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GB2503316B - Circuits and methods for driving light sources - Google Patents

Circuits and methods for driving light sources

Info

Publication number
GB2503316B
GB2503316B GB1306005.8A GB201306005A GB2503316B GB 2503316 B GB2503316 B GB 2503316B GB 201306005 A GB201306005 A GB 201306005A GB 2503316 B GB2503316 B GB 2503316B
Authority
GB
United Kingdom
Prior art keywords
circuits
methods
light sources
driving light
driving
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
GB1306005.8A
Other versions
GB201306005D0 (en
GB2503316A (en
Inventor
Yung Lin Lin
Ching-Chuan Kuo
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 US13/530,935 external-priority patent/US20120262079A1/en
Application filed by O2Micro Inc filed Critical O2Micro Inc
Publication of GB201306005D0 publication Critical patent/GB201306005D0/en
Publication of GB2503316A publication Critical patent/GB2503316A/en
Application granted granted Critical
Publication of GB2503316B publication Critical patent/GB2503316B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • 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]
    • H05B45/375—Switched mode power supply [SMPS] using buck 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]
GB1306005.8A 2012-06-22 2013-04-03 Circuits and methods for driving light sources Expired - Fee Related GB2503316B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/530,935 US20120262079A1 (en) 2010-03-04 2012-06-22 Circuits and methods for driving light sources

Publications (3)

Publication Number Publication Date
GB201306005D0 GB201306005D0 (en) 2013-05-15
GB2503316A GB2503316A (en) 2013-12-25
GB2503316B true GB2503316B (en) 2015-10-14

Family

ID=48445191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1306005.8A Expired - Fee Related GB2503316B (en) 2012-06-22 2013-04-03 Circuits and methods for driving light sources

Country Status (4)

Country Link
JP (1) JP2014007143A (en)
CN (1) CN103517506B (en)
GB (1) GB2503316B (en)
TW (1) TWI505746B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6256171B2 (en) * 2014-04-18 2018-01-10 三菱電機株式会社 Lighting device and lighting apparatus
GB2544820B (en) * 2015-11-30 2021-03-03 Tridonic Gmbh & Co Kg A low voltage power supply using an earth connection on a terminal block
CN105430795A (en) * 2015-12-11 2016-03-23 成都翰道科技有限公司 Energy saving control system of intelligent LED lamp based on compound double-order filter circuit
CN107301835B (en) * 2016-04-13 2019-09-17 群创光电股份有限公司 LED display
KR101923158B1 (en) * 2017-12-29 2019-02-27 주식회사 디에스이 multiple stages dimming device of LED light using the wall-switch
JP7016018B2 (en) * 2018-05-31 2022-02-04 パナソニックＩｐマネジメント株式会社 Lighting device and lighting equipment

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6304464B1 (en) * 1999-07-07 2001-10-16 U.S. Philips Corporation Flyback as LED driver
US20070047276A1 (en) * 2005-08-31 2007-03-01 Yung-Lin Lin Power supply topologies for inverter operations and power factor correction operations
US20100141177A1 (en) * 2008-12-10 2010-06-10 Linear Technology Corporation Dimmer-controlled leds using flyback converter with high power factor
CN101801129A (en) * 2010-01-28 2010-08-11 海洋王照明科技股份有限公司 LED low-power drive circuit and LED lamp
WO2010148329A1 (en) * 2009-06-19 2010-12-23 Robertson Transformer Co. Multimodal led power supply with wide compliance voltage and safety controlled output
CN102118906A (en) * 2010-01-04 2011-07-06 叶明宝 DC supply mode of LED street lamp
US20110298374A1 (en) * 2011-06-07 2011-12-08 Switch Bulb Company, Inc. Thermal protection circuit for an led bulb
CN102438377A (en) * 2011-12-20 2012-05-02 成都成电硅海科技股份有限公司 High-power factor LED constant current driving circuit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6784622B2 (en) * 2001-12-05 2004-08-31 Lutron Electronics Company, Inc. Single switch electronic dimming ballast
JP3553042B2 (en) * 2001-12-03 2004-08-11 サンケン電気株式会社 Switching power supply device and driving method thereof
CN102014540B (en) * 2010-03-04 2011-12-28 凹凸电子（武汉）有限公司 Drive circuit and controller for controlling electric power of light source
US8304999B2 (en) * 2009-06-08 2012-11-06 Sunpaltech Co., Ltd. LED controlling driver and controlling method thereof
US8233292B2 (en) * 2010-02-25 2012-07-31 O2Micro, Inc. Controllers, systems and methods for controlling power of light sources
TW201201621A (en) * 2010-06-23 2012-01-01 Solytech Entpr Coropration Power supply device of LED lamp
CN102332814B (en) * 2011-09-14 2013-12-18 矽力杰半导体技术(杭州)有限公司 Power factor correction control circuit for reducing EMI (electro magnetic interference)

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6304464B1 (en) * 1999-07-07 2001-10-16 U.S. Philips Corporation Flyback as LED driver
US20070047276A1 (en) * 2005-08-31 2007-03-01 Yung-Lin Lin Power supply topologies for inverter operations and power factor correction operations
US20100141177A1 (en) * 2008-12-10 2010-06-10 Linear Technology Corporation Dimmer-controlled leds using flyback converter with high power factor
WO2010148329A1 (en) * 2009-06-19 2010-12-23 Robertson Transformer Co. Multimodal led power supply with wide compliance voltage and safety controlled output
CN102118906A (en) * 2010-01-04 2011-07-06 叶明宝 DC supply mode of LED street lamp
CN101801129A (en) * 2010-01-28 2010-08-11 海洋王照明科技股份有限公司 LED low-power drive circuit and LED lamp
US20110298374A1 (en) * 2011-06-07 2011-12-08 Switch Bulb Company, Inc. Thermal protection circuit for an led bulb
CN102438377A (en) * 2011-12-20 2012-05-02 成都成电硅海科技股份有限公司 High-power factor LED constant current driving circuit

Also Published As

Publication number Publication date
JP2014007143A (en) 2014-01-16
GB201306005D0 (en) 2013-05-15
GB2503316A (en) 2013-12-25
CN103517506A (en) 2014-01-15
TW201401922A (en) 2014-01-01
TWI505746B (en) 2015-10-21
CN103517506B (en) 2016-05-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170403