CN113924661B - Led驱动电路 - Google Patents

Led驱动电路 Download PDF

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Publication number
CN113924661B
CN113924661B CN202080039431.2A CN202080039431A CN113924661B CN 113924661 B CN113924661 B CN 113924661B CN 202080039431 A CN202080039431 A CN 202080039431A CN 113924661 B CN113924661 B CN 113924661B
Authority
CN
China
Prior art keywords
resistor
npn transistor
ptc thermistor
switching element
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
CN202080039431.2A
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English (en)
Chinese (zh)
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CN113924661A (zh
Inventor
西乡有民
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of CN113924661A publication Critical patent/CN113924661A/zh
Application granted granted Critical
Publication of CN113924661B publication Critical patent/CN113924661B/zh
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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
    • H05B45/345—Current stabilisation; Maintaining constant current
    • 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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details

Landscapes

  • Led Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
CN202080039431.2A 2019-05-28 2020-05-12 Led驱动电路 Active CN113924661B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019099280 2019-05-28
JP2019-099280 2019-05-28
PCT/JP2020/019016 WO2020241247A1 (ja) 2019-05-28 2020-05-12 Ｌｅｄ駆動回路

Publications (2)

Publication Number Publication Date
CN113924661A CN113924661A (zh) 2022-01-11
CN113924661B true CN113924661B (zh) 2024-02-13

Family

ID=73553991

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080039431.2A Active CN113924661B (zh) 2019-05-28 2020-05-12 Led驱动电路

Country Status (5)

Country Link
US (1) US11785686B2 (https=)
JP (1) JP7184183B2 (https=)
CN (1) CN113924661B (https=)
DE (1) DE112020002722B4 (https=)
WO (1) WO2020241247A1 (https=)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006222219A (ja) * 2005-02-09 2006-08-24 Nec Viewtechnology Ltd Ｌｅｄ駆動回路
JP2010283395A (ja) * 2008-08-06 2010-12-16 Sharp Corp Ｌｅｄ駆動回路
CN102292914A (zh) * 2009-08-27 2011-12-21 富士电机株式会社 半导体驱动装置
CN207705762U (zh) * 2017-12-29 2018-08-07 福建省苍乐电子企业有限公司 一种过温保护电路
CN108954022A (zh) * 2017-05-22 2018-12-07 通用电气照明解决方案有限公司 Led灯及应用于该led灯的温度控制电路

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0832361A (ja) 1994-07-14 1996-02-02 Toyota Autom Loom Works Ltd 保護装置付き増幅回路
JPH09325719A (ja) * 1996-05-31 1997-12-16 Sanyo Electric Co Ltd 太陽電池型表示装置
JPH11298044A (ja) * 1998-04-16 1999-10-29 Sony Corp 光源駆動回路
JP2001339286A (ja) 2000-05-26 2001-12-07 Atsumi Electric Co Ltd ビームセンサの投光回路
US8111011B1 (en) 2007-01-11 2012-02-07 Leotek Electronics Corporation LED luminaire with improved life and operation management
JP4978547B2 (ja) 2008-04-24 2012-07-18 豊田合成株式会社 Ｌｅｄ駆動回路およびｌｅｄ照明装置
JP4649504B2 (ja) * 2008-08-06 2011-03-09 シャープ株式会社 Ｌｅｄ駆動回路
SI23077A (sl) 2009-06-03 2010-12-31 Technoplast D.O.O. Vezje za temperaturno krmiljenje led diode
US8878443B2 (en) * 2012-04-11 2014-11-04 Osram Sylvania Inc. Color correlated temperature correction for LED strings
JP2014146423A (ja) 2013-01-25 2014-08-14 Panasonic Corp 電流バイパス回路、照明用光源及び照明装置
CN205883643U (zh) 2015-10-17 2017-01-11 广东瑞德智能科技股份有限公司 一种led灯简易式过热及过流保护电路
CN110945364B (zh) * 2017-08-05 2021-08-03 株式会社村田制作所 风速测定装置和风量测定装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006222219A (ja) * 2005-02-09 2006-08-24 Nec Viewtechnology Ltd Ｌｅｄ駆動回路
JP2010283395A (ja) * 2008-08-06 2010-12-16 Sharp Corp Ｌｅｄ駆動回路
CN102292914A (zh) * 2009-08-27 2011-12-21 富士电机株式会社 半导体驱动装置
CN108954022A (zh) * 2017-05-22 2018-12-07 通用电气照明解决方案有限公司 Led灯及应用于该led灯的温度控制电路
CN207705762U (zh) * 2017-12-29 2018-08-07 福建省苍乐电子企业有限公司 一种过温保护电路

Also Published As

Publication number Publication date
DE112020002722B4 (de) 2023-03-02
JP7184183B2 (ja) 2022-12-06
CN113924661A (zh) 2022-01-11
DE112020002722T5 (de) 2022-02-17
US11785686B2 (en) 2023-10-10
US20220039232A1 (en) 2022-02-03
JPWO2020241247A1 (https=) 2020-12-03
WO2020241247A1 (ja) 2020-12-03

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