EP3863379A4 - Led constant current drive system and method - Google Patents
Led constant current drive system and method Download PDFInfo
- 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
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
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)
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 |
CN114401569B (en) * | 2022-03-14 | 2024-07-12 | 江苏源微半导体科技有限公司 | Linear constant current circuit and driving method |
Citations (3)
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)
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 |
CN110505733B (en) * | 2019-08-14 | 2024-07-23 | 深圳市晟碟半导体有限公司 | LED control circuit, device and control method compatible with silicon controlled rectifier dimmer |
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 |
-
2019
- 2019-12-23 CN CN201911339911.6A patent/CN113099579B/en active Active
-
2020
- 2020-06-04 EP EP20751466.2A patent/EP3863379A1/en active Pending
- 2020-06-04 WO PCT/CN2020/094377 patent/WO2021128743A1/en unknown
Patent Citations (3)
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)
Title |
---|
See also references of WO2021128743A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP3863379A9 (en) | 2021-11-17 |
CN113099579A (en) | 2021-07-09 |
CN113099579B (en) | 2022-07-05 |
WO2021128743A1 (en) | 2021-07-01 |
EP3863379A1 (en) | 2021-08-11 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20200814 |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20210712 |
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