WO2012137130A3 - Method for driving leds - Google Patents

Method for driving leds Download PDF

Info

Publication number
WO2012137130A3
WO2012137130A3 PCT/IB2012/051623 IB2012051623W WO2012137130A3 WO 2012137130 A3 WO2012137130 A3 WO 2012137130A3 IB 2012051623 W IB2012051623 W IB 2012051623W WO 2012137130 A3 WO2012137130 A3 WO 2012137130A3
Authority
WO
WIPO (PCT)
Prior art keywords
led
leds
generating
applications
peak intensities
Prior art date
Application number
PCT/IB2012/051623
Other languages
French (fr)
Other versions
WO2012137130A2 (en
Inventor
Christian Krause
Original Assignee
Sgm A/S
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 Sgm A/S filed Critical Sgm A/S
Priority to EP12715729.5A priority Critical patent/EP2695486A2/en
Publication of WO2012137130A2 publication Critical patent/WO2012137130A2/en
Publication of WO2012137130A3 publication Critical patent/WO2012137130A3/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]
    • H05B45/30—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]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits

Landscapes

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

Abstract

The present invention relates to a method for driving at least one LED which is performed in the following steps: by generating a pulsating current through the LED, controlling the voltage drop over at least the LED and generating pulses with at least one sloping flange. It is the object of the present invention to perform overdrive of LEDs for increasing high-peak intensities in pulsating light. The object can be achieved by generating the pulses with a sloping rising flange. Hereby it can be achieved that when LEDs are driven with sloped current increases very high-peak intensities can be achieved making a LED suitable for strobe and flash applications by which this driver technology opens a whole new world of applications where LEDs can be implemented. It is possible to increase the peak intensities in all applications where flashing can be accepted.
PCT/IB2012/051623 2011-04-04 2012-04-03 Method for driving leds WO2012137130A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12715729.5A EP2695486A2 (en) 2011-04-04 2012-04-03 Method for driving leds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201170158 2011-04-04
DKPA201170158 2011-04-04

Publications (2)

Publication Number Publication Date
WO2012137130A2 WO2012137130A2 (en) 2012-10-11
WO2012137130A3 true WO2012137130A3 (en) 2013-01-24

Family

ID=45992572

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/051623 WO2012137130A2 (en) 2011-04-04 2012-04-03 Method for driving leds

Country Status (2)

Country Link
EP (1) EP2695486A2 (en)
WO (1) WO2012137130A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007144365A1 (en) * 2006-06-15 2007-12-21 Osram Gesellschaft mit beschränkter Haftung Electrical power supply circuit device for at least one electrical and/or electronic component
US20080224625A1 (en) * 2006-12-15 2008-09-18 Intersil Americas Inc. Constant current light emitting diode (LED) driver circuit and method
WO2008152565A2 (en) * 2007-06-13 2008-12-18 Philips Intellectual Property & Standards Gmbh Supply circuit, in particular for leds
DE102007031038A1 (en) * 2007-07-04 2009-01-08 Tridonicatco Schweiz Ag Circuit for operating light-emitting diodes (LEDs)
WO2010023280A1 (en) * 2008-08-28 2010-03-04 Lemnis Lighting Patent Holding B.V. Method and circuit for controlling an led load
US20100079124A1 (en) * 2008-09-30 2010-04-01 John Laurence Melanson Adjustable Constant Current Source with Continuous Conduction Mode ("CCM") and Discontinuous Conduction Mode ("DCM") Operation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2015611A1 (en) 2007-07-12 2009-01-14 Yu-Nung Shen Method for driving a LED
DE202008004910U1 (en) 2008-04-09 2008-06-12 Maiw, Fu-Hwa, Hsin-Tine City A high performance power driver for the serial connection of LED light emitting diodes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007144365A1 (en) * 2006-06-15 2007-12-21 Osram Gesellschaft mit beschränkter Haftung Electrical power supply circuit device for at least one electrical and/or electronic component
US20080224625A1 (en) * 2006-12-15 2008-09-18 Intersil Americas Inc. Constant current light emitting diode (LED) driver circuit and method
WO2008152565A2 (en) * 2007-06-13 2008-12-18 Philips Intellectual Property & Standards Gmbh Supply circuit, in particular for leds
DE102007031038A1 (en) * 2007-07-04 2009-01-08 Tridonicatco Schweiz Ag Circuit for operating light-emitting diodes (LEDs)
WO2010023280A1 (en) * 2008-08-28 2010-03-04 Lemnis Lighting Patent Holding B.V. Method and circuit for controlling an led load
US20100079124A1 (en) * 2008-09-30 2010-04-01 John Laurence Melanson Adjustable Constant Current Source with Continuous Conduction Mode ("CCM") and Discontinuous Conduction Mode ("DCM") Operation

Also Published As

Publication number Publication date
WO2012137130A2 (en) 2012-10-11
EP2695486A2 (en) 2014-02-12

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