EP0497106A2 - Réalisation de circuit pour régulation de tension et de courant - Google Patents

Réalisation de circuit pour régulation de tension et de courant Download PDF

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Publication number
EP0497106A2
EP0497106A2 EP92100310A EP92100310A EP0497106A2 EP 0497106 A2 EP0497106 A2 EP 0497106A2 EP 92100310 A EP92100310 A EP 92100310A EP 92100310 A EP92100310 A EP 92100310A EP 0497106 A2 EP0497106 A2 EP 0497106A2
Authority
EP
European Patent Office
Prior art keywords
voltage
circuit arrangement
control
control transistor
current
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.)
Withdrawn
Application number
EP92100310A
Other languages
German (de)
English (en)
Other versions
EP0497106A3 (en
Inventor
Wolfram Dipl.-Ing. Rieber
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.)
Bosch Telecom GmbH
Bosch Telecom Oeffentliche Vermittlungstechnik GmbH
Original Assignee
Bosch Telecom GmbH
Bosch Telecom Oeffentliche Vermittlungstechnik 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 Bosch Telecom GmbH, Bosch Telecom Oeffentliche Vermittlungstechnik GmbH filed Critical Bosch Telecom GmbH
Publication of EP0497106A2 publication Critical patent/EP0497106A2/fr
Publication of EP0497106A3 publication Critical patent/EP0497106A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector

Definitions

  • the invention relates to a circuit arrangement for voltage and current control according to the preamble of claim 1.
  • the object of the invention is to provide a circuit arrangement for voltage and current control, which has a minimal internal current requirement and also has a very low minimum voltage drop between the input and output.
  • a control transistor RT is inserted into the output branch of the circuit arrangement and is used both for current limitation and for stabilizing the output voltage Ua.
  • This control transistor RT is a field effect transistor, which is operated as a controllable resistor. In extreme cases, it can be controlled so that it switches through with very low impedance.
  • the control current for regulating the output voltage Ua is supplied by a differential amplifier DF1, which compares a reference voltage Uref3 derived from the output voltage Ua with a predetermined reference voltage Uref1.
  • a voltage divider consisting of resistors R8 and R9 is used to generate the reference voltage Uref3, which is dependent on the output voltage Ua.
  • the another fixed reference voltage Uref1 drops across a Zener diode Z2 and is stabilized by a capacitor C2.
  • the output of the differential amplifier DV1 is connected via a resistor R5 to a further resistor R6, across which a control voltage for the control transistor RT drops.
  • a further differential amplifier DV2 is provided, which, when activated, derives the control current for the control transistor RT, so that it can become high-resistance. This happens when a potential that is greater than a predetermined reference voltage Uref2 arises at a measuring resistor Rm. The differential amplifier DV2 then switches its output to a low potential, so that control current RT is withdrawn from the control transistor RT via a resistor R4 and a diode D.
  • the reference voltage Uref2 required for this function is formed by a voltage divider, which consists of the resistors R1 and R2. This voltage divider is connected to the supply voltage UV of the differential amplifier DV2. This supply voltage UV is generated by a Zener diode Z1 and is stabilized by a capacitor C1.
  • the input circuit of the circuit arrangement there is a circuit which consists of two Zener diodes Z1, Z2 and a resistor R3 and is fed by the input voltage Ue.
  • This input circuit serves to supply the supply voltage UV for the differential amplifier DV2, and the two reference voltages Uref1 and Uref2 are generated.
  • a single circuit is provided for this.
  • a substantial reduction in the power requirement of this circuit arrangement is thus achieved. This means that a high degree of efficiency is achieved in the power supply of electronic assemblies, which reduces the heat loss.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
EP19920100310 1991-01-26 1992-01-10 Circuit arrangement for voltage and current regulation Withdrawn EP0497106A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914102325 DE4102325A1 (de) 1991-01-26 1991-01-26 Schaltungsanordnung fuer spannungs- und stromregelung
DE4102325 1991-01-26

Publications (2)

Publication Number Publication Date
EP0497106A2 true EP0497106A2 (fr) 1992-08-05
EP0497106A3 EP0497106A3 (en) 1993-03-31

Family

ID=6423778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920100310 Withdrawn EP0497106A3 (en) 1991-01-26 1992-01-10 Circuit arrangement for voltage and current regulation

Country Status (2)

Country Link
EP (1) EP0497106A3 (fr)
DE (1) DE4102325A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012916A1 (fr) * 1993-10-30 1995-05-11 Robert Bosch Gmbh Installation d'alimentation a distance
FR2738086A1 (fr) * 1995-08-23 1997-02-28 Aeg Schneider Automation Circuit electronique de protection notamment pour alimentations electriques et automates programmables
EP0836130A3 (fr) * 1996-10-08 1999-03-10 Sharp Kabushiki Kaisha Circuit d'attaque de sortie pour utilisation dans un circuit d'alimentation de tension continue stabilisée
FR2830091A1 (fr) * 2001-09-25 2003-03-28 St Microelectronics Sa Regulateur de tension incorporant une resistance de stabilisation et un circuit de limitation du courant de sortie

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9405309B2 (en) 2014-11-29 2016-08-02 Infineon Technologies Ag Dual mode low-dropout linear regulator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4346342A (en) * 1981-06-09 1982-08-24 Rockwell International Corporation Current limiting voltage regulator
US4536699A (en) * 1984-01-16 1985-08-20 Gould, Inc. Field effect regulator with stable feedback loop
DE3405847C1 (de) * 1984-02-17 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Serienregler mit einem MOSFET-Leistungstransistor
DE3932776A1 (de) * 1989-09-30 1991-04-11 Philips Patentverwaltung Stromversorgungseinrichtung mit spannungsregelung und strombegrenzung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012916A1 (fr) * 1993-10-30 1995-05-11 Robert Bosch Gmbh Installation d'alimentation a distance
US6172491B1 (en) 1993-10-30 2001-01-09 Robert Bosch Gmbh Remote feeding device
FR2738086A1 (fr) * 1995-08-23 1997-02-28 Aeg Schneider Automation Circuit electronique de protection notamment pour alimentations electriques et automates programmables
EP0836130A3 (fr) * 1996-10-08 1999-03-10 Sharp Kabushiki Kaisha Circuit d'attaque de sortie pour utilisation dans un circuit d'alimentation de tension continue stabilisée
CN1097214C (zh) * 1996-10-08 2002-12-25 夏普株式会社 直流稳压电源电路的输出驱动电路
FR2830091A1 (fr) * 2001-09-25 2003-03-28 St Microelectronics Sa Regulateur de tension incorporant une resistance de stabilisation et un circuit de limitation du courant de sortie

Also Published As

Publication number Publication date
DE4102325A1 (de) 1992-07-30
EP0497106A3 (en) 1993-03-31

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