KR20080098396A - Led 드라이버 회로 - Google Patents
Led 드라이버 회로 Download PDFInfo
- Publication number
- KR20080098396A KR20080098396A KR1020087021117A KR20087021117A KR20080098396A KR 20080098396 A KR20080098396 A KR 20080098396A KR 1020087021117 A KR1020087021117 A KR 1020087021117A KR 20087021117 A KR20087021117 A KR 20087021117A KR 20080098396 A KR20080098396 A KR 20080098396A
- Authority
- KR
- South Korea
- Prior art keywords
- led
- comparator
- led driver
- driver circuit
- voltage
- 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.)
- Granted
Links
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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
- H05B45/37—Converter 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]
- H05B45/375—Switched mode power supply [SMPS] using buck topology
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- 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]
- H05B45/385—Switched mode power supply [SMPS] using flyback topology
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
- Dc-Dc Converters (AREA)
- Electronic Switches (AREA)
Abstract
Description
Claims (6)
- LED 드라이버 회로(1)로서,공급 전압 입력 단자(3)와,제어 입력 단자(5)와,상기 LED 드라이버 회로를 적어도 하나의 LED에 연결하기 위한 제1 출력 단자(7) 및 제2 출력 단자(9)를 포함하고,다운 컨버팅 특징부(11)를 갖는 스위칭 모드 전원(switched-mode power supply; smps)은 상기 공급 전압 입력 단자(3)와 상기 제1 출력 단자(7) 간에 연결되어 있으며, 상기 컨버터(11)는 LED 전류를 조절하기 위해 히스테리시스 구성 비교기 회로(hysteresis configured comparator circuit; 13)에 의해 제어되며, 상기 비교기의 스위칭 레벨은 기준 단자(15)에서 수신되는 기준 전압(+Vref)에 의해 설정되는 LED 드라이버 회로.
- 제1항에 있어서,상기 제어 입력 단자(5)는, 상기 비교기 회로(13)의 출력을 활성화 또는 비활성화하는 스위치(17)에 연결되어 있는 LED 드라이버 회로.
- 제1항에 있어서,상기 제어 입력 단자(5)는, 상기 비교기 회로(13) 내의 분압기 네트워크에 영향을 끼치는 스위치(19)에 연결되어 있는 LED 드라이버 회로.
- 제1항 내지 제3항 중 어느 한 항에 있어서,션트 저항기(Rs)는 상기 비교기 회로(13)에 공급되는 대응 전압을 정하기 위해 LED 전류(ILED)를 수신하는 LED 드라이버 회로.
- 제4항에 있어서,상기 전압은 로우-패스 필터(23)를 통해 상기 비교기 회로에 공급되는 LED 드라이버 회로.
- 제1항 내지 제5항 중 어느 한 항에 있어서,상기 컨버터(11)는 (스텝) 다운 컨버터 또는 버크(buck) 컨버터인 LED 드라이버 회로.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06101079.9 | 2006-01-31 | ||
| EP06101079 | 2006-01-31 | ||
| PCT/IB2007/050279 WO2007088505A1 (en) | 2006-01-31 | 2007-01-26 | Led driver circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20080098396A true KR20080098396A (ko) | 2008-11-07 |
| KR101303362B1 KR101303362B1 (ko) | 2013-09-03 |
Family
ID=37905021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020087021117A Active KR101303362B1 (ko) | 2006-01-31 | 2007-01-26 | Led 드라이버 회로 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8217587B2 (ko) |
| EP (1) | EP1982560A1 (ko) |
| JP (1) | JP5329235B2 (ko) |
| KR (1) | KR101303362B1 (ko) |
| CN (1) | CN101379879B (ko) |
| TW (1) | TWI434609B (ko) |
| WO (1) | WO2007088505A1 (ko) |
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| WO2008050779A1 (fr) * | 2006-10-18 | 2008-05-02 | Koa Corporation | Circuit de commande de del |
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| US8319449B2 (en) * | 2006-12-06 | 2012-11-27 | Nxp B.V. | Controlled voltage source for LED drivers |
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| DE102012111317B4 (de) | 2012-11-23 | 2021-07-22 | HELLA GmbH & Co. KGaA | Schaltungsanordnung mit einem Abwärtswandler |
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2007
- 2007-01-26 WO PCT/IB2007/050279 patent/WO2007088505A1/en not_active Ceased
- 2007-01-26 JP JP2008551939A patent/JP5329235B2/ja active Active
- 2007-01-26 EP EP07705719A patent/EP1982560A1/en not_active Ceased
- 2007-01-26 US US12/162,372 patent/US8217587B2/en active Active
- 2007-01-26 KR KR1020087021117A patent/KR101303362B1/ko active Active
- 2007-01-26 CN CN2007800041739A patent/CN101379879B/zh active Active
- 2007-01-29 TW TW096103240A patent/TWI434609B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| EP1982560A1 (en) | 2008-10-22 |
| TW200803618A (en) | 2008-01-01 |
| US20090021182A1 (en) | 2009-01-22 |
| KR101303362B1 (ko) | 2013-09-03 |
| TWI434609B (zh) | 2014-04-11 |
| CN101379879B (zh) | 2011-08-17 |
| WO2007088505A1 (en) | 2007-08-09 |
| JP2009525595A (ja) | 2009-07-09 |
| JP5329235B2 (ja) | 2013-10-30 |
| CN101379879A (zh) | 2009-03-04 |
| US8217587B2 (en) | 2012-07-10 |
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