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GB2506500B - Circuits and methods for driving light sources - Google Patents

Circuits and methods for driving light sources

Info

Publication number
GB2506500B
GB2506500B GB1313787.2A GB201313787A GB2506500B GB 2506500 B GB2506500 B GB 2506500B GB 201313787 A GB201313787 A GB 201313787A GB 2506500 B GB2506500 B GB 2506500B
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
GB1313787.2A
Other versions
GB201313787D0 (en
GB2506500A (en
Inventor
Yan Tiesheng
Liu Xueshan
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 CN201210369122.9A external-priority patent/CN103716934B/en
Priority claimed from US13/663,165 external-priority patent/US20130049621A1/en
Application filed by O2Micro Inc filed Critical O2Micro Inc
Publication of GB201313787D0 publication Critical patent/GB201313787D0/en
Publication of GB2506500A publication Critical patent/GB2506500A/en
Application granted granted Critical
Publication of GB2506500B publication Critical patent/GB2506500B/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]
    • H05B45/10—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]
    • 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
    • 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
GB1313787.2A 2012-09-28 2013-08-01 Circuits and methods for driving light sources Expired - Fee Related GB2506500B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210369122.9A CN103716934B (en) 2012-09-28 2012-09-28 The drive circuit of driving light source, method and controller
US13/663,165 US20130049621A1 (en) 2010-03-04 2012-10-29 Circuits and methods for driving light sources

Publications (3)

Publication Number Publication Date
GB201313787D0 GB201313787D0 (en) 2013-09-18
GB2506500A GB2506500A (en) 2014-04-02
GB2506500B true GB2506500B (en) 2016-04-13

Family

ID=49224002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1313787.2A Expired - Fee Related GB2506500B (en) 2012-09-28 2013-08-01 Circuits and methods for driving light sources

Country Status (1)

Country Link
GB (1) GB2506500B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI737242B (en) * 2019-03-29 2021-08-21 美商亮銳公司 Light emitting device, light emitting system and method of operating a light emitting diode driver

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120081029A1 (en) * 2010-10-04 2012-04-05 Jinho Choi Average Output Current Estimation Using Primary-Side Sensing
US20120293087A1 (en) * 2011-04-21 2012-11-22 Kenji Matsuda Lighting driver circuit and light fixture
US20130033197A1 (en) * 2011-08-05 2013-02-07 Dongbu Hitek Co., Ltd. Isolated flyback converter for light emitting diode driver
US20130049621A1 (en) * 2010-03-04 2013-02-28 O2Micro Inc. Circuits and methods for driving light sources

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130049621A1 (en) * 2010-03-04 2013-02-28 O2Micro Inc. Circuits and methods for driving light sources
US20120081029A1 (en) * 2010-10-04 2012-04-05 Jinho Choi Average Output Current Estimation Using Primary-Side Sensing
US20120293087A1 (en) * 2011-04-21 2012-11-22 Kenji Matsuda Lighting driver circuit and light fixture
US20130033197A1 (en) * 2011-08-05 2013-02-07 Dongbu Hitek Co., Ltd. Isolated flyback converter for light emitting diode driver

Also Published As

Publication number Publication date
GB201313787D0 (en) 2013-09-18
GB2506500A (en) 2014-04-02

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Legal Events

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

Effective date: 20170801