JP2011249031A - Led点灯装置 - Google Patents
Led点灯装置 Download PDFInfo
- Publication number
- JP2011249031A JP2011249031A JP2010118240A JP2010118240A JP2011249031A JP 2011249031 A JP2011249031 A JP 2011249031A JP 2010118240 A JP2010118240 A JP 2010118240A JP 2010118240 A JP2010118240 A JP 2010118240A JP 2011249031 A JP2011249031 A JP 2011249031A
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- Prior art keywords
- voltage
- lighting device
- winding
- circuit
- led lighting
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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]
- H05B45/385—Switched mode power supply [SMPS] using flyback 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
【解決手段】交流入力電圧を位相制御するトライアック調光器3、トライアック調光器に接続される複数の巻線を有するスイッチングトランスTの一次巻線Pとスイッチング素子Q1との直列回路、スイッチング素子をオンオフ制御する制御回路14、トランスの二次巻線Sに発生する電圧を第1整流素子D1で整流し第1平滑素子C1で平滑する整流平滑回路、整流平滑回路の出力に接続されるLED1a〜1n、LEDに流れる電流を検出して電流検出信号を出力する電流検出部7、第1整流素子がオンのときにトランスの二次巻線又はトランスの二次巻線に比例した電圧を発生するn次巻線(n≧3)に発生する交流入力電圧の位相比率に比例した電圧検出信号を出力する電圧検出部11、電流検出信号と電圧検出信号とに基づいた信号を増幅して制御回路に出力する増幅器13を有する。
【選択図】図1
Description
スイッチングトランスTの二次巻線SにはダイオードD6と抵抗R10と抵抗R11との直列回路が接続され、抵抗R10と抵抗R11との接続点には、抵抗R12とコンデンサC3との直列回路が接続される。抵抗R12とコンデンサC3との接続点は、演算増幅器OP2の非反転入力端子に接続される。コンデンサC3の他端と抵抗R11の他端とは、接地される。
3 トライアック調光器
5 全波整流回路
7 抵抗
11 電圧検出回路
13 誤差増幅器
14 制御回路
15 発振器
17 PWM回路
19 ドライブ回路
T スイッチングトランス
P 一次巻線
S 二次巻線
D 三次巻線
F 四次巻線
Q1 スイッチング素子
D1,D6,D7,D8 ダイオード
C1,C3,C4 コンデンサ
R1〜R3,R10〜R12 抵抗
OP1,OP2 演算増幅器
Claims (3)
- 交流入力電圧を位相制御するトライアック調光器と、
前記トライアック調光器に接続される複数の巻線を有するスイッチングトランスの一次巻線とスイッチング素子との直列回路と、
前記スイッチング素子をオンオフ制御する制御回路と、
前記トランスの二次巻線に発生する電圧を第1整流素子で整流し第1平滑素子で平滑する整流平滑回路と、
前記整流平滑回路の出力に接続されるLEDと、
前記LEDに流れる電流を検出して電流検出信号を出力する電流検出部と、
前記第1整流素子がオンのときに前記トランスの二次巻線又は前記トランスの二次巻線に比例した電圧を発生するn次巻線(n≧3)に発生する交流入力電圧の位相比率に比例した電圧検出信号を出力する電圧検出部と、
前記電流検出信号と前記電圧検出信号とに基づいた信号を増幅して前記制御回路に出力する増幅器と、
を有することを特徴とするLED点灯装置。 - 前記トランスのn次巻線(n≧3)に発生する電圧を第2整流素子で整流する整流回路を有することを特徴とする請求項1記載のLED点灯装置。
- 前記整流回路は、前記第2整流素子で整流された電圧を平滑する第2平滑素子を有し、前記第2平滑素子の出力を電源として前記制御回路に出力することを特徴とする請求項1又は請求項2記載のLED点灯装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010118240A JP5067443B2 (ja) | 2010-05-24 | 2010-05-24 | Led点灯装置 |
KR1020110039447A KR101232693B1 (ko) | 2010-05-24 | 2011-04-27 | 엘이디 점등장치 |
US13/108,332 US8456108B2 (en) | 2010-05-24 | 2011-05-16 | LED lighting apparatus |
CN2011101319241A CN102264179B (zh) | 2010-05-24 | 2011-05-20 | Led点亮装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010118240A JP5067443B2 (ja) | 2010-05-24 | 2010-05-24 | Led点灯装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011249031A true JP2011249031A (ja) | 2011-12-08 |
JP5067443B2 JP5067443B2 (ja) | 2012-11-07 |
Family
ID=44971950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010118240A Expired - Fee Related JP5067443B2 (ja) | 2010-05-24 | 2010-05-24 | Led点灯装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8456108B2 (ja) |
JP (1) | JP5067443B2 (ja) |
KR (1) | KR101232693B1 (ja) |
CN (1) | CN102264179B (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013164932A (ja) * | 2012-02-09 | 2013-08-22 | Mitsubishi Electric Corp | 点灯装置及びそれを備えた照明器具 |
KR101337241B1 (ko) | 2012-11-30 | 2013-12-05 | 주식회사 실리콘웍스 | 발광 다이오드 조명용 전원 장치 및 발광 다이오드 조명 장치 |
JP2015006109A (ja) * | 2013-06-24 | 2015-01-08 | サンケン電気株式会社 | Led駆動装置及びled点灯装置並びに誤差増幅回路 |
JP2021163524A (ja) * | 2020-03-30 | 2021-10-11 | 四変テック株式会社 | Led点灯装置及び照明器具 |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9232591B2 (en) | 2008-12-12 | 2016-01-05 | O2Micro Inc. | Circuits and methods for driving light sources |
US9030122B2 (en) | 2008-12-12 | 2015-05-12 | O2Micro, Inc. | Circuits and methods for driving LED light sources |
US9386653B2 (en) | 2008-12-12 | 2016-07-05 | O2Micro Inc | Circuits and methods for driving light sources |
US9253843B2 (en) | 2008-12-12 | 2016-02-02 | 02Micro Inc | Driving circuit with dimming controller for driving light sources |
CN103391006A (zh) | 2012-05-11 | 2013-11-13 | 凹凸电子(武汉)有限公司 | 光源驱动电路、控制电力转换器的控制器及方法 |
US8698419B2 (en) | 2010-03-04 | 2014-04-15 | O2Micro, Inc. | Circuits and methods for driving light sources |
IT1401152B1 (it) * | 2010-07-28 | 2013-07-12 | St Microelectronics Des & Appl | Apparato di controllo per diodi led. |
KR101978509B1 (ko) * | 2011-12-07 | 2019-05-15 | 매그나칩 반도체 유한회사 | Led 구동장치 |
JP5828074B2 (ja) * | 2012-02-13 | 2015-12-02 | パナソニックIpマネジメント株式会社 | 点灯装置および、これを用いた照明器具 |
US9426862B2 (en) * | 2012-04-12 | 2016-08-23 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LED backlight drive circuit, liquid crystal display device and driving method |
JP2014131391A (ja) * | 2012-12-28 | 2014-07-10 | Sanken Electric Co Ltd | 直流電源装置 |
DE112014001005B4 (de) * | 2013-02-27 | 2021-07-15 | Dialog Semiconductor Inc. | Ausgangsstromkompensation für Jitter in einer Eingangsspannung für dimmbare LED-Leuchten |
TWI496504B (zh) * | 2013-04-26 | 2015-08-11 | Unity Opto Technology Co Ltd | Variable power dimming control circuit |
KR102134043B1 (ko) | 2013-10-31 | 2020-07-14 | 솔루엠 (허페이) 세미컨덕터 씨오., 엘티디. | 발광 다이오드 구동 장치 |
US9119254B2 (en) * | 2013-12-16 | 2015-08-25 | Richtek Technology Corporation | Light emitting device power supply circuit with dimming function and control circuit thereof |
KR102143936B1 (ko) * | 2014-03-10 | 2020-08-12 | 삼성전자주식회사 | 발광 구동 장치 및 그 제어 방법 |
CN105101556B (zh) * | 2015-08-21 | 2017-12-12 | 京东方光科技有限公司 | Led 调光驱动电路 |
TWI635702B (zh) * | 2017-11-23 | 2018-09-11 | 晶豪科技股份有限公司 | 用於補償誤差放大器之輸入電壓偏移的補償電路 |
CN110034734B (zh) * | 2018-01-11 | 2023-04-07 | 晶豪科技股份有限公司 | 用于补偿误差放大器的输入偏压的补偿电路 |
EP3871469A4 (en) * | 2018-10-24 | 2022-07-27 | Eprad, Inc. | 120 VAC WIRING ARCHITECTURE RE-CONVERSION SYSTEM AND METHOD FOR UPGRADABLE LOW VOLTAGE DC TWO-WIRE LED DIMMING |
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JP2006210835A (ja) * | 2005-01-31 | 2006-08-10 | Matsushita Electric Works Ltd | 発光ダイオード駆動装置並びにそれを用いた照明器具、車室内用照明装置、車両用照明装置 |
JP2007035403A (ja) * | 2005-07-26 | 2007-02-08 | Matsushita Electric Works Ltd | 発光ダイオード用直流電源装置およびそれを用いる照明器具 |
JP2011003326A (ja) * | 2009-06-17 | 2011-01-06 | Shihen Tech Corp | Led点灯装置 |
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JP2004327152A (ja) | 2003-04-23 | 2004-11-18 | Toshiba Lighting & Technology Corp | Led点灯装置およびled照明器具 |
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2010
- 2010-05-24 JP JP2010118240A patent/JP5067443B2/ja not_active Expired - Fee Related
-
2011
- 2011-04-27 KR KR1020110039447A patent/KR101232693B1/ko not_active IP Right Cessation
- 2011-05-16 US US13/108,332 patent/US8456108B2/en not_active Expired - Fee Related
- 2011-05-20 CN CN2011101319241A patent/CN102264179B/zh not_active Expired - Fee Related
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JP2006210835A (ja) * | 2005-01-31 | 2006-08-10 | Matsushita Electric Works Ltd | 発光ダイオード駆動装置並びにそれを用いた照明器具、車室内用照明装置、車両用照明装置 |
JP2007035403A (ja) * | 2005-07-26 | 2007-02-08 | Matsushita Electric Works Ltd | 発光ダイオード用直流電源装置およびそれを用いる照明器具 |
JP2011003326A (ja) * | 2009-06-17 | 2011-01-06 | Shihen Tech Corp | Led点灯装置 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013164932A (ja) * | 2012-02-09 | 2013-08-22 | Mitsubishi Electric Corp | 点灯装置及びそれを備えた照明器具 |
KR101337241B1 (ko) | 2012-11-30 | 2013-12-05 | 주식회사 실리콘웍스 | 발광 다이오드 조명용 전원 장치 및 발광 다이오드 조명 장치 |
US9295127B2 (en) | 2012-11-30 | 2016-03-22 | Silicon Works Co., Ltd. | Power supply apparatus for LED lighting and LED lighting apparatus using the power supply apparatus |
JP2015006109A (ja) * | 2013-06-24 | 2015-01-08 | サンケン電気株式会社 | Led駆動装置及びled点灯装置並びに誤差増幅回路 |
JP2021163524A (ja) * | 2020-03-30 | 2021-10-11 | 四変テック株式会社 | Led点灯装置及び照明器具 |
JP7411477B2 (ja) | 2020-03-30 | 2024-01-11 | 四変テック株式会社 | Led点灯装置及び照明器具 |
Also Published As
Publication number | Publication date |
---|---|
CN102264179B (zh) | 2013-12-18 |
JP5067443B2 (ja) | 2012-11-07 |
KR101232693B1 (ko) | 2013-02-13 |
CN102264179A (zh) | 2011-11-30 |
US20110285307A1 (en) | 2011-11-24 |
KR20110128731A (ko) | 2011-11-30 |
US8456108B2 (en) | 2013-06-04 |
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