EP0382307A2 - Switching power supply device - Google Patents
Switching power supply device Download PDFInfo
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- EP0382307A2 EP0382307A2 EP90200258A EP90200258A EP0382307A2 EP 0382307 A2 EP0382307 A2 EP 0382307A2 EP 90200258 A EP90200258 A EP 90200258A EP 90200258 A EP90200258 A EP 90200258A EP 0382307 A2 EP0382307 A2 EP 0382307A2
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- Prior art keywords
- power supply
- supply device
- winding
- choke
- transducer
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
- G05F1/34—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices
- G05F1/38—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
Definitions
- the invention relates to a clocked power supply device with a controllable switch in series with a primary winding of a transformer and with at least one secondary circuit with a transducer choke connected to a regulator.
- a clocked power supply device is known with a switching element which is arranged in series with a primary winding, one Saturation choke is connected in series with a secondary winding of the transformer.
- a control circuit controls a current of the saturation choke to keep a DC voltage occurring at the output terminals constant.
- the saturation choke has a wound core made of amorphous metallic magnetic material, the band thickness of which is in the range from four to sixty micrometers.
- the invention has for its object to provide a clocked power supply device of the type mentioned, which has a high stability of the output voltage and a precise and fast control behavior with respect to the magnetization of the transducer choke, especially at high switching frequency of the controllable switch (e.g. 100 kHz to 1 MHz).
- transducer choke has a core made of ferrite material and in that the controller delivers a positive or negative control current for magnetizing the transducer choke.
- FIG. 1 shows a clocked power supply device with a transformer Tr, which has a primary winding N0 and a secondary winding N1.
- the transformer Tr translates voltage and current and galvanically isolates input and output.
- In series with the primary winding N0 is e.g. arranged as a transistor, designed controllable switch S.
- a capacitor C0 is connected in parallel with the input terminals at which the voltage U0 is present.
- a power winding W1 of a transducer choke L0 and a rectifier diode D1 are arranged in series with the secondary winding N1.
- a freewheeling diode D2 is connected in parallel with the series circuit comprising the secondary winding N1, power winding W1 and rectifier diode D1.
- a series reactor L1 is arranged in series with the arrangement of secondary winding N1, power winding W1, rectifier diode D1 and free-wheeling diode D2.
- a capacitor C1 is connected in parallel with the output terminals at which a voltage U1 occurs.
- the control winding W2 of the transducer choke L0 is connected to the secondary winding N1 and to a regulator R, which supplies a regulating signal for regulating the voltage U1.
- the rectifier diode D1 is conductive, the current flows after the transducer inductor L0 has been switched through to the load (not shown) and the storage inductor L1 absorbs energy, the freewheeling diode D2 being blocked.
- the current flows from the storage inductor L1 through the freewheeling diode D2 into the load.
- the regulator R is connected on the input side to the output terminals at which the voltage U1 is present. In this way, a control criterion is obtained, which is a corresponding control signal in the form of a control current with IS at the output of controller R.
- the control current IS flowing to the control winding W2 of the transducer inductor L0 causes a change in the time in which the power winding W1 of the transducer inductor L0 blocks and thus regulates or stabilizes the voltage U1.
- the transducer choke L0 has a power winding W1 and a control winding W2, which is connected to the regulator R and to the secondary winding N1.
- the control winding W2 is advantageously connected to one side of the secondary winding N1.
- the control winding W2 can lead both a positive control current IS for magnetization and a negative control current IS for demagnetization of the transducer choke L0 (FIG. 2).
- the control winding W2 of the transducer choke advantageously has a higher number of turns than the power winding W1, since this leads to smaller control currents IS.
- the transducer choke has further control windings and possibly further power windings.
- the transducer choke L0 has only one winding which works both as a power winding and as a control winding.
- the forward converter circuit in parallel with the series connection of the rectifier diode D1 and the storage inductor L1, has a dashed series connection comprising a further rectifier diode D3 and a resistor R.
- This causes a current IN which demagnetizes the transducer choke.
- the regulation then only takes place via the change in the positive control current IS.
- Transductors chokes with cores made of amorphous material which have been used up to now, are suitable for switching frequencies of the controllable switch up to approximately 150 kHz, since the losses increase sharply at switching frequencies above 150 kHz.
- ferrite cores are well suited for high switching frequencies above 150 kHz and are also considerably cheaper than amorphous cores.
- FIG. 2 schematically shows a hysteresis curve of a transducer choke with a core made of ferrite material.
- the magnetic induction B initially increases in accordance with the slope of the characteristic curve until saturation is reached. If the current through the transducer choke and thus the magnetic field strength H is again reduced to the value 0, the remanence point Br of the magnetic induction is set as the operating point.
- the remanence point Br of a transducer choke with a core made of ferrite material is very low compared to a transducer choke with a core made of amorphous material. As a result, the transducer choke blocks a voltage time area corresponding to the induction stroke BR.
- the control current IS of the controller R connected to the transducer choke, in particular via the control winding W2 makes it possible to set further operating points on the hysteresis curve in such a way that they have a desired, usually smaller, induction stroke and thus block a smaller voltage time area.
- a positive control current IS for magnetizing the transducer choke L0 can set an operating point 1 which has a smaller induction stroke BI and blocks a correspondingly smaller voltage time area.
- an operating point 2 with a correspondingly larger induction stroke by means of a negative control current IS for demagnetizing the transducer choke L0.
- a negative control current IS for demagnetizing the transducer choke L0.
- the voltage U1 is then regulated only via a positive control current IS.
- the clocked power supply device has at least one flyback converter circuit, a flyback converter circuit or a forward converter circuit being able to contain a controller designed as a main control loop for regulating the pulse width of the controllable switch S.
- the controllable switch S is controlled by pulses, the width of which is modulated as a function of load fluctuations in one of the output voltages.
- the measures described above make it possible to set any points on the hysteresis curve, in particular between the remanence point Br and the saturation induction, in particular in the case of single-ended converters but also in push-pull converters by the magnetization and / or demagnetization of the ferrite core of the transducer choke. Even at high switching frequencies of the controllable switch, for example above 150 kHz, this leads to a precise and fast control behavior of the magnetization of the transducer choke and thus to a high stability of the output voltage.
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Abstract
Description
Die Erfindung betrifft eine getaktete Stromversorgungseinrichtung mit einem steuerbaren Schalter in Reihe mit einer Primärwicklung eines Transformators und mit mindestens einem Sekundärkreis mit einer mit einem Regler verbundenen Transduktordrossel.The invention relates to a clocked power supply device with a controllable switch in series with a primary winding of a transformer and with at least one secondary circuit with a transducer choke connected to a regulator.
Für die Versorgung elektronischer Geräte werden Stromversorgungseinrichtungen benötigt, die eine oder mehrere Gleichspannungen liefern. In der Regel wird eine Regelung bzw. Stabilisierung dieser Gleichspannungen und galvanische Trennung verlangt. Bei getakteten Stromversorgungseinrichtungen sind die Grundtypen Sperrwandler und Durchflußwandler zu unterscheiden. Die z.B. aus der Netzspannung durch Gleichrichtung und Siebung gewonnene Gleichspannung wird in der Regel mit Hilfe eines schnellschaltenden Transistors in eine Rechteckspannung umgewandelt. Diese wird mit Hilfe eines Transformators übertragen, der im Fall des Sperrwandlers auch die Energiespeicherung übernimmt. Anschließend wird gleichgerichtet und gesiebt. Bei einem Sperrwandler fließt nur während der Sperrphase im Sekundärkreis ein Strom, während bei einem Durchflußwandler während der Leitphase Energie in den Lastkreis übertragen wird. Die Ausgangsspannung einer getakteten Stromversorgungseinrichtung wird beispielsweise durch die Anordnung einer vormagnetisierbaren Transduktordrossel im Sekundärkreis stabilisiert.Power supplies that supply one or more DC voltages are required to supply electronic devices. As a rule, regulation or stabilization of these DC voltages and galvanic isolation is required. A distinction must be made between the basic types of flyback converters and forward converters for clocked power supply devices. The e.g. DC voltage obtained from the mains voltage by rectification and screening is generally converted into a square-wave voltage with the aid of a fast-switching transistor. This is transmitted with the help of a transformer, which also takes over the energy storage in the case of the flyback converter. Then it is rectified and sieved. In the case of a flyback converter, current flows in the secondary circuit only during the flyback phase, while in the case of a forward converter, energy is transferred to the load circuit during the lead phase. The output voltage of a clocked power supply device is stabilized, for example, by arranging a pre-magnetizable transducer choke in the secondary circuit.
Aus DE-A 32 21 839 ist eine getaktete Stromversorgungseinrichtung bekannt mit einem Schaltglied, das in Reihe mit einer primärwicklung angeordnet ist, wobei eine Sättigungsdrossel in Reihe mit einer Sekundärwicklung des Transformators verbunden ist. Dabei steuert ein Steuerkreis einen Strom der Sättigungsdrossel zur Konstanthaltung einer an den Ausgangsklemmen auftretenden Gleichspannung. Die Sättigungsdrossel weist einen gewickelten Kern aus amorphem metallischem Magnetmaterial auf, dessen Banddicke im Bereich von vier bis sechzig Mikrometern liegt.From DE-A 32 21 839 a clocked power supply device is known with a switching element which is arranged in series with a primary winding, one Saturation choke is connected in series with a secondary winding of the transformer. A control circuit controls a current of the saturation choke to keep a DC voltage occurring at the output terminals constant. The saturation choke has a wound core made of amorphous metallic magnetic material, the band thickness of which is in the range from four to sixty micrometers.
Der Erfindung liegt die Aufgabe zugrunde, eine getaktete Stromversorgungseinrichtung der eingangs genannten Art anzugeben, die insbesondere bei hoher Schaltfrequenz des steuerbaren Schalters (z.B. 100 kHz bis 1 MHz) eine hohe Stabilität der Ausgangsspannung sowie ein genaues und schnelles Regelverhalten bezüglich der Magnetisierung der Transduktordrossel aufweist.The invention has for its object to provide a clocked power supply device of the type mentioned, which has a high stability of the output voltage and a precise and fast control behavior with respect to the magnetization of the transducer choke, especially at high switching frequency of the controllable switch (e.g. 100 kHz to 1 MHz).
Diese Aufgabe wird bei einer getakteten Stromversorgungseinrichtung der eingangs genannten Art dadurch gelöst, daß die Transduktordrossel einen Kern aus Ferritmaterial aufweist und daß der Regler einen positiven oder negativen Steuerstrom zur Magnetisierung der Transduktordrossel liefert.This object is achieved in a clocked power supply device of the type mentioned above in that the transducer choke has a core made of ferrite material and in that the controller delivers a positive or negative control current for magnetizing the transducer choke.
Vorteilhafte Ausgestaltungsformen sind in den Unteransprüchen enthalten.Advantageous embodiments are contained in the subclaims.
Im folgenden wird die Erfindung anhand der in den Figuren gezeichneten Ausführungsbeispiele näher erläutert.
Figur 1 zeigt eine getaktete Stromversorgungseinrichtung nach dem Durchflußwandlerprinzip mit einer steuerbaren Transduktordrossel.Figur 2 zeigt schematisch eine Hysteresekurve einer Transduktordrossel mit einem Kern aus Ferritmaterial.
- Figure 1 shows a clocked power supply device based on the forward converter principle with a controllable transducer choke.
- Figure 2 shows schematically a hysteresis curve Transductor choke with a core made of ferrite material.
Fig. 1 zeigt eine getaktete Stromversorgungseinrichtung mit einem Transformator Tr, welcher eine Primärwicklung N0 und eine Sekundärwicklung N1 besitzt. Der Transformator Tr übersetzt Spannung und Strom und trennt Eingang und Ausgang galvanisch. In Reihe zur Primärwicklung N0 ist ein, z.B. als Transistor, ausgebildeter steuerbarer Schalter S angeordnet. Parallel zu den Eingangsklemmen, an denen die Spannung U0 anliegt, ist ein Kondensator C0 geschaltet. In Reihe zur Sekundärwicklung N1 ist eine Leistungswicklung W1 einer Transduktordrossel L0 und eine Gleichrichterdiode D1 angeordnet. Parallel zu der Reihenschaltung aus Sekundärwicklung N1, Leistungswicklung W1 und Gleichrichterdiode D1 liegt eine Freilaufdiode D2. In Serie zu der Anordnung aus Sekundärwicklung N1, Leistungswicklung W1, Gleichrichterdiode D1 und Freilaufdiode D2 ist eine Speicherdrossel L1 angeordnet. Parallel zu den Ausgangsklemmen, an denen eine Spannung U1 auftritt, liegt ein Kondensator C1. Die Steuerwicklung W2 der Transduktordrossel L0 ist mit der Sekundärwicklung N1 und mit einem Regler R verbunden, der ein Regelsignal zur Regelung der Spannung U1 liefert.1 shows a clocked power supply device with a transformer Tr, which has a primary winding N0 and a secondary winding N1. The transformer Tr translates voltage and current and galvanically isolates input and output. In series with the primary winding N0 is e.g. arranged as a transistor, designed controllable switch S. A capacitor C0 is connected in parallel with the input terminals at which the voltage U0 is present. A power winding W1 of a transducer choke L0 and a rectifier diode D1 are arranged in series with the secondary winding N1. A freewheeling diode D2 is connected in parallel with the series circuit comprising the secondary winding N1, power winding W1 and rectifier diode D1. A series reactor L1 is arranged in series with the arrangement of secondary winding N1, power winding W1, rectifier diode D1 and free-wheeling diode D2. A capacitor C1 is connected in parallel with the output terminals at which a voltage U1 occurs. The control winding W2 of the transducer choke L0 is connected to the secondary winding N1 and to a regulator R, which supplies a regulating signal for regulating the voltage U1.
Während der Leitphase des steuerbaren Schalters S ist die Gleichrichterdiode D1 leitend, der Strom fließt nach dem Durchschalten der Transduktordrossel L0 zur nicht dargestellten Last und die Speicherdrossel L1 nimmt Energie auf, wobei die Freilaufdiode D2 gesperrt ist. Während der Sperrphase des steuerbaren Schalters S fließt der Strom aus der Speicherdrossel L1 weiter über die Freilaufdiode D2 in die Last. Der Regler R ist eingangsseitig mit den Ausgangsklemmen verbunden, an denen die Spannung U1 anliegt. Dadurch wird ein Regelkriterium gewonnen, das ein entsprechendes Regelsignal in Form eines Steuerstro mes IS am Ausgang des Reglers R zur Folge hat. Der zur Steuerwicklung W2 der Transduktordrossel L0 fließende Steuerstrom IS bewirkt eine Änderung der Zeit, in der die Leistungswicklung W1 der Transduktordrossel L0 sperrt und somit eine Regelung bzw. Stabilisierung der Spannung U1.During the conducting phase of the controllable switch S, the rectifier diode D1 is conductive, the current flows after the transducer inductor L0 has been switched through to the load (not shown) and the storage inductor L1 absorbs energy, the freewheeling diode D2 being blocked. During the blocking phase of the controllable switch S, the current flows from the storage inductor L1 through the freewheeling diode D2 into the load. The regulator R is connected on the input side to the output terminals at which the voltage U1 is present. In this way, a control criterion is obtained, which is a corresponding control signal in the form of a control current with IS at the output of controller R. The control current IS flowing to the control winding W2 of the transducer inductor L0 causes a change in the time in which the power winding W1 of the transducer inductor L0 blocks and thus regulates or stabilizes the voltage U1.
Bei dem in der Fig. 1 gezeigten Ausführungsbeispiel weist die Transduktordrossel L0 eine Leistungswicklung W1 und eine Steuerwicklung W2 auf, die mit dem Regler R und mit der Sekundärwicklung N1 verbunden ist. Der Anschluß der Steuerwicklung W2 erfolgt dabei vorteilhafterweise an einer Seite der Sekundärwicklung N1. Die Steuerwicklung W2 kann sowohl einen positiven Steuerstrom IS zur Aufmagnetisierung, als auch einen negativen Steuerstrom IS zur Abmagnetisierung der Transduktordrossel L0 führen (Fig. 2). Vorteilhafterweise besitzt die Steuerwicklung W2 der Transduktordrossel eine höhere Windungszahl als die Leistungswicklung W1, da dies zu kleineren Steuerströmen IS führt. Bei einer weiteren Ausgestaltungsform weist die Transduktordrossel weitere Steuerwicklungen und gegebenenfalls weitere Leistungswicklungen auf.In the exemplary embodiment shown in FIG. 1, the transducer choke L0 has a power winding W1 and a control winding W2, which is connected to the regulator R and to the secondary winding N1. The control winding W2 is advantageously connected to one side of the secondary winding N1. The control winding W2 can lead both a positive control current IS for magnetization and a negative control current IS for demagnetization of the transducer choke L0 (FIG. 2). The control winding W2 of the transducer choke advantageously has a higher number of turns than the power winding W1, since this leads to smaller control currents IS. In a further embodiment, the transducer choke has further control windings and possibly further power windings.
Bei einem weiteren in den Figuren nicht dargestellten Ausführungsbeispiel weist die Transduktordrossel L0 lediglich eine Wicklung auf, die sowohl als Leistungswicklung als auch als Steuerwicklung arbeitet.In a further exemplary embodiment, not shown in the figures, the transducer choke L0 has only one winding which works both as a power winding and as a control winding.
Bei dem in der Fig. 1 gezeigten Ausführungsbeispiel weist der Durchflußwandlerkreis parallel zu der Reihenschaltung der Gleichrichterdiode D1 und der Speicherdrossel L1 eine gestrichelt gezeichnete Reihenschaltung aus einer weiteren Gleichrichterdiode D3 und einem Widerstand R auf. Dadurch wird ein Strom IN hervorgerufen, der eine Abmagnetisierung der Transduktordrossel bewirkt. Bei diesem Ausführungsbeispiel erfolgt die Regelung dann lediglich über die Veränderung des positiven Steuerstromes IS.In the exemplary embodiment shown in FIG. 1, the forward converter circuit, in parallel with the series connection of the rectifier diode D1 and the storage inductor L1, has a dashed series connection comprising a further rectifier diode D3 and a resistor R. This causes a current IN which demagnetizes the transducer choke. In this exemplary embodiment, the regulation then only takes place via the change in the positive control current IS.
Bisher üblicherweise verwendete Transduktordrosseln mit Kernen aus amorphem Material sind für Schaltfrequenzen des steuerbaren Schalters bis ca. 150 kHz geeignet, da bei Schaltfrequenzen über 150 kHz die Verluste stark ansteigen. Ferritkerne sind dagegen für hohe Schaltfrequenzen über 150 kHz gut geeignet und sind zudem erheblich kostengünstiger als amorphe Kerne.Transductors chokes with cores made of amorphous material, which have been used up to now, are suitable for switching frequencies of the controllable switch up to approximately 150 kHz, since the losses increase sharply at switching frequencies above 150 kHz. In contrast, ferrite cores are well suited for high switching frequencies above 150 kHz and are also considerably cheaper than amorphous cores.
Fig. 2 zeigt schematisch eine Hysteresekurve einer Transduktordrossel mit einem Kern aus Ferritmaterial. Die magnetische Induktion B nimmt beim Erhöhen der magnetischen Feldstärke H zunächst entsprechend der Steigung der Kennlinie bis zum Erreichen der Sättigung zu. Wird der Strom durch die Transduktordrossel und damit die magnetische Feldstärke H wieder gegen den Wert 0 verringert, so stellt sich als Arbeitspunkt der Remanenzpunkt Br der magnetischen Induktion ein. Der Remanzenzpunkt Br einer Transduktordrossel mit einem Kern aus Ferritmaterial liegt sehr niedrig im Vergleich zu einer Transduktordrossel mit einem Kern aus amorphem Material. Dies hat zur Folge, daß die Transduktordrossel eine Spannungszeitfläche entsprechend dem Induktionshub BR sperrt. Durch den Steuerstrom IS des mit der Transduktordrossel insbesondere über die Steuerwicklung W2 verbundenen Reglers R ist es möglich, weitere Arbeitspunkte auf der Hysteresekurve so einzustellen, daß sie einen gewünschten, üblicherweise geringeren, Induktionshub aufweisen und somit eine geringere Spannungszeitfläche sperren. So läßt sich beispielsweise durch einen positiven Steuerstrom IS zur Aufmagnetisierung der Transduktordrossel L0 ein Arbeitspunkt 1 einstellen, der einen kleineren Induktionshub BI aufweist und eine entsprechend geringere Spannungszeitfläche sperrt.2 schematically shows a hysteresis curve of a transducer choke with a core made of ferrite material. When the magnetic field strength H is increased, the magnetic induction B initially increases in accordance with the slope of the characteristic curve until saturation is reached. If the current through the transducer choke and thus the magnetic field strength H is again reduced to the value 0, the remanence point Br of the magnetic induction is set as the operating point. The remanence point Br of a transducer choke with a core made of ferrite material is very low compared to a transducer choke with a core made of amorphous material. As a result, the transducer choke blocks a voltage time area corresponding to the induction stroke BR. The control current IS of the controller R connected to the transducer choke, in particular via the control winding W2, makes it possible to set further operating points on the hysteresis curve in such a way that they have a desired, usually smaller, induction stroke and thus block a smaller voltage time area. For example, a positive control current IS for magnetizing the transducer choke L0 can set an
Für bestimmte Anforderungen ist es auch möglich, durch einen negativen Steuerstrom IS zur Abmagnetisierung der Transduktordrossel L0 einen Arbeitspunkt 2 mit einem entsprechend größeren Induktionshub einzustellen. Durch das in Fig. 1 beschriebene Ausführungsbeispiel mit der Reihenschaltung aus der Gleichrichterdiode D3 und dem Widerstand R sowie dem dadurch hervorgerufenen Strom IN wird ebenfalls eine Abmagnetisierung der Transduktordrossel beispielsweise auf den Arbeitspunkt 2 erreicht. Die Regelung der Spannung U1 erfolgt dann lediglich über einen positiven Steuerstrom IS.For certain requirements it is also possible to set an
Bei einem weiteren Ausführungsbeispiel weist die getaktete Stromversorgungseinrichtung mindestens einen Sperrwandlerkreis auf, wobei ein Sperrwandlerkreis oder ein Durchflußwandlerkreis einen als Hauptregelkreis ausgebildeten Regler zur Regelung der Pulsbreite des steuerbaren Schalters S enthalten kann. Der steuerbare Schalter S wird dabei von Impulsen gesteuert, die in ihrer Breite in Abhängigkeit von Lastschwankungen einer der Ausgangsspannungen moduliert werden.In a further exemplary embodiment, the clocked power supply device has at least one flyback converter circuit, a flyback converter circuit or a forward converter circuit being able to contain a controller designed as a main control loop for regulating the pulse width of the controllable switch S. The controllable switch S is controlled by pulses, the width of which is modulated as a function of load fluctuations in one of the output voltages.
Durch die vorbeschriebenen Maßnahmen ist es somit möglich, insbesondere bei Eintaktwandlern aber auch bei Gegentaktwandlern durch die Auf- und/oder Abmagnetisierung des Ferritkernes der Transduktordrossel beliebige Punkte auf der Hysteresekurve, insbesondere zwischen dem Remanenzpunkt Br und der Sättigungsinduktion, einzustellen. Dies führt auch bei hohen Schaltfrequenzen des steuerbaren Schalters beispielsweise über 150 kHz zu einem genauen und schnellen Regelverhalten der Magnetisierung der Transduktordrossel und somit zu einer hohen Stabilität der Ausgangsspannung.The measures described above make it possible to set any points on the hysteresis curve, in particular between the remanence point Br and the saturation induction, in particular in the case of single-ended converters but also in push-pull converters by the magnetization and / or demagnetization of the ferrite core of the transducer choke. Even at high switching frequencies of the controllable switch, for example above 150 kHz, this leads to a precise and fast control behavior of the magnetization of the transducer choke and thus to a high stability of the output voltage.
Claims (7)
dadurch gekennzeichnet,
daß die Transduktordrossel (L0) einen Kern aus Ferritmaterial aufweist und der Regler (R) einen positiven oder negativen Steuerstrom (IS) zur Magnetisierung der Transduktordrossel (L0) liefert.1. Clocked power supply device with a controllable switch (S) in series with a primary winding (N0) of a transformer (Tr) and with at least one forward converter circuit with a secondary winding (N1) in series with a transducer choke (L0) connected to a regulator (R) ,
characterized by
that the transducer choke (L0) has a core made of ferrite material and the controller (R) delivers a positive or negative control current (IS) for magnetizing the transducer choke (L0).
dadurch gekennzeichnet,
daß die Transduktordrossel (L0) eine Wicklung aufweist, die sowohl als Leistungswicklung als auch als Steuerwicklung dient.2. Clocked power supply device according to claim 1,
characterized by
that the transducer choke (L0) has a winding that serves both as a power winding and as a control winding.
dadurch gekennzeichnet,
daß die Transduktordrossel (L0) mindestens eine Leistungswicklung (W1) und mindestens eine Steuerwicklung (W2) aufweist, wobei die Steuerwicklung (W2) mit dem Regler (R) verbunden ist.3. Clocked power supply device according to one of claims 1 or 2,
characterized by
that the transducer choke (L0) has at least one power winding (W1) and at least one control winding (W2), the control winding (W2) being connected to the controller (R).
dadurch gekennzeichnet,
daß die Steuerwicklung (W2) mit der Sekundärwicklung (N1) verbunden ist.4. Clocked power supply device according to one of claims 1 to 3,
characterized by
that the control winding (W2) with the secondary winding (N1) connected is.
dadurch gekennzeichnet,
daß der Durchflußwandlerkreis parallel zu der Reihenschaltung einer ersten Gleichrichterdiode (D1) und einer Speicherdrossel (L1) eine Reihenschaltung aus einer weiteren Gleichrichterdiode (D3) und einem Widerstand (R) aufweist.5. clocked power supply device according to one of claims 1 to 4,
characterized by
that the forward converter circuit has a series circuit comprising a further rectifier diode (D3) and a resistor (R) in parallel with the series circuit of a first rectifier diode (D1) and a storage inductor (L1).
dadurch gekennzeichnet,
daß die Stromversorgungseinrichtung mindestens einen Sperrwandlerkreis aufweist.6. Clocked power supply device according to one of claims 1 to 5,
characterized by
that the power supply device has at least one flyback converter circuit.
dadurch gekennzeichnet,
daß ein Sperrwandler- oder ein Durchflußwandlerkreis einen Hauptregelkreis zur Regelung der Pulsbreite des steuerbaren Schalters (S) aufweist.7. Clocked power supply device according to one of claims 1 to 6,
characterized by
that a flyback converter or a forward converter circuit has a main control circuit for regulating the pulse width of the controllable switch (S).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3903763A DE3903763A1 (en) | 1989-02-09 | 1989-02-09 | CLOCKED POWER SUPPLY |
| DE3903763 | 1989-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0382307A2 true EP0382307A2 (en) | 1990-08-16 |
| EP0382307A3 EP0382307A3 (en) | 1990-11-14 |
Family
ID=6373669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19900200258 Withdrawn EP0382307A3 (en) | 1989-02-09 | 1990-02-05 | Switching power supply device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0382307A3 (en) |
| JP (1) | JPH02235118A (en) |
| DE (1) | DE3903763A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994001921A1 (en) * | 1992-07-14 | 1994-01-20 | Valor Electronics Inc. | Dc-to-dc converter |
| WO1995015609A1 (en) * | 1993-12-01 | 1995-06-08 | Melcher Ag | Dc/dc converter for low output voltages |
| WO2006087402A2 (en) * | 2005-02-15 | 2006-08-24 | Universidad De Sevilla | Method for the continuous regulation of voltage ratio in transformers |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2443763A1 (en) * | 1978-12-08 | 1980-07-04 | Philips Nv | CUT-OUT POWER SUPPLY WITH MULTIPLE OUTPUTS |
| DE3221839A1 (en) * | 1981-06-19 | 1983-03-17 | Hitachi Metals, Ltd., Tokyo | LOCK CONVERTER |
| DE3209975A1 (en) * | 1982-03-18 | 1983-09-29 | Nixdorf Computer Ag, 4790 Paderborn | Circuit arrangement for controlling the magnitude of a pulsating voltage which is to be emitted, especially in a DC converter |
| EP0255844A1 (en) * | 1986-08-08 | 1988-02-17 | International Business Machines Corporation | Power supplies with magnetic amplifier voltage regulation |
-
1989
- 1989-02-09 DE DE3903763A patent/DE3903763A1/en not_active Withdrawn
-
1990
- 1990-02-05 EP EP19900200258 patent/EP0382307A3/en not_active Withdrawn
- 1990-02-06 JP JP2025286A patent/JPH02235118A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2443763A1 (en) * | 1978-12-08 | 1980-07-04 | Philips Nv | CUT-OUT POWER SUPPLY WITH MULTIPLE OUTPUTS |
| DE3221839A1 (en) * | 1981-06-19 | 1983-03-17 | Hitachi Metals, Ltd., Tokyo | LOCK CONVERTER |
| DE3209975A1 (en) * | 1982-03-18 | 1983-09-29 | Nixdorf Computer Ag, 4790 Paderborn | Circuit arrangement for controlling the magnitude of a pulsating voltage which is to be emitted, especially in a DC converter |
| EP0255844A1 (en) * | 1986-08-08 | 1988-02-17 | International Business Machines Corporation | Power supplies with magnetic amplifier voltage regulation |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994001921A1 (en) * | 1992-07-14 | 1994-01-20 | Valor Electronics Inc. | Dc-to-dc converter |
| WO1995015609A1 (en) * | 1993-12-01 | 1995-06-08 | Melcher Ag | Dc/dc converter for low output voltages |
| US5673183A (en) * | 1993-12-01 | 1997-09-30 | Melcher, Ag | DC/DC converter for low output voltages |
| WO2006087402A2 (en) * | 2005-02-15 | 2006-08-24 | Universidad De Sevilla | Method for the continuous regulation of voltage ratio in transformers |
| WO2006087402A3 (en) * | 2005-02-15 | 2006-11-02 | Univ Sevilla | Method for the continuous regulation of voltage ratio in transformers |
| ES2277500A1 (en) * | 2005-02-15 | 2007-07-01 | Universidad De Sevilla | Method for the continuous regulation of voltage ratio in transformers |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0382307A3 (en) | 1990-11-14 |
| JPH02235118A (en) | 1990-09-18 |
| DE3903763A1 (en) | 1990-08-16 |
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