DE20302275U1 - Electronic switch for control of load in direct current electrical network includes control circuit connected to load current transducer - Google Patents

Electronic switch for control of load in direct current electrical network includes control circuit connected to load current transducer

Info

Publication number
DE20302275U1
DE20302275U1 DE20302275U DE20302275U DE20302275U1 DE 20302275 U1 DE20302275 U1 DE 20302275U1 DE 20302275 U DE20302275 U DE 20302275U DE 20302275 U DE20302275 U DE 20302275U DE 20302275 U1 DE20302275 U1 DE 20302275U1
Authority
DE
Germany
Prior art keywords
load
electronic switch
connection
switch according
control device
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
DE20302275U
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.)
Ellenberger and Poensgen GmbH
Original Assignee
Ellenberger and Poensgen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ellenberger and Poensgen GmbH filed Critical Ellenberger and Poensgen GmbH
Priority to DE20302275U priority Critical patent/DE20302275U1/en
Publication of DE20302275U1 publication Critical patent/DE20302275U1/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
    • H03K17/06—Modifications for ensuring a fully conducting state
    • H03K17/063—Modifications for ensuring a fully conducting state in field-effect transistor switches
    • 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
    • H03K17/0822—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in field-effect transistor switches
    • 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
    • H03K2017/0806—Modifications for protecting switching circuit against overcurrent or overvoltage against excessive temperature

Landscapes

  • Electronic Switches (AREA)

Abstract

The battery positive terminal (5) is connected to the load transistor (2), a current sensor (4), a load input switch (6a) and the load (L), which is connected to earth (GND) via a load output switch (6b). The load current (IL) flows from the drain (D) to the source (S) of the load transistor. A control current (SR) passes from a control circuit (8) with a transistor to the gate (G) of the load transistor. A constant current circuit (9) is connected to the control circuit. The ON/OFF switching terminal (11) is connected to a control logic circuit (10).

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (10)

1. Elektronischer Schalter (1) zum Schalten einer Last (L) in einem Gleichspan­ nungsnetz, mit einem zwischen einem Betriebsspannungsanschluss (5) und einem Lastanschluss (6a) verlaufenden Strompfad (3), in den ein Lei­ stungstransistor (2) und ein Stromsensor (4) geschaltet sind, sowie mit einer Regeleinrichtung (8), der zur strombegrenzenden Ansteuerung des Lei­ stungstransistors (2) ein vom Stromsensor (4) erfasster Messwert (IM) zuge­ führt ist, dadurch gekennzeichnet, dass der vom Stromsensor (4) erfasste Messwert (IM) einem ersten Kompara­ toreingang (E1) und ein vorgebbarer Referenzwert (IR) einem zweiten Kompa­ ratoreingang (E2) der Regeleinrichtung (8) zugeführt ist,
  • - wobei bei Vorliegen eines Einschaltsignals (EIN, SE) und bei einem den Referenzwert (IR) unterschreitenden Messwert (IM) die Regeleinrichtung (8) den Leistungstransistor (2) aufsteuert, und
  • - wobei bei einem den Referenzwert (IR) überschreitenden Messwert (IM) die Regeleinrichtung (8) den Leistungstransistor (2) zusteuert und den über diesen fließende Strom (IL) auf den Referenzwert (IR) begrenzt.
1. Electronic switch ( 1 ) for switching a load (L) in a DC voltage network, with a current path ( 3 ) between an operating voltage connection ( 5 ) and a load connection ( 6 a), into which a power transistor ( 2 ) and one Current sensor ( 4 ) are connected, and with a control device ( 8 ), which leads to the current-limiting control of the power transistor ( 2 ), a measured value (I M ) detected by the current sensor ( 4 ), characterized in that the current sensor ( 4 ) the measured value (I M ) is fed to a first comparator input (E 1 ) and a predefinable reference value (I R ) is fed to a second comparator input (E 2 ) of the control device ( 8 ),
  • - The control device ( 8 ) turns on the power transistor ( 2 ) in the presence of a switch-on signal (ON, S E ) and a measured value (I M ) falling below the reference value (I R ), and
  • - With a measured value (I R ) exceeding the reference value (I M ), the control device ( 8 ) controls the power transistor ( 2 ) and limits the current flowing through it (I L ) to the reference value (I R ).
2. Elektronischer Schalter nach Anspruch 1, dadurch gekennzeichnet, dass die Regeleinrichtung (8) zur Spannungsversorgung zwischen eine mit dem Betriebsspannungsanschluss (5) verbundene Ladungspumpe (13) und den Lastanschluss (6a) geschaltet ist.2. Electronic switch according to claim 1, characterized in that the control device ( 8 ) for the voltage supply is connected between a charge pump ( 13 ) connected to the operating voltage connection ( 5 ) and the load connection ( 6 a). 3. Elektronischer Schalter nach Anspruch 1 oder 2, gekennzeichnet durch eine mit einem Ansteueranschluss (11) verbundene Steuerlogik (10), über die der Regeleinrichtung (8) das Einschaltsignal (EIN, SE) oder ein Ausschaltsi­ gnal (AUS, SA) zugeführt ist.3. Electronic switch according to claim 1 or 2, characterized by a control logic ( 10 ) connected to a control connection ( 11 ), via which the control device ( 8 ) the switch-on signal (ON, S E ) or a switch-off signal (OFF, S A ) is fed. 4. Elektronischer Schalter nach einem der Ansprüche 1 bis 3, gekennzeichnet durch einen die Temperatur des Leistungstransistors (2) erfassenden Temperatur­ sensor (14), der bei Überschreiten eines Temperaturschwellwertes der Rege­ leinrichtung (8) ein Steuersignal (ST) zum Ausschalten des Leistungstransi­ stors (2) zuführt.4. Electronic switch according to one of claims 1 to 3, characterized by a temperature sensor of the power transistor ( 2 ) detecting the temperature sensor ( 14 ) which, when a temperature threshold of the control device ( 8 ), a control signal (S T ) for switching off the power transistor feeds ( 2 ). 5. Elektronischer Schalter nach Anspruch 4, dadurch gekennzeichnet, dass der Temperatursensor (14) über die Steuerlogik (10) mit der Regelein­ richtung (8) verbunden ist.5. Electronic switch according to claim 4, characterized in that the temperature sensor ( 14 ) via the control logic ( 10 ) with the Regelein direction ( 8 ) is connected. 6. Elektronischer Schalter nach einem der Ansprüche 1 bis 5, gekennzeichnet durch eine als Schutzelement gegen Überlast, Kurzschluss und/oder Stromspitzen dienende Konstantstromeinstellung (9) zur Erzeugung des Referenzwertes (IR).6. Electronic switch according to one of claims 1 to 5, characterized by a constant current setting ( 9 ) serving as a protective element against overload, short circuit and / or current peaks for generating the reference value (I R ). 7. Elektronischer Schalter nach Anspruch 6, dadurch gekennzeichnet, dass die Konstantstromeinstellung (9) einen einem ersten Widerstand (R4) zuschaltbaren zweiten Widerstand (R3) zur Vorgabe des Referenzwertes (IR) umfasst.7. Electronic switch according to claim 6, characterized in that the constant current setting ( 9 ) comprises a second resistor (R4) which can be connected to a first resistor (R3) for specifying the reference value (I R ). 8. Elektronischer Schalter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Regeleinrichtung (8) einen Operationsverstärker (OP) mit einem mit dem Betriebsspannungsanschluss (5) verbundenen ersten Spannungsversor­ gungsanschluss (U+) und mit einem mit dem Strompfad (3) verbundenen zweiten Spannungsversorgungsanschluss (U-) umfasst, wobei zwischen die Spannungsversorgungsanschlüsse (U+, U-) ein Begrenzungselement (Z) zur Einstellung der Versorgungsspannung für den Operationsverstärker (OP) ge­ schaltet ist.8. Electronic switch according to one of claims 1 to 7, characterized in that the control device ( 8 ) an operational amplifier (OP) with a with the operating voltage connection ( 5 ) connected to the first voltage supply connection (U + ) and with one with the current path ( 3rd ) connected second voltage supply connection (U - ), a limiting element (Z) for setting the supply voltage for the operational amplifier (OP) being connected between the voltage supply connections (U + , U - ). 9. Elektronischer Schalter nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Leistungstransistor (2) ein N-Kanal-MOS-Transistor ist.9. Electronic switch according to one of claims 1 to 8, characterized in that the power transistor ( 2 ) is an N-channel MOS transistor. 10. Elektronischer Schalter nach Anspruch 9, dadurch gekennzeichnet, dass der N-Kanal-MOS-Transistor (2) drain-seitig am Betriebsspannungsan­ schluss (5) und source-seitig über den Stromsensor (4) am Pluspol (+L) des Lastanschlusses (6a, 6b) liegt, wobei die zwischen diesem und dem Minuspol (-L) des Lastanschlusses (6a, 6b) anschließbare Last (L) gegen Bezugspoten­ tial (GND) liegt.10. Electronic switch according to claim 9, characterized in that the N-channel MOS transistor ( 2 ) on the drain side at the operating voltage connection ( 5 ) and on the source side via the current sensor ( 4 ) at the positive pole (+ L) of the load connection ( 6 a, 6 b), the load between this and the negative pole (-L) of the load connection ( 6 a, 6 b) connectable load (L) is against reference potential (GND).
DE20302275U 2002-02-14 2003-02-12 Electronic switch for control of load in direct current electrical network includes control circuit connected to load current transducer Expired - Lifetime DE20302275U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20302275U DE20302275U1 (en) 2002-02-14 2003-02-12 Electronic switch for control of load in direct current electrical network includes control circuit connected to load current transducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10206003 2002-02-14
DE20302275U DE20302275U1 (en) 2002-02-14 2003-02-12 Electronic switch for control of load in direct current electrical network includes control circuit connected to load current transducer

Publications (1)

Publication Number Publication Date
DE20302275U1 true DE20302275U1 (en) 2003-06-05

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ID=7713803

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20302275U Expired - Lifetime DE20302275U1 (en) 2002-02-14 2003-02-12 Electronic switch for control of load in direct current electrical network includes control circuit connected to load current transducer

Country Status (1)

Country Link
DE (1) DE20302275U1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009005420U1 (en) 2009-03-11 2009-06-18 Ellenberger & Poensgen Gmbh Electronic circuit breaker
DE102005014167B4 (en) * 2005-03-29 2010-06-17 Hkr Climatec Gmbh Driver protection circuit
DE102009017322A1 (en) * 2009-04-16 2010-10-28 Hengst Gmbh & Co. Kg Electrical circuit of a supplementary fuel heater
DE202014007096U1 (en) 2014-09-05 2015-12-09 Ellenberger & Poensgen Gmbh Electronic switch
DE102014012828A1 (en) 2014-08-28 2016-03-03 Ellenberger & Poensgen Gmbh Electronic circuit breaker
DE202016102848U1 (en) 2015-06-16 2016-08-10 Ellenberger & Poensgen Gmbh Electronic circuit breaker
DE202015009288U1 (en) 2015-10-08 2017-01-23 Ellenberger & Poensgen Gmbh Electronic circuit breaker
DE102017202103B3 (en) 2017-02-09 2018-03-01 Ellenberger & Poensgen Gmbh Method of operating an electronic circuit breaker and electronic circuit breaker
EP3561981A1 (en) 2018-04-27 2019-10-30 Siemens Aktiengesellschaft Method for reduction of a temperature rise in a controllable switching element
WO2020099575A1 (en) 2018-11-14 2020-05-22 Siemens Aktiengesellschaft Method for switching a load
DE102023104899A1 (en) 2022-11-30 2024-06-06 HELLA GmbH & Co. KGaA Electronic overcurrent protection device, circuit arrangement, method for operating a circuit arrangement and motor vehicle control unit

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005014167B4 (en) * 2005-03-29 2010-06-17 Hkr Climatec Gmbh Driver protection circuit
DE202009005420U1 (en) 2009-03-11 2009-06-18 Ellenberger & Poensgen Gmbh Electronic circuit breaker
DE102009017322A1 (en) * 2009-04-16 2010-10-28 Hengst Gmbh & Co. Kg Electrical circuit of a supplementary fuel heater
DE102009017322B4 (en) 2009-04-16 2023-05-25 Hengst Se Electrical circuit of an auxiliary fuel heater
DE102014012828A1 (en) 2014-08-28 2016-03-03 Ellenberger & Poensgen Gmbh Electronic circuit breaker
US10389110B2 (en) 2014-08-28 2019-08-20 Ellenberger & Poensgen Gmbh Electronic circuit breaker
DE202014007096U1 (en) 2014-09-05 2015-12-09 Ellenberger & Poensgen Gmbh Electronic switch
WO2016034384A1 (en) * 2014-09-05 2016-03-10 Ellenberger & Poensgen Gmbh Electronic switch
US9985544B2 (en) 2014-09-05 2018-05-29 Ellenberger & Poensgen Gmbh Electronic switch
DE202016102848U1 (en) 2015-06-16 2016-08-10 Ellenberger & Poensgen Gmbh Electronic circuit breaker
WO2016202902A1 (en) 2015-06-16 2016-12-22 Ellenberger & Poensgen Gmbh Electronic circuit breaker
WO2017059983A1 (en) 2015-10-08 2017-04-13 Ellenberger & Poensgen Gmbh Electronic circuit breaker
DE202015009288U1 (en) 2015-10-08 2017-01-23 Ellenberger & Poensgen Gmbh Electronic circuit breaker
US10720768B2 (en) 2015-10-08 2020-07-21 Ellenberger & Poensgen Gmbh Electronic circuit breaker
DE102017202103B3 (en) 2017-02-09 2018-03-01 Ellenberger & Poensgen Gmbh Method of operating an electronic circuit breaker and electronic circuit breaker
US10777997B2 (en) 2017-02-09 2020-09-15 Ellenberger & Poensgen Gmbh Method for operating an electronic circuit breaker, and electronic circuit breaker
WO2019206564A1 (en) 2018-04-27 2019-10-31 Siemens Aktiengesellschaft Method for reducing a thermal load on a controllable switching element
WO2019206964A1 (en) 2018-04-27 2019-10-31 Siemens Aktiengesellschaft Method for reducing a temperature increase in a controllable switching element
US11349472B2 (en) 2018-04-27 2022-05-31 Siemens Aktiengesellschaft Method for reducing a thermal load on a controllable switching element
EP3561981A1 (en) 2018-04-27 2019-10-30 Siemens Aktiengesellschaft Method for reduction of a temperature rise in a controllable switching element
WO2020099575A1 (en) 2018-11-14 2020-05-22 Siemens Aktiengesellschaft Method for switching a load
DE102023104899A1 (en) 2022-11-30 2024-06-06 HELLA GmbH & Co. KGaA Electronic overcurrent protection device, circuit arrangement, method for operating a circuit arrangement and motor vehicle control unit

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20030710

R150 Term of protection extended to 6 years

Effective date: 20060530

R151 Term of protection extended to 8 years

Effective date: 20090313

R152 Term of protection extended to 10 years

Effective date: 20110307

R071 Expiry of right
R071 Expiry of right