EP3863379A9 - Système et procédé d'entraînement à courant constant de del - Google Patents

Système et procédé d'entraînement à courant constant de del Download PDF

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Publication number
EP3863379A9
EP3863379A9 EP20751466.2A EP20751466A EP3863379A9 EP 3863379 A9 EP3863379 A9 EP 3863379A9 EP 20751466 A EP20751466 A EP 20751466A EP 3863379 A9 EP3863379 A9 EP 3863379A9
Authority
EP
European Patent Office
Prior art keywords
voltage
led
constant current
storage capacitor
led load
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
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German (de)
English (en)
Other versions
EP3863379A4 (fr
EP3863379A1 (fr
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/fr
Publication of EP3863379A1 publication Critical patent/EP3863379A1/fr
Publication of EP3863379A9 publication Critical patent/EP3863379A9/fr
Pending legal-status Critical Current

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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
    • H05B45/355—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

Definitions

  • this Embodiment provides an LED constant current drive system 2, which includes: an LED load, a constant current control module 21, a storage capacitor Co, a discharge voltage detection module 22, a bus voltage detection module 23 and a charge current control module 24.
  • the bus voltage Vin is provided by the rectification module 25, and the rectification module 25 rectifies the alternating current power supply AC to obtain the bus voltage Vin.
  • the rectification module 25 includes a rectifier bridge structure BD1 and a fuse F1.
  • the rectifier bridge structure BD1 includes two sets of diodes connected in parallel. Each diode set includes two diodes connected in series.
  • the alternating current power supply AC is connected between the two diodes of each diode set after passing through the fuse F1.
  • the bus voltage Vin is a rectified voltage after sinusoidal voltage rectification.
  • the upper plate of the storage capacitor Co is connected to the positive electrode of the LED load.
  • the storage capacitor Co discharges to the LED load.
  • the bus voltage detection module 23 is connected with the bus voltage Vin, and detects the bus voltage Vin to obtain a first detection voltage V LN .
  • the compensation unit 242 further includes a third comparator CMP3 and a third current source I3.
  • the non-inverting input terminal of the third comparator CMP3 is connected with the gate of the first power switch transistor Q1, and the inverting input terminal of the third comparator CMP3 is connected with the third preset voltage Ref3, to output a third control signal.
  • the gate voltage of the first power switch transistor Q1 is greater than the third preset voltage Ref3, a high level is output, and the third control signal is valid.
  • the bus voltage Vin starts to decrease after reaching a peak value.
  • the storage capacitor Co begins to discharge to the LED load until a power frequency cycle terminals at time t3.
  • the shadow area of the charge current A of the storage capacitor Co is equal to the shadow area of the discharge current B of the storage capacitor Co in the figure, C is the shadow area of the current provided by the bus voltage to the LED.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP20751466.2A 2019-12-23 2020-06-04 Système et procédé d'entraînement à courant constant de del Pending EP3863379A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911339911.6A CN113099579B (zh) 2019-12-23 2019-12-23 Led恒流驱动系统及方法
PCT/CN2020/094377 WO2021128743A1 (fr) 2019-12-23 2020-06-04 Système et procédé d'entraînement à courant constant de del

Publications (3)

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

Family

ID=74797682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20751466.2A Pending EP3863379A1 (fr) 2019-12-23 2020-06-04 Système et procédé d'entraînement à courant constant de del

Country Status (3)

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

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114698186B (zh) * 2020-12-30 2023-03-21 华润微集成电路(无锡)有限公司 一种led驱动系统及led驱动的闭环控制方法
CN113727493B (zh) * 2021-09-03 2023-11-28 江西汇荣实业有限公司 一种智能微波雷达led球泡灯
CN113825279B (zh) * 2021-11-25 2022-03-04 上海南麟电子股份有限公司 Led驱动系统及其驱动方法
CN116321574B (zh) * 2021-12-08 2025-12-05 华润微集成电路(无锡)有限公司 恒流控制电路、恒流驱动系统及过功率保护方法
CN116321575A (zh) * 2021-12-08 2023-06-23 华润微集成电路(无锡)有限公司 控制电路、led驱动系统及过功率保护方法
CN116406052B (zh) * 2021-12-28 2025-09-12 华润微集成电路(无锡)有限公司 Led驱动重启保护系统及方法
CN114007315B (zh) * 2021-12-31 2022-05-10 博为科技有限公司 一种以太网口指示灯控制电路及控制方法
CN114401569B (zh) * 2022-03-14 2024-07-12 江苏源微半导体科技有限公司 线性恒流电路和驱动方法
CN116847500A (zh) * 2022-03-25 2023-10-03 华润微集成电路(无锡)有限公司 Led恒流驱动系统
CN114828326B (zh) * 2022-04-19 2024-11-05 江苏源微半导体科技有限公司 线性驱动电路
WO2025001950A1 (fr) * 2023-06-29 2025-01-02 苏州欧普照明有限公司 Circuit d'attaque à courant constant, système de commande de courant constant et lampe
EP4739000A1 (fr) * 2023-06-30 2026-05-06 Suzhou Opple Lighting Co., Ltd. Circuit d'attaque, dispositif de commande d'attaque et lampe
CN119485850B (zh) * 2024-12-30 2025-10-31 江苏源微半导体科技有限公司 高功率因数且无频闪的led线性恒流驱动芯片和电路

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8884548B2 (en) * 2013-02-28 2014-11-11 Asahi Kasei Microdevices Corporation Power factor correction converter with current regulated output
US10159123B2 (en) * 2014-03-24 2018-12-18 Osram Gmbh Circuit arrangement and method for operating semiconductor light sources
CN104991597B (zh) * 2015-06-30 2016-09-28 南京矽力杰半导体技术有限公司 峰值电流控制电路
CN107529241B (zh) * 2016-06-22 2019-06-21 华润矽威科技（上海）有限公司 一种单段线性恒功率led驱动电路及方法
CN107801268B (zh) * 2016-08-31 2019-11-15 华润矽威科技（上海）有限公司 线性高效恒流无频闪led驱动电路及其驱动方法
CN108306492B (zh) * 2017-01-13 2020-09-08 华润矽威科技（上海）有限公司 一种自适应输出电流去纹波电路及其去纹波方法
CN108633126B (zh) * 2017-03-22 2020-06-19 华润矽威科技（上海）有限公司 线性高功率因素恒流无频闪led驱动电路及方法
CN107911907B (zh) * 2017-12-11 2020-03-06 矽力杰半导体技术(杭州)有限公司 Led驱动电路、功率变换器和控制方法
CN107995736B (zh) * 2017-12-15 2020-06-09 矽力杰半导体技术(杭州)有限公司 Led驱动电路、功率变换器和控制方法
CN108966430B (zh) * 2018-08-31 2020-06-30 广东工业大学 一种led照明灯具线性驱动电路
CN110505733B (zh) * 2019-08-14 2024-07-23 深圳市晟碟半导体有限公司 兼容可控硅调光器的led控制电路、装置和控制方法
CN110572897B (zh) * 2019-08-20 2024-03-19 深圳市晟碟半导体有限公司 高功率因数无频闪的led调光电路、装置及调光方法

Also Published As

Publication number Publication date
EP3863379A4 (fr) 2021-08-11
WO2021128743A1 (fr) 2021-07-01
CN113099579A (zh) 2021-07-09
EP3863379A1 (fr) 2021-08-11
CN113099579B (zh) 2022-07-05

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