EP2092802A1 - Circuit et procédé d'utilisation d'une lampe à décharge à électrodes préchauffables - Google Patents

Circuit et procédé d'utilisation d'une lampe à décharge à électrodes préchauffables

Info

Publication number
EP2092802A1
EP2092802A1 EP06807825A EP06807825A EP2092802A1 EP 2092802 A1 EP2092802 A1 EP 2092802A1 EP 06807825 A EP06807825 A EP 06807825A EP 06807825 A EP06807825 A EP 06807825A EP 2092802 A1 EP2092802 A1 EP 2092802A1
Authority
EP
European Patent Office
Prior art keywords
voltage
circuit arrangement
lamp
designed
signal
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.)
Withdrawn
Application number
EP06807825A
Other languages
German (de)
English (en)
Inventor
Bernd Rudolph
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Osram GmbH
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 Osram GmbH filed Critical Osram GmbH
Publication of EP2092802A1 publication Critical patent/EP2092802A1/fr
Withdrawn legal-status Critical Current

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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions

Definitions

  • the present invention relates to a circuit arrangement for operating a discharge lamp with preheatable electrodes with an input terminal for applying an input voltage, an output terminal for providing Stel ⁇ len an output voltage to a lamp generator for operating the discharge lamp, a resistor coupled between the input terminal and the output terminal circuit unit for power factor correction a monitoring device designed to switch off the lamp generator in the presence of at least one switch-off criterion, and an integrated circuit designed to drive the circuit unit for power factor correction, the integrated circuit having a disable input.
  • the present invention relates to the problem that an error case, a circuit arrangement for operating a discharge lamp with preheatable electrodes occurs common in AIl- directly on the lamp generator example ⁇ example during removal of the lamp in a non-ignition lamp or at EOL (end of life). After the detection of an error case, the lamp generator then remains switched off until the normal state is restored.
  • one or more electrodes of the discharge lamp serve to provide information about the proper to achieve proper connection of the discharge lamp to the circuit ⁇ arrangement. If the discharge lamp ge ⁇ exchanged, a current circuit is interrupted, which has maintained these shutdown. This opens up the possibility for a new start attempt of the discharge lamp.
  • the circuit unit provided in a generic circuit arrangement for effecting the power factor correction is frequently realized by means of a standard PFC (Power Factor Correction) IC (Integrated Circuit), for example with the L6562 from STM. Therefore, measures must be taken that these circuit unit remains until Reset factory ⁇ development of the normal state off, but then becomes operational again Vermei ⁇ -making intermittent operation of the switching unit for power factor correction, switch off the lamp generator.
  • PFC Power Factor Correction
  • IC Integrated Circuit
  • the integrated circuit measures the
  • the object of the present invention is to further develop a generic circuit arrangement or a generic method in such a way to avoid with minimal circuit complexity a intermittent forming operation of the circuit unit of the power factor correction and ensure reliable activa ⁇ tion of the circuit unit for power factor correction in desired periods, ,
  • This object is achieved by a circuit arrangement for operating a discharge lamp having the features of patent claim 1 and by a method for operating a discharge lamp having the features of patent claim 8.
  • the present invention is based on the finding that the above object can be achieved if a blocking device is provided, which is coupled to the lamp generator according to the master-slave principle, wherein the lamp generator is the master and the blocking device is the slave ,
  • the gate is Lampengenera ⁇ istschal ⁇ tet as a result of occurrence of a fault, this automatically causes the Sperrvor ⁇ direction generates a disabling signal, the locking signal is coupled to the disable input of the integrated circuit.
  • the integrated circuit is ist ⁇ on, a control of the switching unit for power factor correction, which is below remains an intermittent operation.
  • the output of a blocking signal is stopped by the locking device, whereby the power factor correction circuit unit resumes its work.
  • the inventive measure is therefore ensured in the simplest way that the Siemensungsein ⁇ unit for power factor correction in operation, as long as the lamp generator is in operation, and is switched off as soon as the lamp generator is turned off.
  • a preferred embodiment of a circuit arrangement according to the invention is characterized in that the blocking device is designed to generate an enable signal at its output when the lamp generator is switched on. This ensures that the integrated scarf ⁇ tion is blocked and thus no activation of the scarf ⁇ processing unit performs power factor correction, as long as the lamp generator is turned off. , An enable signal, the circuit unit to effect Leis ⁇ factor correction is reversed as long as the lamp generator is switched on, produces, ie the integrated circuit causes to drive accordingly.
  • the blocking device comprises an electronic switch having a control electrode, the control electrode being connected to a deactivation signal which is designed to deactivate the blocking device in the on state of the lamp generator, and an activation signal , which is designed to acti ⁇ allocateen the blocking device in the off state of the lamp generator.
  • the Aktiv istssig ⁇ nal is correlated with a voltage of the circuit arrangement which is sufficient to turn on the electronic switch without pre- handensein the disable signal, said disable signal is correlated with a voltage is that only in the on state of the Lampengenera ⁇ sector has an amplitude which is sufficient to lock the electronic ⁇ nischen switch despite the presence of the activation ⁇ signal.
  • This measure avoids complex gate logic, since the activation and deactivation signals can both be applied to the control electrode of the electronic switch, whereby the deactivation signal, if present, intersperses with the activation signal.
  • the lamp generator has a trapezoidal capacitor, wherein the electronic switch is a bipolar transistor, wherein the activation signal is correlated with the input voltage, and wherein the deactivation signal with the voltage across the trapezoidal capacitor, in particular with the voltage rise speed du / dt, is correlated.
  • the electronic switch of the blocking device is designed as a transistor, whose reference electrode is connected to ground, wherein the Deacti ⁇ demoungssignal represents a first voltage and the activation signal is a second voltage, wherein the second voltage is designed, the transistor without the presence of the first Voltage to turn on, and wherein the first voltage is designed to disable the transistor despite the presence of the second voltage.
  • the first and the second voltage are respectively coupled to the control electrode of the transistor via an ohmic resistor.
  • Fig. 1 shows a schematic representation of an embodiment of an inventive Heidelbergungsanord ⁇ tion.
  • an input voltage U E in this case the mains voltage to.
  • a fuse Si and a unit 10 which comprises a capacitor Cl and two coils FIl and F12 coupled to one another, and which serves for radio interference suppression.
  • a rectifier 12 which includes the diodes Dl, D2, D3 and D4.
  • the rectified voltage clamping ⁇ is provided to a capacitor C2, a boost converter 14, a step-up converter inductor Ll, a boost converter diode D5 and a boost converter Tl.
  • the output voltage U A of the boost converter 14 is provided to the lamp generator LG on a capacitor C3, in particular as a so-called intermediate circuit voltage.
  • the term of the lamp generator LG is the combination of inverters, designed in particular as half or full bridge circuit, and load circuit to understand.
  • the lamp La is coupled and coupled via a coupling capacitor C ⁇ to the reference potential.
  • an integrated circuit 16 is used in addition to the boost converter 14, which controls the switch Tl of the boost converter 14 for effecting a power factor correction via its pin 7 and the ohmic resistance Rl.
  • the integrated circuit 16 may, for example, be a module L6562 from STM.
  • Pin 6 of the integrated circuit 16 is connected to a reference potential, in the present case ground.
  • the voltage supply of the integrated circuit 16 takes place via the pin 8, wherein the starting power supply via the ohmic resistance R2 takes place, while the continuous operating voltage supply with participation of the components C4, R3, D6, Z1, C5 and C6 takes place ⁇ as an inductance L2, which forms a transformer together with the inductance Ll.
  • the output ⁇ voltage U A is measured with the participation of the components R4, R5 and C7 via the pins 1 and 2 of the integrated circuit 16, wherein the connection of the pins 1 and 2, an integrator is formed.
  • the measurement of the input voltage U E takes place at pin 3 with the participation of the components R6, R7 and C8.
  • the voltage Waste at ohmic resistance R8 the current monitored by the switch Tl.
  • Pin 5 of the integrated circuit 16 has a double function: the detection of the demagnetization of the storage inductor L1 via the auxiliary winding L2 the so-called disable input. In the normal state, d. h outside of a fault, is at pin 5 via a resistor R9 to a voltage potential, which corresponds to an enable signal.
  • the blocking device 18 comprises a switch T2, two ohmic resistors RIO, RIl, a diode D7 and terminals Sl, S2, to which a negative auxiliary voltage U H is applied.
  • the transistor T2 is disabled, so that at pin 5 of the integrated circuit 16 via the resistor R9 a signal is applied, as mentioned , leads to the desired activation of the switch Tl of the boost converter 14 in order to effect a power factor correction.
  • the lamp generator LG in case of failure, ie at fixed Ellen least ei ⁇ nes switch-off criterion is deactivated by a monitoring device 20 is omitted, the signal U H for Deakti ⁇ vation of the locking device 18.
  • the lamp generator LG is again set into operation.
  • the auxiliary voltage U H is generated, which leads to a blocking of the scarf ⁇ ters T2.
  • the integrated circuit 16 resumes its operation and controls the switch Tl via pin 7 to effect the power factor correction.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention concerne un circuit d'utilisation d'une lampe à décharge (LA) dotée d'électrodes préchauffables ainsi que d'une borne d'entrée qui permet d'appliquer une tension d'entrée, une borne de sortie qui permet d'appliquer une tension de sortie (UA) sur un générateur (LG) de la lampe qui alimente la lampe à décharge (LA), une unité de circuit (14) raccordée entre la borne d'entrée et la borne de sortie et qui corrige le facteur de puissance, un dispositif de surveillance (20) conçu pour débrancher le générateur (LG) de la lampe lorsqu'au moins un critère de débranchement est satisfait et un circuit intégré (16) conçu pour commander l'unité de commutation (14) pour corriger le facteur de puissance. Le circuit intégré (16) présente une entrée de désactivation et le circuit comprend en outre un dispositif de blocage (18) conçu pour former sur sa sortie un signal de blocage lorsque le générateur (LG) de la lampe est débranché. La sortie du dispositif de blocage (18) est raccordée à l'entrée de désactivation du circuit intégré (16). L'invention concerne en outre un procédé d'utilisation d'une lampe à décharge (LA) à électrodes préchauffables sur un tel circuit.
EP06807825A 2006-11-22 2006-11-22 Circuit et procédé d'utilisation d'une lampe à décharge à électrodes préchauffables Withdrawn EP2092802A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/068749 WO2008061559A1 (fr) 2006-11-22 2006-11-22 Circuit et procédé d'utilisation d'une lampe à décharge à électrodes préchauffables

Publications (1)

Publication Number Publication Date
EP2092802A1 true EP2092802A1 (fr) 2009-08-26

Family

ID=38265125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06807825A Withdrawn EP2092802A1 (fr) 2006-11-22 2006-11-22 Circuit et procédé d'utilisation d'une lampe à décharge à électrodes préchauffables

Country Status (5)

Country Link
US (1) US8120270B2 (fr)
EP (1) EP2092802A1 (fr)
KR (1) KR20090093988A (fr)
CN (1) CN101523995A (fr)
WO (1) WO2008061559A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8207683B2 (en) * 2008-01-18 2012-06-26 Osram Ag Buck converter for making power available to at least one LED
CN102869145A (zh) * 2011-07-09 2013-01-09 深圳市万禧节能科技有限公司 一种led驱动电源

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5925990A (en) 1997-12-19 1999-07-20 Energy Savings, Inc. Microprocessor controlled electronic ballast
US6051940A (en) * 1998-04-30 2000-04-18 Magnetek, Inc. Safety control circuit for detecting the removal of lamps from a ballast and reducing the through-lamp leakage currents
US7015652B2 (en) 2003-10-17 2006-03-21 Universal Lighting Technologies, Inc. Electronic ballast having end of lamp life, overheating, and shut down protections, and reignition and multiple striking capabilities
US8164272B2 (en) * 2005-03-15 2012-04-24 International Rectifier Corporation 8-pin PFC and ballast control IC

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008061559A1 *

Also Published As

Publication number Publication date
CN101523995A (zh) 2009-09-02
US8120270B2 (en) 2012-02-21
US20100052541A1 (en) 2010-03-04
KR20090093988A (ko) 2009-09-02
WO2008061559A1 (fr) 2008-05-29

Similar Documents

Publication Publication Date Title
DE4331378C2 (de) Schaltungsanordnung zum Betrieb einer Hochdruck-Entladungslampe für einen Fahrzeugscheinwerfer
DE4002334C2 (de) Schaltung zum Betreiben einer elektrischen Entladelampe in einem Kraftfahrzeug
DE4322139B4 (de) Schaltungsanordnung zum Betrieb einer Hochdruckentladungslampe für einen Fahrzeugscheinwerfer
DE19533103B4 (de) Schaltungsanordnung zum Betrieb einer Entladungslampe
DE102008064659A1 (de) Schaltungsanordnung und Ansteuerschaltung für ein Netzteil, Computernetzteil und Verfahren zum Schalten eines Netzteils
EP0801881A1 (fr) Procede permettant de faire fonctionner au moins une lampe a fluorescence au moyen d'un ballast electronique et ballast electronique utilise a cet effet
DE112017000303T5 (de) Invertervorrichtung und Verfahren zum Erfassen einer Anomalie bei einer Invertervorrichtung
DE10303246B3 (de) Ansteuerschaltung für einen Schalter in einem Schaltwandler und Verfahren zur Ansteuerung eines Schalters in einem Schaltwandler
DE4329919A1 (de) Verfahren zum Betreiben eines Verbrauchers in einem Fahrzeug
DE102021122687A1 (de) Anordnung und Verfahren zur Entladung eines Zwischenkreiskondensators
DE19622803B4 (de) Schaltungsanordnung für Hochdruck-Entladungslampe
EP1125351B1 (fr) Circuit de protection destine a un montage en serie compose d'etages de sortie a semi-conducteurs de puissance et d'un consommateur inductif
DE10012860B4 (de) Steuersystem für einen Wechselstromgenerator
EP1721381B1 (fr) Detection de surintensite de courant et de tension en un point central
DE19801133A1 (de) Versorgungsschaltung mit Schutzschaltung für eine Entladungslampe
WO2005055387A1 (fr) Ensemble circuit et procede de commande d'un consommateur inductif
WO2008061559A1 (fr) Circuit et procédé d'utilisation d'une lampe à décharge à électrodes préchauffables
WO2011101356A1 (fr) Protection contre les surtensions destinée à un commutateur à semi-conducteur
EP1726085B1 (fr) Procede de fonctionnement d'une unite d'alimentation d'un circuit d'excitation et unite d'alimentation d'un circuit d'excitation
DE102011121197B4 (de) Verfahren zur Inbetriebnahme eines Wechselrichters und Wechselrichter
EP2133996B1 (fr) Commutateur destiné à la commande d'un récepteur électrique
EP2131497A1 (fr) Commutateur de semi-conducteur doté d'une commutation de court-circuit
EP1128536B1 (fr) Dispositif pour la mise en marche et l'arrêt d'un circuit de commande
DE102008008666B4 (de) Schaltungsanordnung
DE112016005127T5 (de) Overboost-Unterdrückungsschaltung für Hochsetzsteller

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090325

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20091130

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OSRAM GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20130601