WO2011030246A3 - Driving circuit having resonant converter and shunting switches, for driving a plurality of light sources - Google Patents

Driving circuit having resonant converter and shunting switches, for driving a plurality of light sources Download PDF

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Publication number
WO2011030246A3
WO2011030246A3 PCT/IB2010/053683 IB2010053683W WO2011030246A3 WO 2011030246 A3 WO2011030246 A3 WO 2011030246A3 IB 2010053683 W IB2010053683 W IB 2010053683W WO 2011030246 A3 WO2011030246 A3 WO 2011030246A3
Authority
WO
WIPO (PCT)
Prior art keywords
light sources
driving
driving circuit
resonant converter
series
Prior art date
Application number
PCT/IB2010/053683
Other languages
French (fr)
Other versions
WO2011030246A2 (en
Inventor
Martijn Henri Richard Lankhorst
Dennis Johannes Antonius Claessens
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2011030246A2 publication Critical patent/WO2011030246A2/en
Publication of WO2011030246A3 publication Critical patent/WO2011030246A3/en

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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
    • 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]
    • 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]
    • H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention relates to a driving circuit (1) for driving a plurality of light sources (3,4) arranged in a series configuration, the circuit (1) comprising: at least two controllable switches (6,7,8), each switch configured to shunt one or more corresponding light sources (3,4,5); - a controller (9) for individually controlling operative states of the switches (6,7,8) in order to control a light output of the corresponding light sources (3,4,5); a secondary source (11) having input terminals (13,14) for connecting to a primary source and output terminals (18,19) for connecting to the series arrangement of light sources (3,4,5), wherein the secondary source (11) has the characteristics of a voltage source; - an electrical element (21,22,7,33,40) to provide an impedance between the secondary source (11) and the series arrangement of light sources (3,4,5) in series with the series arrangement of light sources (3,4,5).
PCT/IB2010/053683 2009-09-09 2010-08-16 Driving circuit for driving a plurality of light sources WO2011030246A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09169832.4 2009-09-09
EP09169832 2009-09-09

Publications (2)

Publication Number Publication Date
WO2011030246A2 WO2011030246A2 (en) 2011-03-17
WO2011030246A3 true WO2011030246A3 (en) 2011-05-19

Family

ID=43568190

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/053683 WO2011030246A2 (en) 2009-09-09 2010-08-16 Driving circuit for driving a plurality of light sources

Country Status (1)

Country Link
WO (1) WO2011030246A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105432149A (en) * 2013-05-23 2016-03-23 J&C技术有限公司 Apparatus for driving light emitting diode

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008110978A1 (en) * 2007-03-13 2008-09-18 Philips Intellectual Property & Standards Gmbh Supply circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008110978A1 (en) * 2007-03-13 2008-09-18 Philips Intellectual Property & Standards Gmbh Supply circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ROBERT W. ERICKSON, DRAGAN MAKSIMOVIC: "Fundamentals of power electronics", 31 December 2001, KLUWER ACADEMIC PUBLISHERS, United States of America, ISBN: 0-7923-7270-0, pages: 705 - 755, XP002625293 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105432149A (en) * 2013-05-23 2016-03-23 J&C技术有限公司 Apparatus for driving light emitting diode
CN105432149B (en) * 2013-05-23 2018-03-20 J&C技术有限公司 Light emitting diode drive device

Also Published As

Publication number Publication date
WO2011030246A2 (en) 2011-03-17

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