1 (en) * 2008-12-12 2010-06-17 O2Micro, Inc. Driving circuit with dimming controller for driving light sources
US20110227496A1 (en) * 2008-12-12 2011-09-22 O2Micro, Inc. Circuits and methods for driving light sources
US20100225249A1 (en) * 2009-03-04 2010-09-09 Richtek Technology Corporation LED Driver with Direct AC-DC Conversion and Control, and Method and Integrated Circuit Therefor
US20110109230A1 (en) * 2009-11-11 2011-05-12 Osram Sylvania Inc. Ballast Circuit for LED-Based Lamp Including Power Factor Correction with Protective Isolation

Also Published As

Publication number Publication date
EP2611263A2 (en) 2013-07-03
JP2013140931A (ja) 2013-07-18
IN2012DE00931A (enrdf_load_stackoverflow) 2015-09-04
BR102012033492A2 (pt) 2015-05-05

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