JP6252231B2 - Led点灯装置 - Google Patents
Led点灯装置 Download PDFInfo
- Publication number
- JP6252231B2 JP6252231B2 JP2014031356A JP2014031356A JP6252231B2 JP 6252231 B2 JP6252231 B2 JP 6252231B2 JP 2014031356 A JP2014031356 A JP 2014031356A JP 2014031356 A JP2014031356 A JP 2014031356A JP 6252231 B2 JP6252231 B2 JP 6252231B2
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- JP
- Japan
- Prior art keywords
- current
- switching element
- led
- lighting device
- circuit
- 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.)
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- 239000003990 capacitor Substances 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 18
- 230000001172 regenerating effect Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims 1
- 239000013256 coordination polymer Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
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
- H05B45/395—Linear regulators
- H05B45/397—Current mirror 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]
- H05B45/10—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]
-
- 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]
Description
12 三角波発振器
VIN 直流電源
Q1,Q2,Q6 スイッチング素子
Q3 MOSFET
R1 電流検出抵抗
D1 回生ダイオード
LED 発光ダイオード
L1 インダクタ
OP1,OP2 オペアンプ
R2,R3 抵抗
CP コンパレータ
DRV ドライバ
INV インバータ
IS 定電流源
D2 ダイオード
MC カレントミラー回路
Q4,Q5 トランジスタ
Claims (3)
- 直流電源と、
前記直流電源の両端にLEDとインダクタとスイッチング素子と電流検出抵抗とか直列に接続された直列回路と、
前記LEDと前記インダクタとの直列回路に並列に接続された回生ダイオードと、
前記スイッチング素子がオン時に前記LEDに流れる電流と所定の定電流との差電流で充放電されるコンデンサと、
前記スイッチング素子をオンオフ制御し且つ前記コンデンサの電圧に基づき前記スイッチング素子のオン期間の電流平均値が一定になるようにPWM制御して前記LEDに流れる電流を一定に制御するPWM制御回路と、
を備えることを特徴とするLED点灯装置。 - 前記PWM制御回路は、
前記電流検出抵抗に接続された電流検出用のオペアンプと、
前記オペアンプの出力と前記コンデンサとを結ぶ共通ラインに接続され、前記スイッチング素子に同期してオン/オフする定電流を発生する定電流発生回路と、
三角波信号を発生する三角波発振器と、
前記共通ラインの電圧と前記三角波発振器からの三角波信号とを比較することによりPWM信号を生成するコンパレータと、
を備えることを特徴とする請求項1記載のLED点灯装置。 - 光出力を調整するための調光信号を生成する可変直流電源を備え、
前記定電流発生回路は、前記可変直流電源からの調光信号に応じて前記共通ラインに流す電流を調整することを特徴とする請求項2記載のLED点灯装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014031356A JP6252231B2 (ja) | 2014-02-21 | 2014-02-21 | Led点灯装置 |
CN201510062489.XA CN104869689B (zh) | 2014-02-21 | 2015-02-06 | Led点亮装置 |
US14/627,061 US9338844B2 (en) | 2014-02-21 | 2015-02-20 | LED lighting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014031356A JP6252231B2 (ja) | 2014-02-21 | 2014-02-21 | Led点灯装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015156335A JP2015156335A (ja) | 2015-08-27 |
JP6252231B2 true JP6252231B2 (ja) | 2017-12-27 |
Family
ID=53883613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014031356A Active JP6252231B2 (ja) | 2014-02-21 | 2014-02-21 | Led点灯装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9338844B2 (ja) |
JP (1) | JP6252231B2 (ja) |
CN (1) | CN104869689B (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6252231B2 (ja) * | 2014-02-21 | 2017-12-27 | サンケン電気株式会社 | Led点灯装置 |
JP6504447B2 (ja) * | 2015-04-03 | 2019-04-24 | パナソニックIpマネジメント株式会社 | 点灯装置、照明装置および看板装置 |
CN105554938A (zh) * | 2015-12-18 | 2016-05-04 | 成都飞凯瑞科技有限公司 | 一种led灯用智能控制系统 |
CN105517232A (zh) * | 2015-12-18 | 2016-04-20 | 成都飞凯瑞科技有限公司 | 一种led灯用智能光控系统 |
CN105517231A (zh) * | 2015-12-18 | 2016-04-20 | 成都飞凯瑞科技有限公司 | 一种led灯用混合电路的智能控制系统 |
CN107277962B (zh) * | 2016-04-06 | 2019-04-02 | 普诚科技股份有限公司 | 电流控制电路 |
CN106658837A (zh) * | 2016-11-29 | 2017-05-10 | 北京小米移动软件有限公司 | Led驱动电路、led调节电路和led模组 |
US10123384B1 (en) * | 2017-09-22 | 2018-11-06 | Linear Technology Holding, LLC | LED dimming |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU1889201A (en) * | 1999-12-14 | 2001-06-25 | Takion Co., Ltd. | Power supply and led lamp device |
JP4017960B2 (ja) * | 2002-10-24 | 2007-12-05 | 日本テキサス・インスツルメンツ株式会社 | 駆動回路 |
KR100628716B1 (ko) * | 2005-02-02 | 2006-09-28 | 삼성전자주식회사 | Led구동장치 |
US8665922B2 (en) * | 2008-10-31 | 2014-03-04 | Sanyo Electric Co., Ltd. | Driver circuit of light-emitting element |
JP5112258B2 (ja) * | 2008-10-31 | 2013-01-09 | シャープ株式会社 | スイッチング制御回路及びこれを用いたスイッチング電源装置 |
JP2010170845A (ja) * | 2009-01-22 | 2010-08-05 | Panasonic Electric Works Co Ltd | 電源装置及びそれを用いた照明器具 |
CN101621872A (zh) * | 2009-03-19 | 2010-01-06 | 青岛海信电器股份有限公司 | 驱动电路及投影仪 |
US8288953B1 (en) * | 2010-01-19 | 2012-10-16 | Texas Instruments Incorporated | Buck constant average current regulation of light emitting diodes |
JP5508095B2 (ja) | 2010-03-30 | 2014-05-28 | パナソニック株式会社 | 点灯装置及びそれを用いた照明器具、照明システム |
US8629630B2 (en) * | 2010-05-25 | 2014-01-14 | Green Solution Technology Co., Ltd. | LED driving circuit and control circuit |
EP2410821B1 (en) * | 2010-07-20 | 2014-01-08 | Panasonic Corporation | Lighting device of semiconductor light-emitting element and illumination fixture using the same |
CN102468748A (zh) * | 2010-11-19 | 2012-05-23 | 中南民族大学 | 储能电容开环pwm控制恒流充电装置 |
JP5796206B2 (ja) * | 2011-01-28 | 2015-10-21 | パナソニックIpマネジメント株式会社 | スイッチング電源回路とそれを用いた半導体発光素子の点灯装置及び照明器具 |
TWI465148B (zh) * | 2011-03-17 | 2014-12-11 | Green Solution Tech Co Ltd | 發光二極體驅動電路及發光二極體驅動控制器 |
JP5760176B2 (ja) * | 2011-03-23 | 2015-08-05 | パナソニックIpマネジメント株式会社 | 固体光源点灯装置およびそれを用いた照明器具と照明システム |
US20120286750A1 (en) * | 2011-05-10 | 2012-11-15 | Peng Xu | Switching regulators with adaptive clock generators and associated methods of control |
JP5973164B2 (ja) * | 2011-12-22 | 2016-08-23 | ローム株式会社 | 発光素子駆動用のスイッチング電源の制御回路、およびそれを用いた発光装置および電子機器 |
CN102611316B (zh) * | 2012-04-01 | 2014-07-02 | 绍兴恒力特微电子有限公司 | 一种反激变换器控制恒流输出电路 |
EP2709426A3 (en) * | 2012-09-14 | 2017-04-19 | Panasonic Intellectual Property Management Co., Ltd. | Solid-state light-emitting element drive device, lighting system and lighting fixture |
JP6152736B2 (ja) * | 2013-08-02 | 2017-06-28 | パナソニックIpマネジメント株式会社 | 点灯装置及び照明器具 |
JP6252231B2 (ja) * | 2014-02-21 | 2017-12-27 | サンケン電気株式会社 | Led点灯装置 |
-
2014
- 2014-02-21 JP JP2014031356A patent/JP6252231B2/ja active Active
-
2015
- 2015-02-06 CN CN201510062489.XA patent/CN104869689B/zh active Active
- 2015-02-20 US US14/627,061 patent/US9338844B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20150245432A1 (en) | 2015-08-27 |
CN104869689A (zh) | 2015-08-26 |
JP2015156335A (ja) | 2015-08-27 |
CN104869689B (zh) | 2017-11-21 |
US9338844B2 (en) | 2016-05-10 |
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