EP0943974B1 - Circuit de régulation de tension - Google Patents

Circuit de régulation de tension Download PDF

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Publication number
EP0943974B1
EP0943974B1 EP98105108A EP98105108A EP0943974B1 EP 0943974 B1 EP0943974 B1 EP 0943974B1 EP 98105108 A EP98105108 A EP 98105108A EP 98105108 A EP98105108 A EP 98105108A EP 0943974 B1 EP0943974 B1 EP 0943974B1
Authority
EP
European Patent Office
Prior art keywords
voltage
transistor
gate terminal
regulator
terminal
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
EP98105108A
Other languages
German (de)
English (en)
Other versions
EP0943974A1 (fr
Inventor
Jürgen Meier
Hans-Jörg Florenz
Armin Wernet
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.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
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 Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Priority to DE59813694T priority Critical patent/DE59813694D1/de
Priority to EP98105108A priority patent/EP0943974B1/fr
Priority to CA002264437A priority patent/CA2264437C/fr
Priority to US09/262,434 priority patent/US6094040A/en
Priority to HU9900687A priority patent/HU225080B1/hu
Publication of EP0943974A1 publication Critical patent/EP0943974A1/fr
Application granted granted Critical
Publication of EP0943974B1 publication Critical patent/EP0943974B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G05F1/575—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 characterised by the feedback circuit

Definitions

  • the invention relates to a voltage regulation circuit according to the preamble of claim 1.
  • Such a voltage regulation circuit is known from the article "linear regulator” in Radio Television Electronics, Vol. 45, No. 12, December 1996, page 70, XP 000682249. There, a linear regulator is disclosed which is suitable for input voltages of 3.3 volts and output voltages of 2.9 volts and load currents of max. 2 amps is measured.
  • This voltage regulation circuit contains in the longitudinal branch before the actual series regulator a transistor circuit which acts as a switch and interrupts the current flowing to the series regulator current as soon as the input voltage exceeds a predetermined value. Turning off the power can result in high current and voltage spikes in the circuit which result in the need to use components in the circuit that can withstand these high current and voltage spikes
  • the invention has for its object to provide a voltage control circuit of the type described, in which the components, in particular the components used on the output side no high demands in terms of current and withstand voltage must be made and is still suitable for input voltages of different heights.
  • the voltage regulation circuit according to the invention by the features of the characterizing part of claim 1.
  • the field effect transistor of the series regulator is controlled by a voltage at its control terminal to achieve the desired control function, with the result that hard switching operations of the current flowing through the transistor can be avoided.
  • the field effect transistor behaves like an element with controllable impedance, which can be switched between the low-resistance state and the high-resistance state with the aid of the control voltages from the threshold value circuits, so that steep switching edges and thus high current and voltage peaks are avoided.
  • the voltage regulation circuit shown in FIG. 1 serves to generate a regulated DC voltage at the output terminals 14, 16 from an input voltage which is applied between the input terminals 10, 12.
  • the input voltage may be a DC voltage or an AC voltage.
  • the circuit should be designed so that the input voltage is a DC voltage between 20V and 55V or an AC voltage between 20V and 253V.
  • the constant output DC voltage should be 11V. In the event that the input voltage is an AC voltage, it is first rectified by a bridge rectifier 18.
  • the core of the control circuit is a conventional series regulator of a transistor 20, here a field effect transistor, a Zener diode 22 and a resistor 24.
  • a series regulator generates known at its output a constant DC output voltage, except for the voltage drop across the transistor 20 of the Zener voltage of the Zener diode 22nd equivalent.
  • the input voltage of this series regulator must always be greater than the desired regulated DC output voltage.
  • the first threshold circuit consists of a voltage divider with the resistors 26 and 28, a field effect transistor 30 and a Zener diode 32.
  • the control terminal 21 of the field effect transistor 30 is connected to the connection point 34 of the two resistors 26 and 28, its drain is connected to the control terminal 21st the field effect transistor 20 is connected, and its source terminal is connected to the cathode of the Zener diode 32, whose anode is grounded.
  • another threshold switch is included, which consists of the series circuit of a resistor 36, a Zener diode 38 and another resistor 40 and an NPN transistor 42.
  • the series connection of the resistor 36, the Zener diode 38 and the resistor 40 is connected between the output terminal 16 and ground.
  • the collector of the transistor 42 is connected to the control terminal 21 of the field effect transistor 20, while its emitter is grounded.
  • the base terminal of the transistor 42 is connected to the connection point between the anode of the zener diode 38 and the resistor 40.
  • Between the transistor 20 and the output terminal 16 is another resistor 44. Further, there is a charging capacitor 46 between the output terminals 14 and 16.
  • the effect of the above-mentioned first threshold switch starts when a predetermined value of the rectified AC voltage is reached.
  • the field effect transistor 30 is in the conductive state, so that the voltage at the control terminal 21 of the transistor 20 decreases until this transistor transitions to the locked state.
  • the circuit should be designed so that it outputs the desired regulated DC voltage of 11V even with input DC voltages up to 55V at the output.
  • the first threshold switch may, of course, not initiate the transition of the transistor 20 in the locked state until the output voltage of the rectifier 18 exceeds the voltage value 55V. Earlier insertion of the first threshold switch would reduce the desired range of DC input voltage.
  • the current flowing through the transistor 20 charges the capacitor 46 via the resistor 44.
  • the desired output voltage value which can be determined by the dimensioning of the Zener diode 38 and the resistors 36 and 40, results in the node 48, ie at the base terminal of the transistor 42, a voltage value, the put this transistor 42 in the conductive state.
  • the threshold switches each acting on the control terminal 21 of the transistor 20, will only be applied when the voltage regulation circuit is powered by an AC voltage.
  • the current through the transistor 20 may not be completely interrupted, otherwise no continuous output voltage could be generated between the terminals 14 and 16 more.
  • the voltage regulation circuit should be able to process input DC voltages from 20V to 55V and an input AC voltage up to 253V.
  • the output voltage between terminals 14 and 16 should be kept at a constant value of 11V.
  • the Zener diode 22 has a Zener voltage value of 16V
  • the Zener diode 32 has a Zener voltage value of 5.6V
  • the Zener diode 38 has a Zener voltage value of 10V.

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)

Claims (6)

  1. Circuit de régulation de tension destiné à la génération d'une tension de sortie continue régulée à partir d'une tension d'entrée, lequel circuit de régulation de tension comprend un régulateur série composé d'un transistor (20) pilotable par le biais d'une grille (21) qui, à l'état passant, est traversé par un courant commandé par la tension d'entrée, un condensateur de charge (46) étant chargé par le courant circulant à travers le transistor (20) à l'état passant et la tension de sortie régulée étant formée au moyen de la tension de charge du condensateur de charge (46), caractérisé en ce qu'un premier commutateur de seuil (26, 28, 30, 32) soumis à la tension d'entrée est relié à la grille (21) du transistor (20), commutateur appliquant à cette grille (21) une tension bloquant le transistor (20) dès que la tension d'entrée dépasse un seuil prédéfini, et en ce qu'un deuxième commutateur de seuil (36, 38, 40, 42) soumis à la tension de sortie est relié à la grille (21) du transistor (20), commutateur appliquant à cette grille (21) une tension de blocage dès que la tension continue de sortie dépasse une valeur de consigne prédéfinie.
  2. Régulateur de tension selon la revendication 1, caractérisé en ce que le transistor (20) du régulateur série est un transistor à effet de champ.
  3. Régulateur de tension selon la revendication 1 ou 2, caractérisé en ce que la tension d'entrée est une tension continue non régulée.
  4. Régulateur de tension selon la revendication 1 ou 2, caractérisé en ce que la tension d'entrée est une tension alternative non régulée, qui est redressée au moyen d'un redresseur (18) prévu à l'entrée du régulateur série.
  5. Circuit de régulation de tension selon la revendication 4, caractérisé en ce que le premier commutateur de seuil contient un diviseur de tension composé de deux résistances (26, 28) placées en série, se trouvant entre la borne de sortie positive du redresseur (18) et la borne de sortie négative constituant la masse, diviseur dont le point de prélèvement (34) est relié à la grille d'un transistor à effet de champ (30), le drain de ce transistor à effet de champ (30) étant relié à la grille du transistor (20) du régulateur série, tandis que sa source est reliée à la cathode d'une diode Zener (32), dont l'anode est reliée à la masse.
  6. Circuit de régulation de tension selon l'une des revendications 1 à 5, caractérisé en ce que le deuxième commutateur de seuil contient un diviseur de tension soumis à la tension continue de sortie régulée, comprenant un circuit série composé d'une résistance (36), d'une diode Zener (38) et d'une autre résistance (40) ainsi que d'un transistor bipolaire NPN (42), dont la base est connectée au point de jonction (48) entre l'anode de la diode Zener (38) et la résistance (40) et dont le circuit collecteur-émetteur se trouve entre la grille du transistor (20) du régulateur série et la masse.
EP98105108A 1998-03-20 1998-03-20 Circuit de régulation de tension Expired - Lifetime EP0943974B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE59813694T DE59813694D1 (de) 1998-03-20 1998-03-20 Spannungsregelschaltung
EP98105108A EP0943974B1 (fr) 1998-03-20 1998-03-20 Circuit de régulation de tension
CA002264437A CA2264437C (fr) 1998-03-20 1999-03-03 Circuit de regulateur de tension
US09/262,434 US6094040A (en) 1998-03-20 1999-03-04 Voltage regulator circuit
HU9900687A HU225080B1 (en) 1998-03-20 1999-03-18 Voltage regulator arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98105108A EP0943974B1 (fr) 1998-03-20 1998-03-20 Circuit de régulation de tension

Publications (2)

Publication Number Publication Date
EP0943974A1 EP0943974A1 (fr) 1999-09-22
EP0943974B1 true EP0943974B1 (fr) 2006-08-23

Family

ID=8231629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98105108A Expired - Lifetime EP0943974B1 (fr) 1998-03-20 1998-03-20 Circuit de régulation de tension

Country Status (5)

Country Link
US (1) US6094040A (fr)
EP (1) EP0943974B1 (fr)
CA (1) CA2264437C (fr)
DE (1) DE59813694D1 (fr)
HU (1) HU225080B1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6509724B1 (en) * 2000-10-27 2003-01-21 General Electric Company Housekeeping power supply for electronically controlled loads
FR2821306B1 (fr) * 2001-02-26 2007-10-19 Valeo Vision Dispositif d'alimentation pour composants electriques installes dans un vehicule automobile
US6541879B1 (en) 2001-03-23 2003-04-01 Cypress Semiconductor Corp. USB hub power management
USRE40320E1 (en) 2001-04-02 2008-05-20 E-Tech Corporation Permanent magnet alternator and voltage regulator circuit for the permanent magnet alternator
US6690145B2 (en) 2002-04-01 2004-02-10 E-Tec Corporation Permanent magnet alternator and voltage regulator circuit for the permanent magnet alternator
US7689724B1 (en) 2002-08-16 2010-03-30 Cypress Semiconductor Corporation Apparatus, system and method for sharing data from a device between multiple computers
US7293118B1 (en) 2002-09-27 2007-11-06 Cypress Semiconductor Corporation Apparatus and method for dynamically providing hub or host operations
US6774610B2 (en) * 2002-11-06 2004-08-10 Crydom Limited AC voltage regulator apparatus and method
US7653123B1 (en) 2004-09-24 2010-01-26 Cypress Semiconductor Corporation Dynamic data rate using multiplicative PN-codes
US9071073B2 (en) * 2007-10-04 2015-06-30 The Gillette Company Household device continuous battery charger utilizing a constant voltage regulator
US9256239B2 (en) * 2011-03-17 2016-02-09 Watlow Electric Manufacturing Company Voltage controlling circuit
RU2463639C1 (ru) * 2011-06-29 2012-10-10 Открытое акционерное общество "Концерн "Созвездие" Стабилизатор постоянного напряжения
EP2932801B1 (fr) * 2012-12-17 2017-11-15 Telefonaktiebolaget LM Ericsson (publ) Circuit électronique pour protéger une charge contre les surtensions
FR3101492A1 (fr) * 2019-10-01 2021-04-02 Schneider Electric Industries Sas circuit de régulation en tension et module d’alimentation régulée
US12105546B2 (en) * 2020-04-08 2024-10-01 Schaeffler Technologies AG & Co. KG Control circuit and control unit for a vehicle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421133A1 (de) * 1984-06-07 1985-12-12 Philips Patentverwaltung Schaltungsanordnung zur versorgung der regel- und steuereinrichtung eines geregelten gleichspannungswandlers
US4754388A (en) * 1985-07-15 1988-06-28 Harris Corporation Regulator circuit for converting alternating input to a constant direct output
DE3713540A1 (de) * 1987-04-22 1988-11-10 Siemens Ag Kombinierter sekundaerschalter
US4893228A (en) * 1987-09-01 1990-01-09 Hewlett Packard Company High-efficiency programmable power supply
US5191278A (en) * 1991-10-23 1993-03-02 International Business Machines Corporation High bandwidth low dropout linear regulator
US5773965A (en) * 1995-10-24 1998-06-30 Rohm Co., Ltd. Switching power supply apparatus for converting a high DC voltage into a low DC voltage
US5686821A (en) * 1996-05-09 1997-11-11 Analog Devices, Inc. Stable low dropout voltage regulator controller
JPH09325825A (ja) * 1996-06-06 1997-12-16 Pioneer Electron Corp 電圧平滑化回路
US5754388A (en) * 1996-06-14 1998-05-19 Schmidt; Ernest A. Electrical charge dissipation device
DE29616457U1 (de) * 1996-09-23 1998-01-29 Robert Bosch Gmbh, 70469 Stuttgart Schaltungsanordnung zur Wandlung einer Gleichspannung in eine andere Gleichspannung bei gleichzeitiger Regelung der abgebbaren Spannung auf einen vorgegebenen Wert

Also Published As

Publication number Publication date
HUP9900687A3 (en) 2002-11-28
CA2264437A1 (fr) 1999-09-20
HU9900687D0 (en) 1999-05-28
EP0943974A1 (fr) 1999-09-22
HUP9900687A2 (hu) 1999-11-29
US6094040A (en) 2000-07-25
HU225080B1 (en) 2006-06-28
DE59813694D1 (de) 2006-10-05
CA2264437C (fr) 2001-12-04

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