EP1594349B1 - Electronic ballast for a lamp - Google Patents
Electronic ballast for a lamp Download PDFInfo
- Publication number
- EP1594349B1 EP1594349B1 EP05008806A EP05008806A EP1594349B1 EP 1594349 B1 EP1594349 B1 EP 1594349B1 EP 05008806 A EP05008806 A EP 05008806A EP 05008806 A EP05008806 A EP 05008806A EP 1594349 B1 EP1594349 B1 EP 1594349B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- commutation
- electronic ballast
- damping element
- capacitor
- 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.)
- Not-in-force
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 40
- 238000013016 damping Methods 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 claims 1
- 150000002505 iron Chemical class 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 241000512624 Morelia <snake> Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
Images
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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein elektronisches Vorschaltgerät für eine Lampe mit einem Eingangskreis mit einem Anschluss an eine Spannungsversorgung, einem Ausgangskreis mit einem Anschluss für die Lampe und einer zwischen dem Eingangs- und dem Ausgangskreis angeordneten Spannungskonvertervorrichtung, wobei die Spannungskonvertervorrichtung einen Eingangskondensator und einen Ausgangskondensator umfasst, zwischen denen eine Schaltvorrichtung und eine Freilaufdiode, sowie mindestens ein Dämpfungselement, mindestens ein Trapezkondensator und eine Induktivität angeordnet sind, wobei die Spannungskonvertervorrichtung ausgelegt ist, eine Kommutierung auszuführen, wobei bezogen auf einen Kommutierungsvorgang vor der Kommutierung ein erster, von einem Hauptstrom durchflossener Hauptstromkreis und nach der Kommutierung ein zweiter, von dem Hauptstrom durchflossener Hauptstromkreis definiert ist, sowie mindestens ein von dem Hauptstrom nicht durchflossener Nebenstromkreis, wobei der mindestens eine Nebenstromkreis das mindestens eine Dämpfungselement und den mindestens einen Trapezkondensator umfasst.The present invention relates to an electronic ballast for a lamp having an input circuit with a connection to a power supply, an output circuit having a connection for the lamp and a voltage converter device arranged between the input and the output circuit, the voltage converter device comprising an input capacitor and an output capacitor, between which a switching device and a freewheeling diode, and at least one damping element, at least one trapezoidal capacitor and an inductance are arranged, wherein the voltage converter device is designed to perform a commutation, based on a commutation before the commutation of a first, a main flow through a main circuit and after the commutation is defined as a second main circuit through which the main current flows, and at least one bypass circuit not through the main current, wherein de R at least one secondary circuit which comprises at least one damping element and the at least one trapezoidal capacitor.
Ein derartiges elektronisches Vorschaltgerät ist bekannt aus MUNOZ B C A, "Study of a new passive lossless turn-off snubber", POWER ELECTRONICS CONGRESS, 1998, CIEP 98, VI IEEE INTERNATIONAL MORELIA; MEXICO 12-15 OCT. 1998, PISCATAWAY, NJ, USA, IEEE, US, 12. Oktober 1998 (1998-10-12), Seiten 147-152, XP010324613 ISBN: 0-7803-5006-5. Dieser bekannte Snubber zeigt einen Nebenstromkreis, der drei Dioden, zwei Kondensatoren und eine Induktivität umfasst. Das Ziel dieser Snubberschaltung besteht darin, unter Verwendung von lediglich passiven Bauteilen einen Snubber bereitzustellen, der insbesondere beim Ausschalten dadurch möglichst geringe Verluste aufweist, dass die entsprechende Energie an den Lastkreis geleitet wird.Such an electronic ballast is known from MUNOZ B C A, "Study of a new passive lossless turn-off snubber", POWER ELECTRONICS CONGRESS, 1998, CIEP 98, VI IEEE INTERNATIONAL MORELIA; MEXICO 12-15 OCT 1998, PISCATAWAY, NJ, USA, IEEE, US, 12 October 1998 (1998-10-12), pages 147-152, XP010324613 ISBN: 0-7803-5006-5. This known snubber shows a branch circuit comprising three diodes, two capacitors and one inductance. The goal of this snubber circuit is to provide a snubber using only passive components which, in particular, has the least possible losses when switched off, so that the corresponding energy is conducted to the load circuit.
Eine weitere aus dem Stand der Technik bekannte Vorrichtung ist in Fig. 1 schematisch dargestellt, wobei der Eingangskreis die Bezugszahl 10, die Spannungskonvertervorrichtung die Bezugszahl 12 und der Ausgangskreis die Bezugszahl 14 trägt. Die Lampe ist mit dem Bezugszeichen 16 gekennzeichnet. Eine detailliertere Darstellung der im Stand der Technik als Spannungskonvertervorrichtung 12 verwendeten Schaltungsanordnung kann Figur 2 entnommen werden. Diese weist eingangsseitig einen Eingangskondensator C1 und ausgangsseitig einen Ausgangskondensator C2 auf. Die vorliegend beispielhaft gezeigte Schaltung ist als Tiefsetzsteller ausgebildet und weist eine Schaltvorrichtung T1, vorliegend einen Transistor, eine Freilaufdiode D1, einen Trapezkondensator C3 sowie eine Induktivität L1 auf. Während die Schaltvorrichtung T1 und die Induktivität L1 im Längszweig angeordnet sind, sind die Freilaufdiode D1 und der Trapezkondensator C3 jeweils in einem Querzweig angeordnet. Ein Trapezkondensator dient der Einstellung der Schaltgeschwindigkeit der Schaltvorrichtung. Die Induktivität L1 ist in üblicher Weise als Speicherdrossel dimensioniert und sorgt dafür, dass nach der Kommutierung ein Stromfluss aufrecht erhalten bleibt.Another known from the prior art device is shown schematically in Fig. 1, wherein the input circuit, the
Beim Schalten der Schaltvorrichtung T1 entstehen sehr hohe Strom- und Spannungsänderungsgeschwindigkeiten, welche bei bevorzugten Anwendungen derartiger Schaltungen Funkstörungen im Bereich von 20 bis 200 MHz erzeugen können. Um die gesetzlichen Vorschriften einzuhalten, wird deshalb seriell zur Schaltvorrichtung T1 ein Dämpfungselement L2, bevorzugt ein Ferrit, angeordnet. Je nach Frequenzbereich kann das Dämpfungselement auch als Eisenblech oder als mindestens eine Leiterschleife ausgebildet sein.When switching the switching device T1 very high current and voltage change rates, which in preferred applications of such circuits May generate radio interference in the range of 20 to 200 MHz. To comply with the legal requirements, therefore, a damping element L2, preferably a ferrite, is arranged serially to the switching device T1. Depending on the frequency range, the damping element may also be formed as an iron sheet or as at least one conductor loop.
Im Falle der Verwendung eines dämpfenden Ferrits wird dieser im Stand der Technik bevorzugt auf ein Transistorbein gefädelt oder als separates Bauelement bestückt. Mit einem derartigen Dämpfungselement werden die hochfrequenten Schwingungen, die durch das Schalten des Schaltelements T1 hervorgerufen werden, gedämpft. Der Nachteil dieser bekannten Verschaltung des Dämpfungselements besteht darin, dass sie ein Dämpfungselement erfordert, das so ausgebildet sein muss, dass es bei Gleichstrom einen möglichst niedrigen und bei hochfrequentem Wechselstrom einen möglichst hohen Widerstand darstellt. Üblicherweise liegt das Verhältnis zwischen Widerstand bei Gleichstrom und Widerstand bei Wechselstrom bei einer Größenordnung von 1:1000. Der Gleichstromwiderstand liegt bevorzugt unter 100 mΩ, der Wechselstromwiderstand bei HF soll in der Größenordnung von 100 Ω liegen. Um diese Werte zu erreichen, muss das Dämpfungselement verhältnismäßig groß ausgeführt werden. Dies hat zur Folge, dass das Dämpfungselement im Stand der Technik nicht in SMD realisiert werden kann, sondern als diskretes Bauteil in Handarbeit auf der Platine montiert werden muss. Die Größe wirkt sich auch negativ auf den in einem elektrischen Vorschaltgerät ohnehin knapp bemessenen Platz aus.In the case of using a damping ferrite, this is preferably threaded in the prior art onto a transistor leg or fitted as a separate component. With such a damping element, the high-frequency vibrations caused by the switching of the switching element T1 are attenuated. The disadvantage of this known interconnection of the damping element is that it requires a damping element, which must be designed so that it is as low as possible with direct current and as high as possible with high-frequency alternating current. Usually, the ratio between resistance at DC and resistance at AC is on the order of 1: 1000. The DC resistance is preferably below 100 mΩ, the AC resistance at HF should be in the order of 100 Ω. To achieve these values, the damping element must be made relatively large. This has the consequence that the damping element in the prior art can not be implemented in SMD, but must be mounted as a discrete component by hand on the board. The size also has a negative effect on the space already tight in an electric ballast anyway.
Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, ein gattungsgemäßes elektronisches Vorschaltgerät derart weiterzubilden, dass eine automatische Montage ermöglicht wird und eine deutliche Reduktion des vom Dämpfungselement eingenommenen Raums erzielt werden kann.The present invention is therefore based on the object, a generic electronic ballast in such a way that an automatic assembly is made possible and a significant reduction of the space occupied by the damping element can be achieved.
Diese Aufgabe wird gelöst durch ein elektronisches Vorschaltgerät mit den Merkmalen von Patentanspruch 1. Der Erfindung liegt die Erkenntnis zugrunde, dass das Dämpfungselement deutlich kleiner ausgeführt werden kann, wenn es nicht mehr vom Hauptstrom durchflossen wird. Dadurch, dass das Dämpfungselement in geschickter Art und Weise in einem Nebenstromkreis angeordnet wird, wird es nicht mehr vom Laststrom durchflossen, so dass der DC-Widerstand nur noch eine untergeordnete Rolle spielt. Dennoch kann es dabei die von ihm gewünschte Dämpfung hochfrequenter Schwingungen bewirken. Bei gleicher Dämpfung kann daher ein deutlich kleineres Bauelement gewählt werden als bei der bekannten Realisierung. Wird die Baugröße beibehalten, können mit dem erfindungsgemäßen elektronischen Vorschaltgerät deutlich bessere Dämpfungseigenschaften erreicht werden als beim Stand der Technik.This object is achieved by an electronic ballast with the features of claim 1. The invention is based on the finding that the damping element can be made significantly smaller, if it is no longer traversed by the main stream. The fact that the damping element is arranged in a clever manner in a secondary circuit, it is no longer flows through the load current, so that the DC resistor plays only a minor role. Nevertheless, it can cause the desired damping of high-frequency vibrations. At the same damping Therefore, a significantly smaller component can be selected as in the known implementation. If the size is maintained, significantly better damping properties can be achieved with the electronic ballast according to the invention than in the prior art.
Bevorzugt sind die Schaltvorrichtung und die Freilaufdiode als zwei separate Halbleiterbauelemente ausgeführt, z.B. als Feldeffekttransistor.Preferably, the switching device and the freewheeling diode are designed as two separate semiconductor components, e.g. as field effect transistor.
Weiterhin ist bevorzugt, dass die Spannungskonvertervorrichtung so ausgelegt ist, dass vor der Kommutierung die Schaltvorrichtung und nach der Kommutierung die Freilaufdiode von Strom durchflossen wird, oder umgekehrt, und zwischen diesen beiden Phasen die mindestens eine Serienschaltung aus Dämpfungselement und Trapezkondensator von Strom durchflossen wird.Furthermore, it is preferred that the voltage converter device is designed so that before the commutation, the switching device and after commutation the freewheeling diode is traversed by current, or vice versa, and between these two phases, the at least one series circuit of damping element and trapezoidal capacitor is traversed by current.
In bevorzugten Ausführungsformen ist genau eine Serienschaltung aus Dämpfungselement und Trapezkondensator vorhanden, die parallel zur Schaltvorrichtung oder parallel zur Freilaufdiode angeordnet ist. Alternativ können zwei Serienschaltungen aus jeweils einem Dämpfungselement und einem Trapezkondensator vorhanden sein, wobei eine erste derartige Serienschaltung parallel zur Schaltvorrichtung und eine zweite derartige Serienschaltung parallel zur Freilaufdiode angeordnet ist.In preferred embodiments, exactly one series circuit of damping element and trapezoidal capacitor is provided, which is arranged parallel to the switching device or parallel to the freewheeling diode. Alternatively, two series circuits each consisting of a damping element and a trapezoidal capacitor may be provided, wherein a first such series connection is arranged parallel to the switching device and a second such series connection is arranged parallel to the free-wheeling diode.
Wie bereits erwähnt kann das Dämpfungselement je nach Frequenzbereich, in dem die Spannungskonvertervorrichtung arbeitet, als Ferrit, als Eisenblech oder als mindestens eine Leiterschleife ausgebildet sein. Bevorzugt ist das mindestens eine Dämpfungselement als SMD-Bauelement ausgeführt, wodurch eine einfache automatische Montage ermöglicht wird.As already mentioned, depending on the frequency range in which the voltage converter device operates, the damping element can be formed as ferrite, as iron sheet or as at least one conductor loop. Preferably, the at least one damping element is designed as an SMD component, whereby a simple automatic assembly is made possible.
Weitere vorteilhafte Ausführungsformen ergeben sich aus den Unteransprüchen. Im Nachfolgenden werden Ausführungsbeispiele der Erfindung unter Bezugnahme auf die beigefügten Zeichnungen näher beschrieben.Further advantageous embodiments will become apparent from the dependent claims. Hereinafter, embodiments of the invention will be described in more detail with reference to the accompanying drawings.
Es zeigen:
- Fig. 1
- in schematischer Darstellung die Baugruppen eines aus dem Stand der Technik bekannten elektronischen Vorschaltgeräts;
- Fig. 2
- eine aus dem Stand der Technik bekannte Spannungskonvertervorrichtung wie sie beispielhaft in der im elektronischen Vorschaltgerät von Fig. 1 eingesetzt wird;
- Fig. 3
- drei unterschiedliche Ausführungsformen der Spannungskonvertervorrichtung bei einem erfindungsgemäßen elektronischen Vorschaltgerät, wobei die jeweilige Spannungskonvertervorrichtung als Tiefsetzsteller ausgeführt ist;
- Fig. 4
- zwei unterschiedliche Ausführungsformen der Spannungskonvertervorrichtung bei einem erfindungsgemäßen elektronischen Vorschaltgerät, wobei die jeweilige Spannungskonvertervorrichtung als Hochsetzsteller ausgeführt ist.
- Fig. 1
- a schematic representation of the assemblies of a known from the prior art electronic ballast;
- Fig. 2
- a known from the prior art voltage converter device as used by way of example in the electronic ballast of Figure 1.
- Fig. 3
- three different embodiments of the voltage converter device in an electronic ballast according to the invention, wherein the respective voltage converter device is designed as a buck converter;
- Fig. 4
- two different embodiments of the voltage converter device in an electronic ballast according to the invention, wherein the respective voltage converter device is designed as a boost converter.
Figur 3 zeigt drei unterschiedliche Ausführungsformen einer Spannungskonvertervorrichtung, wie sie bei einem erfindungsgemäßen elektronischen Vorschaltgerät verwendet wird. Die drei in Fig. 3 dargestellten Ausführungsformen dienen jeweils der Realisierung eines Tiefsetzstellers. Mit Bezug auf die in Fig. 3a dargestellte Ausführungsform wird vor der Kommutierung ein erster Hauptstromkreis definiert, der vorliegend gestrichelt eingezeichnet ist und die Bauelemente Eingangskondensator C1, Schaltvorrichtung T1, Induktivität L1 und Ausgangskondensator C2 umfasst. Nach der Kommutierung wird ein zweiter Hauptstromkreis definiert, dadurch dass der Strom in dem strichpunktiert eingezeichneten Kreis fließt, der die Freilaufdiode D1, die Induktivität L1 sowie den Ausgangskondensator C2 umfasst. Während der Kommutierung fließt der Strom durch die Serienschaltung aus Trapezkondensator C3 und Dämpfungselement L2 sowie Ausgangskondensator C2. Im Hinblick auf den Stromfluss vor und nach der Kommutierung , wodurch jeweils ein Hauptstromkreis definiert wird, ist die Serienschaltung aus Trapezkondensator C3 und Dämpfungselement L2 in einem Nebenstromkreis angeordnet.Figure 3 shows three different embodiments of a voltage converter device, as used in an electronic ballast according to the invention. The three embodiments shown in FIG. 3 each serve to implement a step-down converter. With reference to the embodiment illustrated in FIG. 3a, a first main circuit is defined before the commutation, which is shown here by dashed lines and the components comprise input capacitor C1, switching device T1, inductance L1 and output capacitor C2. After commutation, a second main circuit is defined, characterized in that the current flows in the dash-dotted line comprising the free-wheeling diode D1, the inductance L1 and the output capacitor C2. During commutation, the current flows through the series circuit of trapezoidal capacitor C3 and damping element L2 and output capacitor C2. With regard to the current flow before and after the commutation, whereby a main circuit is defined in each case, the series circuit of trapezoidal capacitor C3 and damping element L2 is arranged in a secondary circuit.
In der Ausführungsform gemäss den Figuren 3b und 3c umfasst der jeweilige Hauptstromkreis vor der Kommutierung und der jeweilige Hauptstromkreis nach der Kommutierung dieselben Elemente wie bereits im Zusammenhang mit der Ausführungsform von Fig. 3a ausgeführt. Der Übersichtlichkeit halber ist daher in den Figuren gemäß den Ausführungsformen 3b und 3c nur der Stromfluss während der Kommutierung punktiert eingetragen. Während in der Ausführungsform gemäss der Figur 3b die Serienschaltung aus Dämpfungselement L2 und Trapezkondensator C3 in einem Nebenstromkreis angeordnet ist, der parallel zur Schaltvorrichtung T1 angeordnet ist, sind in der Ausführungsform gemäss Fig. 3c im Vergleich mit der Ausführungsform gemäss Fig. 3b zwei Serienschaltungen aus Dämpfungselement und Trapezkondensator vorhanden, nämlich eine erste Serienschaltung, die das Dämpfungselement L2a und den Trapezkondensator C3a umfasst, und eine zweite Serienschaltung, die das Dämpfungselement L2b und den Trapezkondensator C3b umfasst. Die erste Serienschaltung ist parallel zur Schaltvorrichtung T1 angeordnet, während die zweite Serienschaltung parallel zur Freilaufdiode D1 angeordnet ist. Mit Bezug auf die vor und nach der Kommutierung definierten Hauptstromkreise befinden sich beide Serienschaltungen jeweils in einem Nebenstromkreis.In the embodiment according to FIGS. 3b and 3c, the respective main circuit before commutation and the respective main circuit after commutation comprise the same elements as already used in connection with the embodiment of FIG. 3a executed. For the sake of clarity, therefore, only the current flow during the commutation is dotted registered in the figures according to the embodiments 3b and 3c. While in the embodiment according to FIG. 3b the series circuit of damping element L2 and trapezoidal capacitor C3 is arranged in a branch circuit which is arranged parallel to the switching device T1, in the embodiment according to FIG. 3c two series circuits are formed in comparison with the embodiment according to FIG. 3b Damping element and trapezoidal capacitor present, namely a first series circuit comprising the attenuation element L2a and the trapezoidal capacitor C3a, and a second series circuit comprising the attenuation element L2b and the trapezoidal capacitor C3b. The first series connection is arranged parallel to the switching device T1, while the second series circuit is arranged parallel to the free-wheeling diode D1. With respect to the main circuits defined before and after commutation, both series circuits are each in a subcircuit.
Die in Fig. 4a und Fig. 4b dargestellten Ausführungsformen einer Spannungskonvertervorrichtung eines erfindungsgemäßen elektronischen Vorschaltgeräts realisieren jeweils einen Hochsetzsteller. In den beiden Ausführungsformen umfasst der Hauptstromkreis vor der Kommutierung die Elemente Eingangskondensator C1, Induktivität L1 und Schaltvorrichtung T1, der Hauptstromkreis nach der Kommutierung die Elemente Eingangskondensator C1, Induktivität L1, Freilaufdiode D1 und Ausgangskondensator C2. Während der Kommutierungsphase fließt der Strom bei der Ausführungsform gemäss Fig. 4a durch die Bauelemente Eingangskondensator C1, Induktivität L1, Dämpfungselement L2 und Trapezkondensator C3. Bei der Ausführungsform gemäß Fig. 4b fließt der Strom während der Kommutierungsphase durch die Bauelemente Eingangskondensator C1, Induktivität L1, Dämpfungselement L2, Trapezkondensator C3 und Ausgangskondensator C2.The embodiments of a voltage converter device of an electronic ballast according to the invention illustrated in FIGS. 4 a and 4 b each realize a step-up converter. In the two embodiments, the main circuit before commutation comprises the elements input capacitor C1, inductance L1 and switching device T1, the main circuit after commutation comprises the elements input capacitor C1, inductance L1, freewheeling diode D1 and output capacitor C2. During the commutation phase, the current flows in the embodiment according to FIG. 4a through the components input capacitor C1, inductance L1, attenuation element L2 and trapezoidal capacitor C3. In the embodiment according to FIG. 4b, during the commutation phase the current flows through the components input capacitor C1, inductance L1, damping element L2, trapezoidal capacitor C3 and output capacitor C2.
Neben den dargestellten Ausführungsformen kann eine Spannungskonvertervorrichtung bei dem erfindungsgemäßen Vorschaltgerät auch die serielle Anordnung eines Hochsetzstellers und eines Tiefsetzstellers umfassen, wobei beispielsweise der Hochsetzsteller der Powerfaktorkorrektur dient und der Tiefsetzsteller der Einstellung des für den Ausgangskreis 14 gewünschten Spannungsniveaus.In addition to the illustrated embodiments, a voltage converter device in the ballast according to the invention also include the serial arrangement of a boost converter and a buck converter, for example, the boost converter of the power factor correction is used and the buck converter of the setting of the
Claims (7)
- Electronic ballast for a lamp (16) having- an input circuit (10) having a connection to a voltage supply,- an output circuit (14) having a connection for the lamp (16), and- a voltage converter apparatus (12), which is arranged between the input and the output circuit (10, 14), the voltage converter apparatus comprising an input capacitor (C1) and an output capacitor (C2), between which a switching apparatus (T1) and a freewheeling diode (D1) as well as at least one damping element (L2), at least one trapezoidal capacitor (C3) and an inductance (L1), as an energy-storage inductor, are arranged, the voltage converter apparatus (12) being designed to carry out commutation,- based on a commutation process, a first main circuit, through which a main current flows, being defined prior to commutation and a second main circuit, through which the main current flows, being defined following commutation, as well as at least one secondary circuit, through which the main current does not flow,- the at least one secondary circuit comprising the at least one damping element (L2) and the at least one trapezoidal capacitor (C3),characterized in that the at least one secondary circuit comprises precisely one of the at least one damping elements (L2) and one of the at least one trapezoidal capacitors (C3), which are connected in series with one another, the at least one secondary circuit being arranged in parallel with the switching apparatus (T1) and/or in parallel with the freewheeling diode (D1).
- Electronic ballast according to Claim 1, characterized in that the switching apparatus (T1) and the freewheeling diode (D1) are in the form of two separate semiconductor components.
- Electronic ballast according to either of Claims 1 and 2, characterized in that the voltage converter apparatus (12) is designed such that, prior to commutation, the switching apparatus (T1) and, following commutation, the freewheeling diode (D1) has current flowing through it, or vice versa, and, between these two phases, the at least one secondary circuit has current flowing through it.
- Electronic ballast according to one of the preceding claims, characterized in that precisely one secondary circuit having a series circuit comprising a damping element (L2) and a trapezoidal capacitor (C3) is provided, this secondary circuit being arranged in parallel with the switching apparatus (T1) or in parallel with the freewheeling diode (D1).
- Electronic ballast according to one of claims 1 to 3, characterized in that two secondary circuits each having a series circuit comprising a damping element (L2a, L2b) and a trapezoidal capacitor (C3a, C3b) are provided, the first secondary circuit being arranged in parallel with the switching apparatus (T1) and the second secondary circuit being arranged in parallel with the freewheeling diode (D1).
- Electronic ballast according to one of the preceding claims, characterized in that the damping element (L2, L2a, L2b) is in the form of ferrite, in the form of an iron sheet or in the form of at least one conductor loop.
- Electronic ballast according to one of the preceding claims, characterized in that the at least one damping element (L2, L2a, L2b) is in the form of an SMD component.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004022571A DE102004022571A1 (en) | 2004-05-07 | 2004-05-07 | Electronic ballast for a lamp |
| DE102004022571 | 2004-05-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1594349A1 EP1594349A1 (en) | 2005-11-09 |
| EP1594349B1 true EP1594349B1 (en) | 2007-02-21 |
Family
ID=34935568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05008806A Not-in-force EP1594349B1 (en) | 2004-05-07 | 2005-04-21 | Electronic ballast for a lamp |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7193372B2 (en) |
| EP (1) | EP1594349B1 (en) |
| JP (1) | JP4833584B2 (en) |
| AT (1) | ATE354933T1 (en) |
| CA (1) | CA2506368A1 (en) |
| DE (2) | DE102004022571A1 (en) |
| TW (1) | TWI422283B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005056255A1 (en) * | 2005-11-25 | 2007-06-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Circuit device with overhead buck transistor |
| KR100823194B1 (en) * | 2006-11-20 | 2008-04-18 | 삼성에스디아이 주식회사 | Plasma display apparatus and driving device thereof |
| US7579814B2 (en) * | 2007-01-12 | 2009-08-25 | Potentia Semiconductor Corporation | Power converter with snubber |
| DE102008044372A1 (en) | 2008-12-05 | 2010-06-10 | Robert Bosch Gmbh | Switching arrangement for lighting device, has lighting unit and electronic control gear, where electronic control gear has switch transistor |
| DE102016223153A1 (en) | 2016-11-23 | 2018-05-24 | Osram Gmbh | OPERATING A BALLAST FOR A GAS DISCHARGE LAMP |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06101930B2 (en) * | 1988-09-16 | 1994-12-12 | 九州大学長 | Switching power supply |
| JPH05328714A (en) * | 1991-04-24 | 1993-12-10 | Shindengen Electric Mfg Co Ltd | Dc-dc converter |
| JP3261142B2 (en) * | 1991-05-15 | 2002-02-25 | 松下電工株式会社 | Discharge lamp lighting device |
| JPH07274500A (en) * | 1994-03-24 | 1995-10-20 | Sony Corp | Power circuit |
| US5528111A (en) * | 1994-12-02 | 1996-06-18 | Motorola, Inc. | Ballast circuit for powering gas discharge lamp |
| JP3036694U (en) * | 1995-03-20 | 1997-05-02 | スーパー・３−ディー・オプティカル・エクィプメンツ・カンパニー・リミテッド | 3D photo exposure system |
| US5932974A (en) * | 1996-06-04 | 1999-08-03 | International Rectifier Corporation | Ballast circuit with lamp removal protection and soft starting |
| JP2859611B2 (en) * | 1998-04-17 | 1999-02-17 | 株式会社東芝 | Switching regulator |
| US5969484A (en) * | 1998-05-14 | 1999-10-19 | Optimum Power Conversion, Inc. | Electronic ballast |
| JP3374916B2 (en) * | 2000-10-02 | 2003-02-10 | サンケン電気株式会社 | DC-DC converter |
| US6465991B1 (en) * | 2001-07-30 | 2002-10-15 | Koninklijke Philips Electronics N.V. | Switchable power converter with coupled inductor boost and coupled inductor SEPIC for multiple level input line power factor correction |
| WO2003039206A1 (en) * | 2001-10-31 | 2003-05-08 | Koninklijke Philips Electronics N.V. | Ballasting circuit |
| DE10200046A1 (en) * | 2002-01-02 | 2003-07-17 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Control gear for high-pressure discharge lamps |
-
2004
- 2004-05-07 DE DE102004022571A patent/DE102004022571A1/en not_active Withdrawn
-
2005
- 2005-04-21 EP EP05008806A patent/EP1594349B1/en not_active Not-in-force
- 2005-04-21 DE DE502005000388T patent/DE502005000388D1/en active Active
- 2005-04-21 AT AT05008806T patent/ATE354933T1/en not_active IP Right Cessation
- 2005-05-03 TW TW094114233A patent/TWI422283B/en not_active IP Right Cessation
- 2005-05-04 US US11/121,066 patent/US7193372B2/en not_active Expired - Fee Related
- 2005-05-04 CA CA002506368A patent/CA2506368A1/en not_active Abandoned
- 2005-05-06 JP JP2005135335A patent/JP4833584B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TWI422283B (en) | 2014-01-01 |
| EP1594349A1 (en) | 2005-11-09 |
| US7193372B2 (en) | 2007-03-20 |
| TW200607402A (en) | 2006-02-16 |
| US20050248293A1 (en) | 2005-11-10 |
| JP2005322652A (en) | 2005-11-17 |
| DE102004022571A1 (en) | 2005-12-08 |
| JP4833584B2 (en) | 2011-12-07 |
| DE502005000388D1 (en) | 2007-04-05 |
| ATE354933T1 (en) | 2007-03-15 |
| CA2506368A1 (en) | 2005-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102017217132B3 (en) | Switching power supply with electrical circuitry for input protection circuit | |
| EP0763276B1 (en) | Switching power supply for the operation of electric lamps | |
| DE102005002359B4 (en) | Current limiting circuit and method of operating the circuit | |
| DE4210092A1 (en) | DAMPING CIRCUIT FOR POWER CONVERTERS | |
| DE19548506A1 (en) | Circuit arrangement for operating a lamp | |
| DE102011006769A1 (en) | Power conversion circuit | |
| EP1594349B1 (en) | Electronic ballast for a lamp | |
| WO2008138863A2 (en) | Network filter for a converter for connection of the converter to a three-phase supply network | |
| DE102005016047A1 (en) | Switchable voltage converter | |
| DE10225409B4 (en) | Current-compensated choke and circuit arrangement with the current-compensated choke | |
| DE102009042433B4 (en) | Circuit arrangement for operating at least one LED | |
| DE19607201A1 (en) | Anti-HF-noise filter for voltage source inverter | |
| EP2168229A1 (en) | Circuit arrangement comprising a voltage transformer and associated method | |
| EP3376659A1 (en) | Welding current source | |
| DE102006026465B4 (en) | Filter for an electrical equipment, in particular for a switching power supply, a power supply or a frequency converter | |
| WO2013075749A1 (en) | Electronic circuit and method for triggering a semiconductor switch | |
| WO2012022555A1 (en) | Circuit, network filter, operating device und lighting apparatus or lamp | |
| DE102018010146A1 (en) | Device for filtering high-frequency interference voltages in a circuit for power factor correction | |
| DE102009035371B4 (en) | Electronic ballast for operating at least one discharge lamp | |
| EP0952759B1 (en) | Electronic transformer | |
| DE102004042771B4 (en) | Circuit arrangement and method for dimming at least one lamp | |
| EP2997652B1 (en) | Dampening circuit for a transformer in a switch mode converter | |
| AT521626B1 (en) | Inverting buck converter with low switching losses | |
| EP0855849B1 (en) | Electronic transformer | |
| DE10138751A1 (en) | DC-AC converter with fast electronic, especially IGBT, switches has full bridge circuit switches not on common bridge diagonal connected together with d.c. storage choke and diode |
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 |
|
| 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 MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
|
| 17P | Request for examination filed |
Effective date: 20051205 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 502005000388 Country of ref document: DE Date of ref document: 20070405 Kind code of ref document: P |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070521 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070521 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070601 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20070523 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070621 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070723 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| ET | Fr: translation filed | ||
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| BERE | Be: lapsed |
Owner name: PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUH Effective date: 20070430 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 |
|
| 26N | No opposition filed |
Effective date: 20071122 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070430 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070522 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070421 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070430 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070421 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070822 Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20070221 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090430 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090430 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20110421 Year of fee payment: 7 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502005000388 Country of ref document: DE Owner name: OSRAM GMBH, DE Free format text: FORMER OWNER: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG, 81543 MUENCHEN, DE Effective date: 20111213 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120421 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502005000388 Country of ref document: DE Owner name: OSRAM GMBH, DE Free format text: FORMER OWNER: OSRAM AG, 81543 MUENCHEN, DE Effective date: 20130205 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502005000388 Country of ref document: DE Owner name: OSRAM GMBH, DE Free format text: FORMER OWNER: OSRAM GMBH, 81543 MUENCHEN, DE Effective date: 20130823 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20220420 Year of fee payment: 18 Ref country code: FR Payment date: 20220420 Year of fee payment: 18 Ref country code: DE Payment date: 20220420 Year of fee payment: 18 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502005000388 Country of ref document: DE |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20230421 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230421 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230421 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230430 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231103 |