DE10211229B4 - Pulsed voltage transformer - Google Patents

Pulsed voltage transformer Download PDF

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Publication number
DE10211229B4
DE10211229B4 DE10211229A DE10211229A DE10211229B4 DE 10211229 B4 DE10211229 B4 DE 10211229B4 DE 10211229 A DE10211229 A DE 10211229A DE 10211229 A DE10211229 A DE 10211229A DE 10211229 B4 DE10211229 B4 DE 10211229B4
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voltage
oscillating circuit
supply
supply voltage
circuit
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Expired - Fee Related
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DE10211229A
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DE10211229A1 (en
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Michael Gude
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
    • H02M3/3376—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Getakteter Spannungswandler in dem zur Versorgung der Schwingschaltung [1] zumindest im Anlauffall der neutrale, nicht geschaltete Punkt [2] der primärseitigen Wicklung [3] von der Speisespannung getrennt wird, so dass der Eingangsstrom dann zum Aufbau einer Spannung genutzt wird, welche die Schwingschaltung speist.clocked Voltage converter in which to supply the oscillating circuit [1] at least in the event of a run-on, the neutral, non-switched point [2] the primary side Winding [3] is disconnected from the supply voltage, so that the input current is then used to build a voltage which feeds the oscillating circuit.

Figure 00000001
Figure 00000001

Description

Getaktete Spannungswandler werden heute in einer Vielzahl von Spannungswandlern und Netzteilen eingesetzt. Ihr größter Vorteil liegt dabei in der geringen Verlustleistung und dem damit möglichen platzsparenden Aufbau. Ferner kann durch Verwendung sehr kleiner Transformatoren und hoher Schaltfrequenzen eine weitere Verkleinerung der Bauform und Verringerung des Gewichtes gegenüber längsgeregelten herkömmlichen Spannungswandlern erreicht werden.clocked Voltage transformers are today in a variety of voltage transformers and power supplies used. Your biggest advantage is in the low power loss and thus possible space-saving design. Furthermore, by using very small transformers and high Switching frequencies further miniaturization of the design and reduction of weight linear regulated usual Voltage transformers can be achieved.

Ein besonderes Problem ist bei diesen Wandlern die Versorgung der Schwingschaltung, insbesondere im Fall des Anlaufs des Wandlers, also nach dem Einschalten der Versorgungsspannung. Dieses insbesondere bei solchen Wandlern bei denen die Versorgungsspannung viel höher ist als die Spannung, die üblicherweise für die Schwingschaltung benutzt wird. Dieses liegt darin begründet, dass übliche integrierte Halbleiterschaltungen nur Spannungen von wenigen Volt bis zu einigen zehn Volt verkraften können.One particular problem with these converters is the supply of the oscillating circuit, especially in the case of the start of the converter, so after switching the supply voltage. This particular in such converters where the supply voltage is much higher than the voltage that is usually for the Oscillating circuit is used. This is due to the fact that usual integrated Semiconductor circuits only voltages from a few volts to some can handle ten volts.

In den oben geschilderten Fällen hilft man sich nach dem Stand der Technik damit (s.a. 1), dass durch Aufladen einer R/C-Kombination und geringer Stromaufnahme der Schwingschaltung im inaktiven Zustand die Versorgungsspannung der Schwingschaltung soweit zur Verfügung gestellt wird, dass die Schwingschaltung sicher anschwingt. Danach versorgt man dann die Schwingschaltung aus einer Hilfswicklung des Transformators. Hierbei zeigt 1 einen üblichen Spannungswandler nach dem Stand der Technik. Zur Vereinfachung ist nur die Primärseite dargestellt. Hierbei ist auch zu beachten, dass der nach dem Anlaufen der Schaltung überflüssige Widerstand R unnötige Verlustleistung verbraucht.In the cases described above, it helps according to the prior art (sa 1 ) that by charging an R / C combination and low power consumption of the oscillating circuit in the inactive state, the supply voltage of the oscillating circuit is provided so far available that the oscillating circuit safely starts. Thereafter, the oscillating circuit is then supplied from an auxiliary winding of the transformer. This shows 1 a conventional voltage converter according to the prior art. For simplicity, only the primary page is shown. It should also be noted that the unnecessary after starting the circuit resistor R consumes unnecessary power loss.

Nach den Druckschriften DE 3721075 C1 , DE 10001394 A1 und JP 2000014148 A sind eine Vielzahl anderer Schaltungen bekannt, die durch die Verwendung zusätzlicher elektronischer Schalter eine Versorgungsspannung für die Schwingschaltung erzeugen. Diese haben alle gemeinsam, dass die Versorgungsspannung für die Schwingschaltung – zumindest im Anlauffall – nur bei zumindest einem geschlossenen Schalter erzeugt wird.After the pamphlets DE 3721075 C1 . DE 10001394 A1 and JP 2000014148 A a variety of other circuits are known which generate a supply voltage for the oscillating circuit by the use of additional electronic switches. These all have in common that the supply voltage for the oscillating circuit - at least during start-up - only at least one closed switch is generated.

Der vorliegenden Erfindung liegt nun die Aufgabe zu Grunde ohne die Verwendung einer zusätzlichen Wicklung und ohne einen Anlaufwiderstand R einen optimalen Spannungswandler zu konstruieren.Of the The present invention is based on the object without the Use of an additional Winding and without a starting resistor R an optimal voltage converter to construct.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass zur Versorgung der Schwingschaltung [1] zumindest im Anlauffall der neutrale, nicht geschaltete Punkt [2] der primärseitigen Wicklung [3] von der Speisespannung getrennt wird, so dass der Eingangsstrom dann zum Aufbau einer Spannung genutzt wird, welche die Schwingschaltung speist.This object is achieved according to the invention in that for supplying the oscillating circuit [ 1 ] at least in the case of an emergency, the neutral, non-switched point [ 2 ] of the primary winding [ 3 ] is disconnected from the supply voltage, so that the input current is then used to build up a voltage that feeds the oscillating circuit.

2 zeugt ein Ausführungsbeispiel der erfindungsgemäßen Schaltung. Deutlich ist zu sehen, dass weder ein Anlaufwiderstand benötigt wird noch eine Hilfswicklung auf dem Transformator erforderlich ist. Der Versorgungsstrom der Schaltung kann im besten Fall nur aus dem Ladestrom der Kondensatoren bestehen. 2 testifies an embodiment of the circuit according to the invention. It can clearly be seen that neither a starting resistor is needed nor an auxiliary winding on the transformer is required. The supply current of the circuit can at best consist only of the charging current of the capacitors.

Nach dem Anschwingen der Schwingschaltung kann nach Anspruch 2. die Schwingschaltung aus der Rückschlagspannung der primärseitigen Wicklung [3] versorgt werden und der neutrale Punkt [2] der primärseitigen Wicklung [3] wieder mit der Versorgungsspannung verbunden werden.After oscillation of the oscillating circuit can according to claim 2, the oscillating circuit from the setback voltage of the primary-side winding 3 ] and the neutral point [ 2 ] of the primary winding [ 3 ] be connected to the supply voltage again.

Diese Verbindung wird in der Beispielschaltung nach 2 durch den elektronischen Schalter [4] hergestellt. Hierdurch wird die Verlustleistung auf ein Minimum verringert.This connection will follow in the example circuit 2 through the electronic switch [ 4 ] produced. This reduces the power loss to a minimum.

Nach Anspruch 3. kann der Spannungswandler zusätzlich durch eine Schaltung ergänzt werden, so dass für die Detektion der Polarität der Eingangsspannung ein Optokoppler so angesteuert wird, dass der Versorgungsstrom des Optokopplers aus der Versorgungsspannung der Schwingschaltung entnommen wird.To Claim 3., the voltage converter in addition by a circuit be supplemented, so for the detection of the polarity the input voltage of an optocoupler is controlled so that the Supply current of the optocoupler from the supply voltage of Oscillator circuit is removed.

Da für die Ansteuerung des Optokopplers im wesentlichen der Strom durch die LED maßgebend ist, sinkt die Verlustleistung durch Vorwiderstand und LED proportional zur benutzten Versorgungsspannung. Da die Versorgungsspannung der Schwing schaltung im Regelfall deutlich unter der Versorgungsspannung der Gesamtschaltung liegt, kann durch die Benutzung der Betriebsspannung der Schwingschaltung auch zum Betrieb des Optokopplers die Verlustleistung reduziert werden.There for the Activation of the optocoupler essentially the current through the LED is authoritative, the power dissipation through series resistor and LED decreases proportionally to the used supply voltage. Since the supply voltage of Vibration circuit usually well below the supply voltage the overall circuit can, by the use of the operating voltage the oscillating circuit and the operation of the optocoupler, the power loss be reduced.

Claims (3)

Getakteter Spannungswandler in dem zur Versorgung der Schwingschaltung [1] zumindest im Anlauffall der neutrale, nicht geschaltete Punkt [2] der primärseitigen Wicklung [3] von der Speisespannung getrennt wird, so dass der Eingangsstrom dann zum Aufbau einer Spannung genutzt wird, welche die Schwingschaltung speist.Pulsed voltage converter in which to supply the oscillating circuit [ 1 ] at least in the case of an emergency, the neutral, non-switched point [ 2 ] of the primary winding [ 3 ] is disconnected from the supply voltage, so that the input current is then used to build up a voltage that feeds the oscillating circuit. Getakteter Spannungswandler nach Anspruch 1. dadurch gekennzeichnet, dass die Schwingschaltung nach dem Anschwingen aus der Rückschlagspannung der primärseitigen Wicklung [3] versorgt wird und der neutrale Punkt [2] der primärseitigen Wicklung [3] wieder mit der Versorgungsspannung verbunden wird.Pulsed voltage converter according to claim 1. characterized in that the oscillating circuit after the oscillation from the setback voltage of the primary-side winding 3 ] and the neutral point [ 2 ] of the primary winding [ 3 ] is reconnected to the supply voltage. Getakteter Spannungswandler nach Anspruch 1. dadurch gekennzeichnet, dass für die Detektion der Polarität der Eingangsspannung ein Optokoppler so angesteuert wird, dass der Versorgungsstrom des Optokopplers aus der Versorgungsspannung der Schwingschaltung entnommen wird.Pulsed voltage converter according to claim 1 by marked that for the detection of the polarity the input voltage of an optocoupler is controlled so that the Supply current of the optocoupler from the supply voltage of the oscillating circuit is removed.
DE10211229A 2002-03-13 2002-03-13 Pulsed voltage transformer Expired - Fee Related DE10211229B4 (en)

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DE10211229B4 true DE10211229B4 (en) 2005-04-21

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2104215B1 (en) 2008-03-17 2018-09-05 Power Systems Technologies GmbH Control circuit on the primary side of an electronic power converter having a transformer without auxiliary winding

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721075C1 (en) * 1987-06-26 1989-01-26 Trilux Lenze Gmbh & Co Kg DC power supply circuit
JPH05344724A (en) * 1992-06-11 1993-12-24 Matsushita Electric Ind Co Ltd Dc-dc converter
JP2000014148A (en) * 1998-06-23 2000-01-14 Nagano Japan Radio Co Switching power supply device
DE10001394A1 (en) * 2000-01-14 2001-07-26 Infineon Technologies Ag Circuit for applying clocked supply voltage to load requires no auxiliary winding, discrete components; very small power losses arise in applying supply voltage - has switch connected between load and control circuit's first voltage supply connection with control connection to which drive signal is applied

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721075C1 (en) * 1987-06-26 1989-01-26 Trilux Lenze Gmbh & Co Kg DC power supply circuit
JPH05344724A (en) * 1992-06-11 1993-12-24 Matsushita Electric Ind Co Ltd Dc-dc converter
JP2000014148A (en) * 1998-06-23 2000-01-14 Nagano Japan Radio Co Switching power supply device
DE10001394A1 (en) * 2000-01-14 2001-07-26 Infineon Technologies Ag Circuit for applying clocked supply voltage to load requires no auxiliary winding, discrete components; very small power losses arise in applying supply voltage - has switch connected between load and control circuit's first voltage supply connection with control connection to which drive signal is applied

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