EP0860762A2 - Circuit et méthode pour générer une tension de sortie continue - Google Patents

Circuit et méthode pour générer une tension de sortie continue Download PDF

Info

Publication number
EP0860762A2
EP0860762A2 EP98101782A EP98101782A EP0860762A2 EP 0860762 A2 EP0860762 A2 EP 0860762A2 EP 98101782 A EP98101782 A EP 98101782A EP 98101782 A EP98101782 A EP 98101782A EP 0860762 A2 EP0860762 A2 EP 0860762A2
Authority
EP
European Patent Office
Prior art keywords
voltage
input
batt
supply voltage
output
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Withdrawn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
EP98101782A
Other languages
German (de)
English (en)
Other versions
EP0860762A3 (fr
Inventor
Günter Fendt
Norbert Müller
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.)
Aumovio Microelectronic GmbH
Original Assignee
Temic Telefunken Microelectronic 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
Priority claimed from DE1997107422 external-priority patent/DE19707422C1/de
Priority claimed from DE1997107423 external-priority patent/DE19707423C1/de
Application filed by Temic Telefunken Microelectronic GmbH filed Critical Temic Telefunken Microelectronic GmbH
Publication of EP0860762A2 publication Critical patent/EP0860762A2/fr
Publication of EP0860762A3 publication Critical patent/EP0860762A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • G05F1/462—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC as a function of the requirements of the load, e.g. delay, temperature, specific voltage/current characteristic
    • G05F1/465—Internal voltage generators for integrated circuits, e.g. step down generators
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is DC
    • G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/18—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using Zener diodes
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F5/00—Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output

Definitions

  • the invention relates to a circuit arrangement for generating a DC supply voltage as a function of an input DC voltage according to the preamble of claim 1 and a Method for generating a DC supply voltage for a signal generator unit according to claim 7.
  • Such circuit arrangements are used to e.g. Sensors with downstream signaling unit with a voltage that is designed so that fluctuations in the DC input voltage Functionality of the unit to be supplied is not endangered. It has The voltage difference with which the Supply voltage for the consumer below the input voltage is, as shown in Figure 1, up to a first value of the input voltage to keep to a first, constant value and from one certain value of the input voltage to a second larger value to keep constant. In the intermediate transition area, in Normal operation, the supply voltage remains constant and is regardless of the input voltage.
  • DE 41 31 170 A teaches a device in which means a Zener diode (Z diode) and a comparator and a controllable Current source a supply voltage is generated, which is in Intervals changes depending on the input voltage.
  • Z diode Zener diode
  • a comparator a comparator
  • a controllable Current source a supply voltage is generated, which is in Intervals changes depending on the input voltage.
  • This arrangement also proves due to its complexity, especially the controllable power source, as too complex and expensive.
  • the supply voltage is a non-constant DC input voltage, for example a battery, won and for the Signaling unit provided.
  • a preferred area of application for such methods is the coupling of decentralized sensor systems with central control electronics in motor vehicles, where the outsourced sensors and the associated signal generator units no longer directly from the vehicle electrical system voltage, but instead indirectly supplied by the central control unit using a current interface will.
  • the changes in current are made by the central control unit of the power supply line to the outsourced signal generator unit.
  • the object of the invention is to produce a circuit arrangement specify a DC supply voltage with that described above DC supply voltage curve as a function of the DC input voltage can be achieved in a simple manner.
  • the task is furthermore, a method for generating a DC supply voltage to show for a signaling unit in which fluctuations in DC input voltage largely does not transmit the current signal hinder.
  • the task is through the features of claim 1 for the Circuit arrangement and solved by claim 7 for the method.
  • the circuit arrangement generates the desired profile of the DC supply voltage depending on the input DC voltage by means of a surprisingly simple circuit arrangement based on two zener diode arrays.
  • Advantageous developments of the invention are described in claims 2 to 6. These describe in particular the dimensioning of the individual components.
  • the control loop tracking according to claim 5 enables a non-reactive Current decoupling of the circuit arrangement.
  • a DC supply voltage is provided, which over a Control circuit the DC supply voltage at the connection to the signal generator unit tracks the generated DC supply voltage without retroactive effect.
  • Three connected input voltage intervals are preferred distinguished.
  • the DC supply voltage of the input DC voltage is increased by one constant first amount reduced tracking, resulting in an emergency operation the signaling unit is guaranteed and also the Evaluation circuit can evaluate the signals of the signal generator unit, too if these are reduced.
  • a subsequent second Voltage interval becomes the supply voltage with a constant nominal amount provided. This means that voltage compensation takes place for the normal operating state. However, if the DC input voltage exceeds this second voltage interval, follows DC supply voltage reduced by a second constant amount the input DC voltage.
  • the inventive solution also ensures outside the compensated voltage range in normal operation defined states on the signaling unit and thus a the best possible maintenance of the operation of the signaling unit and the evaluation circuit, for example in the event of input voltage fluctuations.
  • This Methods so advantageous for signal transmission by means of the signal stream can be extremely simple and effective through the circuit arrangement Realize according to one of claims 1 to 5, and in principle also other circuit arrangements, such as from the not yet disclosed Patent application DE 196 07 802 (EP 0 793 159) for generating the three Voltage intervals can be used.
  • This circuitry then need to proceed according to the characteristics of claim 7 in the control loop, the output voltage at the connection to the signal generator unit (Sat) of the generated DC supply voltage tracks and ensures freedom of feedback.
  • FIG. 1 shows the three voltage intervals I 1 , I 2 , I 3 of the input DC voltage U batt and the assigned supply voltage U out on the output side.
  • the first interval I 1 the DC supply voltage of the input DC voltage U batt is tracked reduced by a constant first amount ⁇ U 1 in this area.
  • the supply voltage U out is maintained at the desired nominal voltage Unom.
  • an output voltage U out is generated in the voltage interval I 3 , which follows the input voltage U batt reduced by a second constant amount ⁇ U 2 .
  • the possible circuitry implementation is explained in more detail in connection with FIGS. 3 and 5.
  • FIG. 1 first generates the DC supply voltage U z from the DC input voltage, while the control circuit 2 produces the output voltage U out at the connection to the unit to be supplied (for example a signal transmitter unit (Sat), see exemplary embodiment according to FIG 3) the DC supply voltage U z generated by the circuit arrangement 1 leads to.
  • a signal transmitter unit see exemplary embodiment according to FIG 3
  • the current pulses I signal generated by the signal transmitter unit Sat in the exemplary embodiment explained in more detail in FIG. 3 do not lead to fluctuations in the applied output voltage U out , since the interposed control circuit 2 immediately compensates for this, without having any effect on the circuit arrangement 1.
  • Figures 3 and 5 show the input with the non-compensated, non-constant input DC voltage U Batt , for example a connection to a car battery.
  • I 1 there is a first current path I 1 and a second current path I 2 parallel to it.
  • I 1 a number n of diodes D 1 ... D n connected in series are arranged poled in the forward direction, the number n of diodes D determining the first constant amount ⁇ U 1 .
  • these are connected to ground via a first resistor R 1 , so that a diode current is created which is so large that the diodes D 1 ...
  • the last diode in FIG. 3 D 2 , in FIG. 5 D n
  • the last diode is connected to the output of the DC supply voltage U z via a second, high-resistance resistor R 2 .
  • the output of the DC supply voltage U z is connected to ground via a third resistor R 3 and a second Z-diode arrangement Z 2 in series therewith.
  • the Zener voltage of the Z 2 is the DC supply voltage U z is reduced by the voltage drop U D via the diodes D 1 ... D n constant for the input DC voltage U Batt tracked until reaching. If the input DC voltage U Batt now exceeds the value of Z 2 , the second Zener diode Z 2 becomes conductive. The current through the diodes D 1 ... D n can thus flow to ground both via the resistor R 1 and in parallel to it through the series arrangement of R 2 , R 3 and Z 2 .
  • a voltage divider is formed from the resistors R 2 and R 3 , with R 2 being chosen to be higher by a factor of 100 than R 3 by a factor of 100, so that a change in voltage of the input DC voltage U Batt is smaller by a factor of 100 and is therefore not detectable by D 1. .D n works. Compensation for the DC input voltage changes, e.g. the battery voltage fluctuations, is achieved. However, if the input DC voltage U Batt exceeds a value which is around UZ 2 plus UZ 1 , the first Zener diode Z 1 in the second current path I 2 also becomes conductive. This bridges the diodes and the resistor R 2 . The voltage divider between R 2 and R 3 is eliminated.
  • the DC supply voltage U z now follows in a second constant amount ⁇ U 2 of the input DC voltage U Batt , the second amount ⁇ U 2 being largely determined by the voltage UZ 1 .
  • the Zener diode arrangements Z 1 and Z 2 can be implemented both simple Z diodes and temperature compensated Zener diode arrangements, for example by connecting them in series with temperature compensating diodes with correspondingly different temperature coefficients.
  • the desired dependency of the DC supply voltage U z on the applied DC input voltage U batt arises .
  • this embodiment of the circuit arrangement according to FIG. 5 can also be used advantageously for other uses than that shown in FIG. 3, that is to say without a signal transmitter unit for current signaling and an associated evaluation circuit or the control circuit 2, due to its simplicity.
  • circuit arrangement discussed 1 shows the overall arrangement according to FIG. 3, this shows the preferred use the circuit arrangement for the voltage supply of a signal generator unit Sat, which is controlled via a control circuit 2.
  • a control circuit 2 instead of the particularly preferred embodiment of the circuit arrangement 5 could in principle also be another suitable one Circuit arrangement, for example in DE 196 07 802 (EP 0 793 159) described, can be arranged before the control loop 2, the design 5 already described Has advantages.
  • the control circuit 2 compares the output voltage U out with the DC supply voltage U z present on the input side.
  • the signal transmitter unit Sat has a closed-circuit current path I R and a signal current path I signal . As is known, this can be achieved, for example, by switchable signal loads.
  • the evaluation circuit I mess is arranged between the control circuit 2 and the recompensated input of the circuit arrangement 1 which is at U batt and is formed via a current mirror, formed from the transistors T 2 and T 3 , as well as the resistors RM 1 and RM 2 and a constant current source the signal sent by the transmitter unit satellite signal current I evaluates signal by a comparator K 2 compares the voltage drops across the resistors RM 1 and RM 2 and the output signal S passes to further processing, for example to a microprocessor.
  • the control circuit 2 is formed from a comparator K 1 , at the output of which there is the resistor R K and the transistor T K , the transistor T K being connected as a series transistor with the base to the comparator K 1 and with the emitter to the signaling unit Sat.
  • the DC supply voltage U z generated by the circuit arrangement 1 is compared in the comparator K 1 with U out and U out is readjusted accordingly.
  • the current pulses I signal in the amount of 40 mA for signal transmission, which are considerable in this exemplary embodiment, act, decoupled by the control circuit 2, not on the supply voltage-generating circuit arrangement 1.
  • the current pulses I signal are conducted quasi unaffected by the transistor TK to the current measuring evaluation circuit I mess and recognized there.
  • the voltage across the evaluation circuit I mess is the difference between the DC input voltage U Batt and the output voltage U out at the signal generator unit Sat and the voltage drop across the transistor TK.
  • the difference is limited by the method used and is therefore approximately between the amounts ⁇ U 1 and ⁇ U 2 .
  • the functioning of the evaluation circuit I measurement is thus ensured by the circuit 1 and the control circuit 2, even if the DC input voltage U Batt strongly deviates from the desired nominal voltage Unom.
  • FIG. 4 shows the functional curves of characteristic quantities in the circuit arrangement shown in FIG. 3.
  • Figure 4a shows the current pulses I signal plus the constant quiescent current I r .
  • Diagram 4b shows the output voltage U out at the signal transmitter unit Sat.
  • the output voltage U out has extremely short excursions in the edge moments of the signal current I signal , but is immediately returned to the set operating point by the control circuit 2 by the base current in control circuit 2 responding ( see Fig. 4d).
  • the signal arrives unadulterated at the output S of the evaluation circuit I mess (cf. FIG. 4c).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
  • Dc-Dc Converters (AREA)
  • Control Of Electrical Variables (AREA)
EP98101782A 1997-02-25 1998-02-03 Circuit et méthode pour générer une tension de sortie continue Withdrawn EP0860762A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1997107422 DE19707422C1 (de) 1997-02-25 1997-02-25 Verfahren zum Erzeugen einer Versorungsgleichspannung für eine Signalgebereinheit
DE1997107423 DE19707423C1 (de) 1997-02-25 1997-02-25 Schaltungsanordnung zum Erzeugen einer Versorgungsspannung
DE19707422 1998-02-16
DE19707423 1998-02-16

Publications (2)

Publication Number Publication Date
EP0860762A2 true EP0860762A2 (fr) 1998-08-26
EP0860762A3 EP0860762A3 (fr) 1999-04-07

Family

ID=26034238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101782A Withdrawn EP0860762A3 (fr) 1997-02-25 1998-02-03 Circuit et méthode pour générer une tension de sortie continue

Country Status (2)

Country Link
US (1) US6150874A (fr)
EP (1) EP0860762A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007099079A1 (fr) * 2006-02-28 2007-09-07 Continental Automotive Gmbh Circuit d'interface, contrôleur de moteur et procédé d'interprétation d'un signal de courant de capteur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100865852B1 (ko) * 2007-08-08 2008-10-29 주식회사 하이닉스반도체 레귤레이터 및 고전압 발생기
US10739800B2 (en) * 2016-07-21 2020-08-11 Hewlett-Packard Development Company, L.P. Regulating an output power of a monitored electronic device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314423C3 (de) * 1973-03-23 1981-08-27 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur Herstellung einer Referenzgleichspannungsquelle
DE2533199C3 (de) * 1975-07-24 1981-08-20 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Erzeugung einer von Änderungen der Versorgungsspannung unabhängigen Hilfsspannung
JP2809768B2 (ja) * 1989-11-30 1998-10-15 株式会社東芝 基準電位発生回路
US5184031A (en) * 1990-02-08 1993-02-02 Kabushiki Kaisha Toshiba Semiconductor integrated circuit
DE4113433A1 (de) * 1990-04-30 1992-01-09 Sihn Jr Kg Wilhelm Geregeltes netzteil, insbesondere fuer ein tragbares antennenmessgeraet
DE4131170A1 (de) * 1991-09-19 1993-03-25 Telefunken Electronic Gmbh Vorrichtung zur erzeugung von zwischenspannungen
JPH06103748A (ja) * 1992-09-16 1994-04-15 Mitsubishi Electric Corp Ｉｃメモリカードの電源制御回路
JP2925422B2 (ja) * 1993-03-12 1999-07-28 株式会社東芝 半導体集積回路
JPH07175535A (ja) * 1993-12-16 1995-07-14 Nec Corp Ｆｅｔ増幅器用電源回路
KR0156426B1 (ko) * 1995-10-31 1998-11-16 김광호 원격제어용 펄스 가공회로
DE19607802C2 (de) * 1996-03-01 1999-08-19 Temic Semiconductor Gmbh Schaltungsanordnung zum Erzeugen einer Versorgungsspannung
JP3036438B2 (ja) * 1996-07-31 2000-04-24 日本電気株式会社 アナログスイッチ回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007099079A1 (fr) * 2006-02-28 2007-09-07 Continental Automotive Gmbh Circuit d'interface, contrôleur de moteur et procédé d'interprétation d'un signal de courant de capteur

Also Published As

Publication number Publication date
EP0860762A3 (fr) 1999-04-07
US6150874A (en) 2000-11-21

Similar Documents

Publication Publication Date Title
DE3872494T2 (de) Kraftfahrzeuginformationsuebertragungsvorrichtung und verfahren zur anwendung der vorrichtung.
EP0999955B1 (fr) Systeme pour transmettre des donnees dans un vehicule a moteur
DE2727201A1 (de) Beruehrungssteuertastenschaltung
EP1327290B1 (fr) Ensemble circuit pour surveiller et/ou regler des tensions d'alimentation
EP0860762A2 (fr) Circuit et méthode pour générer une tension de sortie continue
WO2006040203A1 (fr) Interface de capteur a mesure du courant integree
DE112018006271T5 (de) Signalausgabevorrichtung
EP0483450B1 (fr) Dispositif de circuit en tant qu'élément avec au moins un actionneur semi-conducteur pour mettre en circuit
EP0725995B1 (fr) Installation d'alimentation a distance
DE3717591C2 (fr)
DE19707422C1 (de) Verfahren zum Erzeugen einer Versorungsgleichspannung für eine Signalgebereinheit
DE2416533B2 (de) Elektronische Schaltungsanordnung zur Spannungsstabilisierung
DE102008048929A1 (de) Prüfung der Meldelinien einer Gefahrenmeldeanlage
DE2725933A1 (de) Druck-impulsdauer-wandler
EP0934627B1 (fr) Circuiterie pour evaluer un signal binaire defini par des valeurs seuils de courant
DE19707423C1 (de) Schaltungsanordnung zum Erzeugen einer Versorgungsspannung
WO1999049321A1 (fr) Circuit d'evaluation pour emetteurs electroniques de signaux
DE3625318C2 (fr)
EP0656696A2 (fr) Dispositif de couplage d'énergie en courant continu à un bus à deux fils pour la transmission d'énergie et de données
DE3527619C1 (de) Selbstprüfender Näherungsschalter
EP0450418B1 (fr) Dispositif pour transmettre un signal d'entrée électrique à modulation de largeur d'impulsion
EP0412573B1 (fr) Circuit de conversion d'un signal analogique en fréquence
DE1463133A1 (de) Elektrische Vorrichtung
DE10122023A1 (de) Anordnung und Verfahren zur Ermittlung des jeweils aktuellen Pegels eines digitalen Signals
DE19918512C1 (de) Schaltungsanordnung mit einer Reduktionsschaltung zur Reduktion von Störlängsspannungen auf einer Zweidrahtleitung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19990319

AKX Designation fees paid

Free format text: DE ES FR GB IT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TEMIC TELEFUNKEN MICROELECTRONIC GMBH

17Q First examination report despatched

Effective date: 20000904

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20001006