EP3863379A4 - Led constant current drive system and method - Google Patents

Led constant current drive system and method Download PDF

Info

Publication number
EP3863379A4
EP3863379A4 EP20751466.2A EP20751466A EP3863379A4 EP 3863379 A4 EP3863379 A4 EP 3863379A4 EP 20751466 A EP20751466 A EP 20751466A EP 3863379 A4 EP3863379 A4 EP 3863379A4
Authority
EP
European Patent Office
Prior art keywords
constant current
drive system
current drive
led constant
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.)
Pending
Application number
EP20751466.2A
Other languages
German (de)
French (fr)
Other versions
EP3863379A1 (en
EP3863379A9 (en
Inventor
Jun Liu
Quanqing Wu
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.)
CRM ICBG Wuxi Co Ltd
Original Assignee
CRM ICBG Wuxi 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 CRM ICBG Wuxi Co Ltd filed Critical CRM ICBG Wuxi Co Ltd
Publication of EP3863379A4 publication Critical patent/EP3863379A4/en
Publication of EP3863379A1 publication Critical patent/EP3863379A1/en
Publication of EP3863379A9 publication Critical patent/EP3863379A9/en
Pending 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]
    • H05B45/30—Driver circuits
    • H05B45/355—Power factor correction [PFC]; Reactive power compensation
    • 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
    • H05B45/347—Dynamic headroom control [DHC]
    • 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
EP20751466.2A 2019-12-23 2020-06-04 Led constant current drive system and method Pending EP3863379A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911339911.6A CN113099579B (en) 2019-12-23 2019-12-23 LED constant current driving system and method
PCT/CN2020/094377 WO2021128743A1 (en) 2019-12-23 2020-06-04 Led constant current drive system and method

Publications (3)

Publication Number Publication Date
EP3863379A4 true EP3863379A4 (en) 2021-08-11
EP3863379A1 EP3863379A1 (en) 2021-08-11
EP3863379A9 EP3863379A9 (en) 2021-11-17

Family

ID=74797682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20751466.2A Pending EP3863379A1 (en) 2019-12-23 2020-06-04 Led constant current drive system and method

Country Status (3)

Country Link
EP (1) EP3863379A1 (en)
CN (1) CN113099579B (en)
WO (1) WO2021128743A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114698186B (en) * 2020-12-30 2023-03-21 华润微集成电路(无锡)有限公司 LED driving system and closed-loop control method for LED driving
CN113727493B (en) * 2021-09-03 2023-11-28 江西汇荣实业有限公司 Intelligent microwave radar LED bulb lamp
CN113825279B (en) * 2021-11-25 2022-03-04 上海南麟电子股份有限公司 LED driving system and driving method thereof
CN114007315B (en) * 2021-12-31 2022-05-10 博为科技有限公司 Ethernet port indicator lamp control circuit and control method
CN114401569A (en) * 2022-03-14 2022-04-26 江苏源微半导体科技有限公司 Linear constant current circuit and driving method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140239810A1 (en) * 2013-02-28 2014-08-28 Asahi Kasei Microdevices Corporation Power factor correction converter with current regulated output
US20170111965A1 (en) * 2014-03-24 2017-04-20 Osram Gmbh Circuit arrangement and method for operating semiconductor light sources
CN108633126A (en) * 2017-03-22 2018-10-09 华润矽威科技（上海）有限公司 Linear high power factor constant current is without stroboscopic LED drive circuit and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104991597B (en) * 2015-06-30 2016-09-28 南京矽力杰半导体技术有限公司 Peak current control circuitry
CN107529241B (en) * 2016-06-22 2019-06-21 华润矽威科技（上海）有限公司 A kind of linear Constant-power LED drive circuit of single hop and method
CN107801268B (en) * 2016-08-31 2019-11-15 华润矽威科技（上海）有限公司 Linear high-efficiency constant current is without stroboscopic LED driving circuit and driving method thereof
CN108306492B (en) * 2017-01-13 2020-09-08 华润矽威科技（上海）有限公司 Self-adaptive output current ripple removing circuit and ripple removing method thereof
CN107911907B (en) * 2017-12-11 2020-03-06 矽力杰半导体技术(杭州)有限公司 LED drive circuit, power converter and control method
CN107995736B (en) * 2017-12-15 2020-06-09 矽力杰半导体技术(杭州)有限公司 LED drive circuit, power converter and control method
CN108966430B (en) * 2018-08-31 2020-06-30 广东工业大学 Linear driving circuit of LED lighting lamp
CN110505733A (en) * 2019-08-14 2019-11-26 深圳市晟碟半导体有限公司 LED control circuit, device and the control method of compatible silicon controlled light modulator
CN110572897B (en) * 2019-08-20 2024-03-19 深圳市晟碟半导体有限公司 High-power-factor stroboflash-free LED dimming circuit, device and dimming method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140239810A1 (en) * 2013-02-28 2014-08-28 Asahi Kasei Microdevices Corporation Power factor correction converter with current regulated output
US20170111965A1 (en) * 2014-03-24 2017-04-20 Osram Gmbh Circuit arrangement and method for operating semiconductor light sources
CN108633126A (en) * 2017-03-22 2018-10-09 华润矽威科技（上海）有限公司 Linear high power factor constant current is without stroboscopic LED drive circuit and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021128743A1 *

Also Published As

Publication number Publication date
CN113099579A (en) 2021-07-09
EP3863379A1 (en) 2021-08-11
EP3863379A9 (en) 2021-11-17
WO2021128743A1 (en) 2021-07-01
CN113099579B (en) 2022-07-05

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