EP2675246A3 - Semiconductor-light-source control device - Google Patents

Semiconductor-light-source control device Download PDF

Info

Publication number
EP2675246A3
EP2675246A3 EP20130171423 EP13171423A EP2675246A3 EP 2675246 A3 EP2675246 A3 EP 2675246A3 EP 20130171423 EP20130171423 EP 20130171423 EP 13171423 A EP13171423 A EP 13171423A EP 2675246 A3 EP2675246 A3 EP 2675246A3
Authority
EP
European Patent Office
Prior art keywords
semiconductor
target value
driving current
control device
state
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Withdrawn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
EP20130171423
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2675246A2 (en
Inventor
Kentarou Murakami
Masaru Sasaki
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.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
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 Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Publication of EP2675246A2 publication Critical patent/EP2675246A2/en
Publication of EP2675246A3 publication Critical patent/EP2675246A3/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Withdrawn legal-status Critical Current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]
    • H05B45/10—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]

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP20130171423 2012-06-12 2013-06-11 Semiconductor-light-source control device Withdrawn EP2675246A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012132575A JP2013258003A (ja) 2012-06-12 2012-06-12 半導体光源制御装置

Publications (2)

Publication Number Publication Date
EP2675246A2 EP2675246A2 (en) 2013-12-18
EP2675246A3 true EP2675246A3 (en) 2015-05-13

Family

ID=48607123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20130171423 Withdrawn EP2675246A3 (en) 2012-06-12 2013-06-11 Semiconductor-light-source control device

Country Status (3)

Country Link
EP (1) EP2675246A3 (zh)
JP (1) JP2013258003A (zh)
CN (1) CN103491670B (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103747569B (zh) * 2013-12-25 2015-11-25 矽力杰半导体技术(杭州)有限公司 一种pwm调光控制方法、控制电路及应用其的led驱动电路
US9295129B1 (en) * 2015-04-02 2016-03-22 Osram Sylvania Inc. Turn on optimization
CN104853486A (zh) * 2015-04-27 2015-08-19 欧普照明股份有限公司 一种基于pwm的调光电路
JP6667154B2 (ja) 2015-07-09 2020-03-18 パナソニックＩｐマネジメント株式会社 点灯装置、車両用照明装置、及びそれを用いた車両
JP6726668B2 (ja) * 2015-08-04 2020-07-22 株式会社小糸製作所 車両用灯具および光源の点灯回路
JP6563315B2 (ja) * 2015-11-17 2019-08-21 新日本無線株式会社 Ｌｅｄ制御装置
JP6805808B2 (ja) * 2016-12-26 2020-12-23 セイコーエプソン株式会社 発光制御回路、光源装置、及び、電子機器
JP7271554B2 (ja) * 2018-08-10 2023-05-11 株式会社小糸製作所 点灯回路および車両用灯具

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080224633A1 (en) * 2007-03-12 2008-09-18 Cirrus Logic, Inc. Lighting System with Lighting Dimmer Output Mapping
US20120074866A1 (en) * 2010-09-25 2012-03-29 Wei-Qiang Zhang Lighting apparatus and control method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005332586A (ja) * 2004-05-18 2005-12-02 Calsonic Kansei Corp 照明調光装置
JP2008047494A (ja) * 2006-08-21 2008-02-28 Yokogawa Electric Corp 調光制御方法および調光制御装置および照明装置
JP5457684B2 (ja) 2009-01-20 2014-04-02 株式会社小糸製作所 車両用灯具の点灯制御装置
CN102300355B (zh) * 2010-06-25 2013-12-25 英飞特电子（杭州）股份有限公司 一种led调光系统

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080224633A1 (en) * 2007-03-12 2008-09-18 Cirrus Logic, Inc. Lighting System with Lighting Dimmer Output Mapping
US20120074866A1 (en) * 2010-09-25 2012-03-29 Wei-Qiang Zhang Lighting apparatus and control method thereof

Also Published As

Publication number Publication date
CN103491670B (zh) 2016-05-18
JP2013258003A (ja) 2013-12-26
EP2675246A2 (en) 2013-12-18
CN103491670A (zh) 2014-01-01

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