WO2014047668A3 - Operating circuit with clocked converter for actuating an led section - Google Patents

Operating circuit with clocked converter for actuating an led section Download PDF

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Publication number
WO2014047668A3
WO2014047668A3 PCT/AT2013/000157 AT2013000157W WO2014047668A3 WO 2014047668 A3 WO2014047668 A3 WO 2014047668A3 AT 2013000157 W AT2013000157 W AT 2013000157W WO 2014047668 A3 WO2014047668 A3 WO 2014047668A3
Authority
WO
WIPO (PCT)
Prior art keywords
switch
operating circuit
led section
led
current
Prior art date
Application number
PCT/AT2013/000157
Other languages
German (de)
French (fr)
Other versions
WO2014047668A2 (en
Inventor
Clemens KUCERA
Frank Lochmann
Original Assignee
Tridonic Gmbh & Co Kg
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
Priority claimed from ATGM385/2012U external-priority patent/AT13687U1/en
Priority claimed from DE201210217748 external-priority patent/DE102012217748A1/en
Application filed by Tridonic Gmbh & Co Kg filed Critical Tridonic Gmbh & Co Kg
Priority to EP13841314.1A priority Critical patent/EP2901816B1/en
Publication of WO2014047668A2 publication Critical patent/WO2014047668A2/en
Publication of WO2014047668A3 publication Critical patent/WO2014047668A3/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
    • 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]
    • H05B45/375—Switched mode power supply [SMPS] using buck topology

Abstract

The invention relates to an operating circuit for an LED section having at least one LED, wherein - a supply voltage (Vbus) can be fed to the operating circuit at at least one input side connection, and the operating circuit has a coil (LBuck) and a first switch (LS) clocked by a first control unit (SE), wherein - energy is buffered at the conductively connected first switch (LS) in the coil (LBuck), said energy discharging at the non-conductively connected first switch (LS) via a diode (D1) and via the LED section, wherein - the control unit (SE) is configured to determine the switch current (ILS) through the first switch (LS) at a first measuring resistance (Rshunt), preferably the supply voltage (Vbus) at a second measuring resistance (R VbusShunt) and preferably a measuring voltage (Vled) at the LED section at a third measuring resistance (RvledShunt), and to calculate therefrom the LED current (ILED) through the LED section, wherein the switch current (ILS) is combined with a PWM signal, wherein the PWM signal is low-frequency relative to the frequency of the switch current (ILS), where a second switch (FS) is provided which is configured to enable a current path between the first measuring resistance (Rshunt) and a low-pass filter (TPF) only during a switch-on period of the PWM signal, and to interrupt the signal path during a switch-off period of the PWM signal.
PCT/AT2013/000157 2012-09-28 2013-09-30 Operating circuit with clocked converter for actuating an led section WO2014047668A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13841314.1A EP2901816B1 (en) 2012-09-28 2013-09-30 Operating circuit with clocked converter for actuating an led section

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ATGM385/2012U AT13687U1 (en) 2012-09-28 2012-09-28 Operating circuit with clocked converter for controlling an LED track
ATGM385/2012 2012-09-28
DE201210217748 DE102012217748A1 (en) 2012-09-28 2012-09-28 Operating circuit of lamp for LED line, has control unit configured to control switch current detected by conductive-connected switch and to calculate LED current through LED range
DE102012217748.5 2012-09-28

Publications (2)

Publication Number Publication Date
WO2014047668A2 WO2014047668A2 (en) 2014-04-03
WO2014047668A3 true WO2014047668A3 (en) 2014-06-26

Family

ID=50389065

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2013/000157 WO2014047668A2 (en) 2012-09-28 2013-09-30 Operating circuit with clocked converter for actuating an led section

Country Status (2)

Country Link
EP (1) EP2901816B1 (en)
WO (1) WO2014047668A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015101996U1 (en) 2015-04-22 2015-05-11 Tridonic Gmbh & Co Kg Clocked converter for dimmable bulbs with dynamically adjustable filter
KR102301218B1 (en) * 2018-01-30 2021-09-10 주식회사 엘지에너지솔루션 Apparatus for diagnosing relay drive circuit
EP4345211A1 (en) 2022-09-29 2024-04-03 Apison Device for compacting materials

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006034371A1 (en) * 2006-04-21 2007-10-25 Tridonicatco Schweiz Ag Operating circuit for LEDs
US7550934B1 (en) * 2008-04-02 2009-06-23 Micrel, Inc. LED driver with fast open circuit protection, short circuit compensation, and rapid brightness control response
US20100026208A1 (en) * 2008-07-29 2010-02-04 Exclara Inc. Apparatus, System and Method for Cascaded Power Conversion
EP2451247A1 (en) * 2010-10-25 2012-05-09 Panasonic Corporation Lighting device and illumination apparatus using same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006034371A1 (en) * 2006-04-21 2007-10-25 Tridonicatco Schweiz Ag Operating circuit for LEDs
US7550934B1 (en) * 2008-04-02 2009-06-23 Micrel, Inc. LED driver with fast open circuit protection, short circuit compensation, and rapid brightness control response
US20100026208A1 (en) * 2008-07-29 2010-02-04 Exclara Inc. Apparatus, System and Method for Cascaded Power Conversion
EP2451247A1 (en) * 2010-10-25 2012-05-09 Panasonic Corporation Lighting device and illumination apparatus using same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ADRAGNA C: "DESIGN OF FIXED-OFF-TIME-CONTROLLED PFC PRE-REGULATORS WITH THE L6562am", APPLICATION NOTE, STMICROELECTRONICS, no. AN1792, 1 November 2003 (2003-11-01), pages 1 - 30, XP007921730 *

Also Published As

Publication number Publication date
EP2901816B1 (en) 2017-11-08
EP2901816A2 (en) 2015-08-05
WO2014047668A2 (en) 2014-04-03

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