JP5937455B2 - Ｌｅｄ駆動回路 - Google Patents

Ｌｅｄ駆動回路 Download PDF

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Publication number
JP5937455B2
JP5937455B2 JP2012174908A JP2012174908A JP5937455B2 JP 5937455 B2 JP5937455 B2 JP 5937455B2 JP 2012174908 A JP2012174908 A JP 2012174908A JP 2012174908 A JP2012174908 A JP 2012174908A JP 5937455 B2 JP5937455 B2 JP 5937455B2
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Japan
Prior art keywords
current
adjusting unit
fet
resistor
led
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.)
Active
Application number
JP2012174908A
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English (en)
Japanese (ja)
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JP2013089591A (ja
JP2013089591A5 (enExample
Inventor
ジェ ヒュン ハン、
ジェ ヒュン ハン、
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.)
LG Innotek Co Ltd
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LG Innotek Co Ltd
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Publication date
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Publication of JP2013089591A publication Critical patent/JP2013089591A/ja
Publication of JP2013089591A5 publication Critical patent/JP2013089591A5/ja
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    • 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
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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]
    • H05B45/38—Switched mode power supply [SMPS] using boost 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]

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
  • Dc-Dc Converters (AREA)
JP2012174908A 2011-10-17 2012-08-07 Ｌｅｄ駆動回路 Active JP5937455B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110106109A KR102019051B1 (ko) 2011-10-17 2011-10-17 Ｌｅｄ 구동회로
KR10-2011-0106109 2011-10-17

Publications (3)

Publication Number Publication Date
JP2013089591A JP2013089591A (ja) 2013-05-13
JP2013089591A5 JP2013089591A5 (enExample) 2015-09-10
JP5937455B2 true JP5937455B2 (ja) 2016-06-22

Family

ID=48085540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012174908A Active JP5937455B2 (ja) 2011-10-17 2012-08-07 Ｌｅｄ駆動回路

Country Status (4)

Country Link
US (1) US8975833B2 (enExample)
JP (1) JP5937455B2 (enExample)
KR (1) KR102019051B1 (enExample)
TW (1) TWI576005B (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102651200B (zh) * 2011-03-30 2014-04-16 京东方科技集团股份有限公司 液晶背光源驱动电路
CN202454225U (zh) * 2011-10-28 2012-09-26 深圳市华星光电技术有限公司 Led背光驱动电路以及显示装置
US9107265B2 (en) * 2013-12-02 2015-08-11 Richtek Technology Corporation Light emitting device array billboard and control method thereof
CN103985359A (zh) * 2014-04-16 2014-08-13 京东方科技集团股份有限公司 一种背光源驱动电路和显示装置
CN103957644B (zh) * 2014-05-14 2017-04-26 深圳市华星光电技术有限公司 用于液晶显示设备的led背光源
US9420658B2 (en) * 2014-12-05 2016-08-16 Xenio Corporation Inrush energy control for a light emitter
CN106782349B (zh) * 2017-01-04 2019-01-22 深圳市华星光电技术有限公司 一种led背光驱动电路及液晶显示器
US10575377B2 (en) * 2017-11-22 2020-02-25 Semiconductor Components Industries, Llc Line ripple reducer
CN209218434U (zh) * 2018-09-25 2019-08-06 福建省亿宝光电科技有限公司 一种灯带电路

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5420780A (en) * 1993-12-30 1995-05-30 Omega Power Systems Apparatus for limiting inrush current
JP2008529177A (ja) * 2005-02-02 2008-07-31 キャップ−エックス・エックス・リミテッド 電源装置
KR20080055085A (ko) * 2006-12-14 2008-06-19 엘지이노텍 주식회사 인버터의 초기주파수 가변회로
KR20090104875A (ko) * 2007-01-22 2009-10-06 코닌클리즈케 필립스 일렉트로닉스 엔.브이. 유기 발광 다이오드 장치
CN101653045A (zh) * 2007-04-25 2010-02-17 奥斯兰姆有限公司 带有接通电流限制电路的照明设备
KR100889528B1 (ko) * 2007-06-27 2009-03-19 삼성에스디아이 주식회사 소프트 스타트 회로와 이를 포함하는 전원공급장치
US8022634B2 (en) * 2008-02-05 2011-09-20 Intersil Americas Inc. Method and system for dimming AC-powered light emitting diode (LED) lighting systems using conventional incandescent dimmers
JP2009283401A (ja) * 2008-05-26 2009-12-03 Panasonic Electric Works Co Ltd 電源装置および灯具、車両
WO2010031169A1 (en) * 2008-09-18 2010-03-25 E Craftsmen Corporation Configurable led driver/dimmer for solid state lighting applications
US8120273B2 (en) * 2008-10-28 2012-02-21 Visteon Global Technologies, Inc. Light control system with PWM duty cycle control using current signal feedback
JP2010129612A (ja) * 2008-11-25 2010-06-10 Panasonic Electric Works Co Ltd 点灯装置
US9167641B2 (en) * 2008-11-28 2015-10-20 Lightech Electronic Industries Ltd. Phase controlled dimming LED driver system and method thereof
KR101007035B1 (ko) * 2008-12-22 2011-01-12 엘지이노텍 주식회사 발광 다이오드용 전원 공급 장치
US8339055B2 (en) * 2009-08-03 2012-12-25 Intersil Americas Inc. Inrush current limiter for an LED driver
KR20110033485A (ko) * 2009-09-25 2011-03-31 (주)빅텍 돌입전류제한회로
JP2011151913A (ja) * 2010-01-20 2011-08-04 Mitsubishi Electric Corp 電源回路及び照明装置
JP5174061B2 (ja) * 2010-02-23 2013-04-03 三菱電機照明株式会社 電源装置及び照明器具
KR20120015232A (ko) * 2010-08-11 2012-02-21 삼성엘이디 주식회사 Ｌｅｄ 램프 및 ｌｅｄ 램프용 구동 회로

Also Published As

Publication number Publication date
TW201318470A (zh) 2013-05-01
KR20130041685A (ko) 2013-04-25
US20130093355A1 (en) 2013-04-18
JP2013089591A (ja) 2013-05-13
US8975833B2 (en) 2015-03-10
KR102019051B1 (ko) 2019-09-09
TWI576005B (zh) 2017-03-21

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