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EP0943974A1 - Circuit de régulation de tension - Google Patents

Circuit de régulation de tension Download PDF

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Publication number
EP0943974A1
EP0943974A1 EP98105108A EP98105108A EP0943974A1 EP 0943974 A1 EP0943974 A1 EP 0943974A1 EP 98105108 A EP98105108 A EP 98105108A EP 98105108 A EP98105108 A EP 98105108A EP 0943974 A1 EP0943974 A1 EP 0943974A1
Authority
EP
European Patent Office
Prior art keywords
voltage
field effect
effect transistor
transistor
connection
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.)
Granted
Application number
EP98105108A
Other languages
German (de)
English (en)
Other versions
EP0943974B1 (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 EP98105108A priority Critical patent/EP0943974B1/fr
Priority to DE59813694T priority patent/DE59813694D1/de
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 regulating circuit to generate a regulated DC output voltage an unregulated DC or AC voltage, with a rectifier circuit on the input side for rectification the unregulated AC voltage and a series regulator that contains a controllable transistor via a control connection and the rectifier output voltage supplied to it regulates to a first voltage value.
  • Such a voltage regulating circuit is known from US-A-4,754,388 known.
  • This voltage control circuit contains in A transistor circuit in front of the actual series regulator, that acts as a switch and that to Series regulator interrupts current flowing as soon as the Input voltage exceeds a predetermined value. The Switching off the current can lead to high current and voltage peaks lead in the circuit that leads to that in the Circuit components must be used that this can withstand high current and voltage peaks.
  • the invention has for its object a voltage control circuit to create the type specified at the beginning of the components, especially the output side used components no high requirements regarding the current and voltage resistance are set have to.
  • the voltage control circuit is used to solve this problem according to the invention, characterized in that the transistor the series regulator is a field effect transistor, which in conductive state charges a charging capacitor, the Charging voltage forms the regulated output voltage that with the control terminal of the field effect transistor one at the unregulated DC voltage first threshold circuit is connected to this control connection applies voltage blocking the field effect transistor as soon as the unregulated DC voltage over a given one Threshold increases, and that with the control connection of the Field effect transistor on the regulated output DC voltage lying second threshold circuit connected is the one at this control terminal the field effect transistor blocking voltage is applied as soon as it is regulated Output voltage rises above a specified setpoint.
  • the Field effect transistor of the series regulator by a voltage at its control connection to achieve the desired Control function controlled, which has the consequence that hard Switching operations of the current flowing through the transistor be avoided.
  • the field effect transistor behaves rather like an element with controllable impedance, which with Using the control voltages from the threshold circuits so between the low-resistance state and the high-resistance one State can be switched over that steep switching edges and thus high current and voltage peaks can be avoided.
  • the voltage control circuit shown in Figure 1 is used to do so, from an input voltage that is between the input terminals 10, 12 is applied, a regulated DC voltage to generate at the output terminals 14, 16.
  • a regulated DC voltage can it be a DC voltage or also is an AC voltage.
  • the circuit is designed so be that the input voltage is a DC voltage between 20V and 55V or an alternating voltage between 20V and is 253V.
  • the constant DC output voltage should be 11V be.
  • the input voltage is an AC voltage is, it is first of all by a bridge rectifier 18 rectified.
  • the core of the control circuit is a conventional series controller from a transistor 20, here a field effect transistor, a Zener diode 22 and a resistor 24.
  • a such series controller is known to produce at its output a constant DC output voltage, except for the Voltage drop across transistor 20 of the Zener voltage Zener diode 22 corresponds.
  • the input voltage of this Series controllers must of course always be larger than that desired regulated output DC voltage.
  • the first threshold switching consists of a voltage divider with 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 with the connection point 34 of the two resistors 26 and 28 connected, its drain connection is with the control connection 21st of the field effect transistor 20 connected, and its source terminal is connected to the cathode of the Zener diode 32, whose anode is grounded.
  • FIG. 1 In the circuit of Figure 1 is another threshold switch included, which from the series connection from a Resistor 36, a Zener diode 38 and another resistor 40 and an NPN transistor 42.
  • the series connection from the resistor 36, the Zener diode 38 and the Resistor 40 is between the output terminal 16 and Dimensions.
  • the collector of transistor 42 is connected to the control terminal 21 of the field effect transistor 20 connected while its emitter is grounded.
  • the base terminal of the transistor 42 is with the connection point between the anode the Zener diode 38 and the resistor 40 connected.
  • Between the transistor 20 and the output terminal 16 is another Resistor 44. It also lies between the output terminals 14 and 16, a charging capacitor 46.
  • the action of the above-mentioned first threshold switch begins when a predetermined value of the rectified AC voltage is reached.
  • the field effect transistor 30 changes to the conductive state, so that the voltage at the control terminal 21 of the transistor 20 drops until this transistor changes to the blocked state.
  • the circuit should be designed so that it delivers the desired regulated DC voltage of 11V at the output even with DC input voltages up to 55V.
  • the first threshold switch may of course only initiate the transition of the transistor 20 into the blocked state when the output voltage of the rectifier 18 exceeds the voltage value 55V. Early insertion of the first threshold switch would reduce the desired range of DC input voltage.
  • FIG. 2b it can be seen how the current is limited by the use of the regulating action of the series regulator from time t 1 , although the input voltage still rises. At the same time, it can be seen that from the point in time t 2 of the first threshold switch, the current through the field effect transistor 20 drops to the value zero.
  • the current flowing through transistor 20 charges through the Resistor 44 on capacitor 46. Once the tension on the capacitor 46 due to an insufficient control effect of the series regulator the desired output voltage value exceeds that due to the dimensioning of the Zener diode 38 and the resistors 36 and 40 can be set, results at node 48, i.e. at the base connection of the Transistor 42 is a voltage value that this transistor 42nd placed in the conductive state. This has the consequence that the control terminal 21 of the transistor 20 practically to ground is placed so that this transistor 20 in the blocked Condition passes. This condition lasts as long as Charging capacitor 46 is a voltage that is higher than that desired output voltage at terminals 14, 16.
  • the threshold switches each on the control terminal 21 of the transistor 20 act, only come into effect when the voltage control circuit is fed with an alternating voltage.
  • the range of the input DC voltages is namely the current not completely interrupted by transistor 20 otherwise there is no continuous output voltage more could be generated between terminals 14 and 16.
  • the voltage regulating circuit is said to DC input voltages from 20V to 55V and one Can process AC input voltage up to 253V.
  • the Output voltage between terminals 14 and 16 should be 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)
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
EP98105108A EP0943974B1 (fr) 1998-03-20 1998-03-20 Circuit de régulation de tension
DE59813694T DE59813694D1 (de) 1998-03-20 1998-03-20 Spannungsregelschaltung
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 true EP0943974A1 (fr) 1999-09-22
EP0943974B1 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
US6690145B2 (en) * 2002-04-01 2004-02-10 E-Tec Corporation Permanent magnet alternator and voltage regulator circuit for the permanent magnet alternator
USRE40320E1 (en) 2001-04-02 2008-05-20 E-Tech 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
WO2014098659A1 (fr) * 2012-12-17 2014-06-26 Telefonaktiebolaget L M 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
WO2021204320A1 (fr) * 2020-04-08 2021-10-14 Schaeffler Technologies AG & Co. KG Circuit de commande et unité de commande pour un véhicule

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754388A (en) * 1985-07-15 1988-06-28 Harris Corporation Regulator circuit for converting alternating input to a constant direct output
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
US5686821A (en) * 1996-05-09 1997-11-11 Analog Devices, Inc. Stable low dropout voltage regulator controller
EP0811901A2 (fr) * 1996-06-06 1997-12-10 Pioneer Electronic Corporation Circuit redresseur de tension et de lissage

Family Cites Families (5)

* 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
DE3713540A1 (de) * 1987-04-22 1988-11-10 Siemens Ag Kombinierter sekundaerschalter
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
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754388A (en) * 1985-07-15 1988-06-28 Harris Corporation Regulator circuit for converting alternating input to a constant direct output
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
US5686821A (en) * 1996-05-09 1997-11-11 Analog Devices, Inc. Stable low dropout voltage regulator controller
EP0811901A2 (fr) * 1996-06-06 1997-12-10 Pioneer Electronic Corporation Circuit redresseur de tension et de lissage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"SENDER UND EMPFAENGER FUER DIE OPTISCHE NF-UEBERTRAGUNG", RADIO FERNSEHEN ELEKTRONIK, vol. 45, no. 12, December 1996 (1996-12-01), pages 70/71, XP000682249 *

Also Published As

Publication number Publication date
EP0943974B1 (fr) 2006-08-23
HU225080B1 (en) 2006-06-28
HUP9900687A2 (hu) 1999-11-29
CA2264437C (fr) 2001-12-04
DE59813694D1 (de) 2006-10-05
CA2264437A1 (fr) 1999-09-20
US6094040A (en) 2000-07-25
HU9900687D0 (en) 1999-05-28
HUP9900687A3 (en) 2002-11-28

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