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DE29617892U1 - Isolating control circuit for an electronic switch - Google Patents

Isolating control circuit for an electronic switch

Info

Publication number
DE29617892U1
DE29617892U1 DE29617892U DE29617892U DE29617892U1 DE 29617892 U1 DE29617892 U1 DE 29617892U1 DE 29617892 U DE29617892 U DE 29617892U DE 29617892 U DE29617892 U DE 29617892U DE 29617892 U1 DE29617892 U1 DE 29617892U1
Authority
DE
Germany
Prior art keywords
control circuit
switch
circuit
primary
fault
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.)
Expired - Lifetime
Application number
DE29617892U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE29617892U priority Critical patent/DE29617892U1/en
Publication of DE29617892U1 publication Critical patent/DE29617892U1/en
Priority to DE19738391A priority patent/DE19738391A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/18—Modifications for indicating state of switch
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
    • H03K17/0828—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in composite switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/605—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors with galvanic isolation between the control circuit and the output circuit
    • H03K17/61—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
    • H01F19/08—Transformers having magnetic bias, e.g. for handling pulses
    • H01F2019/085—Transformer for galvanic isolation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Keying Circuit Devices (AREA)

Description

Die Erfindung beschreibt eine potentiaitrennende Ansteuerschaltung mit einem Ansteuertransformator für einen elektronischen Schalter der Leistungselektronik, wobei derselbe Ansteuertransformator nicht nur für die Übertragung der Ansteuersignale von der Treiberschaltung zum Leistungsschalter hin verwendet wird, sondern auch zur Übertragung einer Störungsinformation zurück vom Leistungsschalter zur ansteuernden Treiberschaltung. Durch diese Anordnung werden die üblicherweise dafür verwendeten Optokoppler eingespart.The invention describes a potentiometrically isolating control circuit with a control transformer for an electronic switch of the power electronics, whereby the same control transformer is used not only for transmitting the control signals from the driver circuit to the power switch, but also for transmitting fault information back from the power switch to the controlling driver circuit. This arrangement saves the optocouplers usually used for this purpose.

Aufgabe der Erfindung:Object of the invention:

Einsparung eines zweiten potentialtrennenden Übertragungskanales für die Störungsmeldungen aus der schalterseitigen Treiberschaltung zurück zur primärseitigen Treiberschaltung.Saving a second potential-isolating transmission channel for the fault messages from the switch-side driver circuit back to the primary-side driver circuit.

Claims (4)

9*'Oktober 1996 Wolfgang Schuster Am Viehmarkt 1 88410 Bad Wurzach Ansprüche9*'October 1996 Wolfgang Schuster Am Viehmarkt 1 88410 Bad Wurzach Claims 1. Potentialtrennende Ansteuerschaltung für einen elektronischen Schalter (3) der Leistungselektronik mit einer primärseitigen Treiberschaltung (1), mit einem Ansteuertransformator (4), mit einer sekundärseitigen Treiberschaltung (2) enthaltend eine Detektorschaltung (5) für Störungen des normalen Schalterbetriebes,
dadurch gekennzeichnet, 1. Potential-isolating control circuit for an electronic switch (3) of the power electronics with a primary-side driver circuit (1), with a control transformer (4), with a secondary-side driver circuit (2) containing a detector circuit (5) for disturbances of the normal switch operation,
characterized, daß direkt oder mittelbar (z.B. in Reihenschaltung mit Dioden oder Widerständen) an den Anschlüssen der Sekundärwicklung des Ansteuertransformator (4) ein elektronischer Hilfsschalter (6) angeschlossen ist, daß der Ausgang der Detektorschaltung (5) diesen elektronischen Hilfsschalter (6) derart ansteuert, daß im Störungsfall auf der Sekundärseite des Ansteuertransformators (4) ein überdurchschnittlich hoher Sekundärstrom I2 erzeugt wird, daß auf der Primärseite der Ansteuerschaltung eine Auswerteschaltung (7) vorhanden ist, welche den im Störungsfall erhöhten Primärstrom I1 vom normalen Primärstrom I1 unterscheiden kann, und welche die damit erhaltene Störungsinformation der primärseitigen Treiberschaltung (1) zur weiteren Fehlerbearbeitung zuführt (Fig. 1).that an electronic auxiliary switch (6) is connected directly or indirectly (e.g. in series with diodes or resistors) to the terminals of the secondary winding of the control transformer (4), that the output of the detector circuit (5) controls this electronic auxiliary switch (6) in such a way that in the event of a fault an above-average secondary current I 2 is generated on the secondary side of the control transformer (4), that an evaluation circuit (7) is present on the primary side of the control circuit which can distinguish the increased primary current I 1 from the normal primary current I 1 in the event of a fault, and which feeds the fault information obtained thereby to the primary-side driver circuit (1) for further fault processing (Fig. 1). 2. Potentialtrennende Ansteuerschaltung nach Anspruch 1, dadurch gekennzeichnet,2. Potential-isolating control circuit according to claim 1, characterized in that daß der Detektor (5) als Störungen des normalen Schalterbetnebes mit bekannten Mitteln erkennt z.B.: unzureichende Versorgungsspannung der sekundärseitigen Treiberschaltung (2), EntSättigung des elektronischen Schalters (3) durch Überlast, Verletzung von Zeitlimits, Übertemperatur oder Auslösen von schalterseitigen Sicherungen.that the detector (5) detects disturbances in normal switch operation using known means, e.g.: insufficient supply voltage of the secondary-side driver circuit (2), desaturation of the electronic switch (3) due to overload, violation of time limits, overtemperature or triggering of switch-side fuses. 3. Potentialtrennende Ansteuerschaltung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet,3. Potential-isolating control circuit according to one of claims 1 or 2, characterized in that daß der Hiifsschaiter (6) durch einen Thyristor, MOSFET, bipolaren Transistor bzw. durch ein anderes aktuelles Halbleiterbauelement realisiert ist.that the auxiliary switch (6) is implemented by a thyristor, MOSFET, bipolar transistor or by another current semiconductor component. 4. Potentialtrennende Ansteuerschaltung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,4. Potential-isolating control circuit according to one of claims 1 to 3, characterized in that daß in der Auswerteschaltung (7) der Primärstrom I1 des Ansteuertransformators (4) über einen Meßwiderstand (8) geleitet wird, wobei mit einem Spannungskomparator (9) die über dem Meßwiderstand (8) anliegende Spannung mit einer Schwellspannung verglichen wird, wodurch der normale Primärstrom I1 von dem im Störungsfall überhöhten Primärstrom I1 unterscheidbar ist (Fig. 2).that in the evaluation circuit (7) the primary current I 1 of the control transformer (4) is passed through a measuring resistor (8), wherein the voltage across the measuring resistor (8) is compared with a threshold voltage by means of a voltage comparator (9), whereby the normal primary current I 1 can be distinguished from the primary current I 1 which is excessive in the event of a fault (Fig. 2).
DE29617892U 1996-10-15 1996-10-15 Isolating control circuit for an electronic switch Expired - Lifetime DE29617892U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE29617892U DE29617892U1 (en) 1996-10-15 1996-10-15 Isolating control circuit for an electronic switch
DE19738391A DE19738391A1 (en) 1996-10-15 1997-09-03 Galvanic isolation transformer circuit for power electronic switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29617892U DE29617892U1 (en) 1996-10-15 1996-10-15 Isolating control circuit for an electronic switch

Publications (1)

Publication Number Publication Date
DE29617892U1 true DE29617892U1 (en) 1996-11-28

Family

ID=8030592

Family Applications (2)

Application Number Title Priority Date Filing Date
DE29617892U Expired - Lifetime DE29617892U1 (en) 1996-10-15 1996-10-15 Isolating control circuit for an electronic switch
DE19738391A Withdrawn DE19738391A1 (en) 1996-10-15 1997-09-03 Galvanic isolation transformer circuit for power electronic switch

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE19738391A Withdrawn DE19738391A1 (en) 1996-10-15 1997-09-03 Galvanic isolation transformer circuit for power electronic switch

Country Status (1)

Country Link
DE (2) DE29617892U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004084409A1 (en) * 2003-03-21 2004-09-30 Conti Temic Microelectronic Gmbh Method for controlling and monitoring the operation of a power semiconductor switch, and device for carrying out the method
EP2530817A1 (en) * 2011-05-30 2012-12-05 Siemens Aktiengesellschaft Control device for an inverter with different reference potential

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354067B4 (en) * 2003-11-19 2006-03-23 Semikron Elektronik Gmbh & Co. Kg Circuit arrangement and method for isolated transmission of a switching information
JP2006074372A (en) * 2004-09-01 2006-03-16 Toshiba Corp Digital signal transmitter
CN100550633C (en) * 2005-07-27 2009-10-14 展嘉科技股份有限公司 Electromagnetic coupling digital output circuit with output feedback
DE102012207773A1 (en) * 2012-05-10 2013-11-14 Robert Bosch Gmbh beam detector
DE102023200512A1 (en) * 2023-01-24 2024-07-25 Robert Bosch Gesellschaft mit beschränkter Haftung Control device for activating and deactivating a Y capacitor, power converter and electric drive system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004084409A1 (en) * 2003-03-21 2004-09-30 Conti Temic Microelectronic Gmbh Method for controlling and monitoring the operation of a power semiconductor switch, and device for carrying out the method
EP2530817A1 (en) * 2011-05-30 2012-12-05 Siemens Aktiengesellschaft Control device for an inverter with different reference potential

Also Published As

Publication number Publication date
DE19738391A1 (en) 1998-04-23

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19970116

R156 Lapse of ip right after 3 years

Effective date: 20000801