EP1438781A2 - Circuit d'alimentation en tension continue pour des consommateurs raccordes a au moins une ligne - Google Patents

Circuit d'alimentation en tension continue pour des consommateurs raccordes a au moins une ligne

Info

Publication number
EP1438781A2
EP1438781A2 EP02779181A EP02779181A EP1438781A2 EP 1438781 A2 EP1438781 A2 EP 1438781A2 EP 02779181 A EP02779181 A EP 02779181A EP 02779181 A EP02779181 A EP 02779181A EP 1438781 A2 EP1438781 A2 EP 1438781A2
Authority
EP
European Patent Office
Prior art keywords
line
switching means
voltage
control input
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.)
Granted
Application number
EP02779181A
Other languages
German (de)
English (en)
Other versions
EP1438781B1 (fr
Inventor
Heiko BÜHRING
Ewald Mauritz
Klaus-Dieter Meier
Hans-Georg Bogenrieder
Holger Wulff
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.)
Robert Bosch GmbH
Conti Temic Microelectronic GmbH
Original Assignee
Robert Bosch GmbH
Conti Temic 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
Application filed by Robert Bosch GmbH, Conti Temic Microelectronic GmbH filed Critical Robert Bosch GmbH
Publication of EP1438781A2 publication Critical patent/EP1438781A2/fr
Application granted granted Critical
Publication of EP1438781B1 publication Critical patent/EP1438781B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to a DC voltage supply circuit for consumers connected to at least one line according to the preamble of claim 1.
  • the switching means also called series switches, interposed for the purpose of overvoltage protection between the supply voltage source and the line or lines to the consumers, are usually controlled by a Zener diode which, when a predetermined maximum value of the voltage on the line exceeds the control input with the Line connects and the switching means is opened.
  • Self-conducting field effect transistors are used in particular for this.
  • a suitable DC voltage supply circuit is to be presented, which is also particularly suitable for use in a central unit of a bus system in which current and / or voltage signals are transmitted on the line (s) to the connected consumers and modulated onto the DC voltage.
  • a voltage expensive used which is connected in series with a first current source in the direction of the supply voltage source and a second current source in the direction of the reference potential, so that the current flow through the voltage divider and thus the voltage at the control input is largely constant compared to the possibly fluctuating voltage level on the line ,
  • the current source directed towards the reference potential ensures that when the predetermined maximum value of the voltage on the line and breakdown of the Z diode is exceeded, the control input is connected to the line and the switching means is opened, but on the other hand the current flow remains low. In the event of an overvoltage, the current source significantly limits the current flow and thus carries a significant part of the voltage drop.
  • Known circuit arrangements, such as current mirrors, can be used as current sources.
  • another switching means is preferably also switched in the line carrying the reference potential in synchronism with the switching means between the supply voltage source and the line to the consumers.
  • the supply circuit can also be designed in a simple manner for changing the line carrying the supply voltage.
  • FIG. 1 shows a DC voltage supply circuit as can be used, for example, in a central unit of a bus system, in which one or more consumers 5 are connected to the line (s) L out ⁇ , L out2 of the bus system. These can be connected to the lines in parallel or in series, as a daisy chain or with their own reference potential connection without a return line. Current and / or voltage signals ⁇ U, ⁇ l are modulated onto the DC voltage.
  • the DC voltage supply circuit is thus connected to consumer 5 via at least one line Loutl and has a switching means 1 between a supply voltage source Uq and the line L ou t ⁇ , the switching means 1 being controllable via a control input 11.
  • the switching means 1 is preferably a self-conducting one
  • Field effect transistor is provided, the control input 11 corresponding to the gate of the field effect transistor 1.
  • a Zener diode 4 is connected between the line L out ⁇ and the control input 11, which breaks down when a predetermined maximum value of the voltage U zmax on the line L out ⁇ is exceeded and thus connects the control input 11 to the line.
  • the switching means 1 is thus opened via the control input 11, that is to say controlled in the blocking state.
  • a voltage divider R1 / R2 is provided between the internal supply voltage source Uq and the reference potential (ground JL), which has a center tap 81, which is connected to the control input 1 of the switching means 1.
  • the voltage divider is made up of two resistors Rl, R2 formed, but can in principle also be formed by other components with a defined voltage drop, for example by diodes.
  • a first current source Iql is connected from the center tap 81 to the supply voltage source Uq and a second current source Iq2 is connected in series from the center tap 81 to the reference potential J_.
  • the second current source Iq2 can also be regarded as a current sink due to its connection to reference potential -L.
  • Known current mirror circuits are preferred in particular as a circuit design because of their constant current properties and dielectric strength over the expected interference voltages.
  • the current sources Iql and Iq2 each preferably have a predetermined current value, which is determined such that when the Z diode 4 is blocked, a voltage drop below a limit value, preferably a negligible voltage drop, occurs across the current sources Iql, Iq2, ie the current value of these current sources Iql and Iq2 approximately corresponds to Uq-U D i 0 ae / (R2 + R1).
  • a voltage of approximately Iq2 * R2 is present at the control input 11. This voltage at the control input 11 is isolated from the supply voltage Uq thanks to the first current source Iql, so that fluctuations, for example due to the data transmission by means of superimposed current and / or voltage pulses, do not cause interference.
  • Such a DC voltage supply circuit is used, for example, in the central unit of a bus system for energy and data transmission in vehicles, in particular in vehicles with two different supply voltages.
  • the control input 11 is connected to the line L out ⁇ and the switching means 1 is opened.
  • the current source Iq2 due to the now strongly current-limiting effect of the current source Iq2, only the corresponding current value continues to flow through the resistor R2, so that a large part of the overvoltage is absorbed by the current source circuit Iq2.
  • a diode D is also installed as additional protection, which blocks in the event of overvoltage and protects the current source Iql.
  • a second switching means 6 is preferably provided between this second line Lout2 and the reference potential _L, which is controlled as a function of the signal at the control input 11 of the first switching means 1.
  • This switching means 6 is also preferably a self-conducting field effect transistor, the control inputs being able to be coupled directly or via a converter circuit 61 if this is necessary for the synchronous actuation on account of the other voltage conditions.
  • the supply circuit for a change of the line L ou t ⁇ or L out2 carrying the supply voltage can be designed symmetrically by providing two assigned internal line sections Linl, Lin2 in FIG. 2, one line Loutl / Lout2 each via a switching means 1 , 6 can be connected to the assigned internal line section Linl, Lin2.
  • Each line Loutl, Lout2 each has a Z-diode 4.1, 4.2 connected to the control input 11 of the switching means 1.6.
  • the internal line sections Linl, Lin2 is an H-bridge with four diodes Dll, D12, D21, D22 and one Central branch 8 is provided.
  • One of the internal line sections Linl, Lin2 can optionally be connected to the supply voltage source Uq and the other to the reference potential J_, the diodes D11, D12, D21, D22 of the H-bridge being polarized so that the current flow direction in the central branch 8 remains the same regardless of the selection of the internal line section Linl, Lin2 connected to the supply voltage source Uq.
  • the voltage divider R1 / R2 with the center tap 81 is again arranged, to which (81) the control inputs 11 and 61 of the switching means 1.6 are connected in this example via a control circuit 7.
  • the current sources Iql, Iq2 are again arranged on both sides of the center tap 81.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un circuit d'alimentation en tension continue, destiné à des consommateurs raccordés à au moins une ligne et apte à être utilisé dans une unité centrale comprenant des consommateurs raccordés par l'intermédiaire d'un système de bus, des signaux de courant ou de tension modulés à la tension continue étant transmis sur les lignes du système de bus. Un moyen de commutation manoeuvrable est monté entre une source de tension d'alimentation et la ligne et une diode Zener est montée entre la ligne et l'entrée de commande de ce moyen de commutation afin d'assurer une protection contre des surtensions sur la ou les lignes. En outre, on prévoit, entre la source de tension d'alimentation et un potentiel de référence, un diviseur de tension présentant une prise médiane qui est reliée à l'entrée de commande du moyen de commutation. On monte en série une première source de courant sur le chemin allant de la prise médiane à la source de tension d'alimentation, ainsi qu'une deuxième source de courant sur le chemin allant de la prise médiane au potentiel de référence. Ces deux sources de courant découplent l'entrée de commande de la source de tension d'alimentation et limitent, en cas de surtensions, le flux de courant traversant la diode Zener et le diviseur de tension sur la base du potentiel de référence.
EP02779181A 2001-10-27 2002-10-25 Circuit d'alimentation en tension continue pour des consommateurs raccordes a au moins une ligne Expired - Lifetime EP1438781B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2001153158 DE10153158A1 (de) 2001-10-27 2001-10-27 Gleichspannungsversorgungsschaltung für an zumindest einer Leitung angeschlossene Verbraucher
DE10153158 2001-10-27
PCT/DE2002/004021 WO2003038977A2 (fr) 2001-10-27 2002-10-25 Circuit d'alimentation en tension continue pour des consommateurs raccordes a au moins une ligne

Publications (2)

Publication Number Publication Date
EP1438781A2 true EP1438781A2 (fr) 2004-07-21
EP1438781B1 EP1438781B1 (fr) 2007-11-28

Family

ID=7703979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02779181A Expired - Lifetime EP1438781B1 (fr) 2001-10-27 2002-10-25 Circuit d'alimentation en tension continue pour des consommateurs raccordes a au moins une ligne

Country Status (3)

Country Link
EP (1) EP1438781B1 (fr)
DE (2) DE10153158A1 (fr)
WO (1) WO2003038977A2 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3526177A1 (de) * 1985-07-23 1987-02-05 Bosch Gmbh Robert Rberspannungs-schutzschaltung
DE19728783A1 (de) * 1997-07-05 1999-01-14 Bosch Gmbh Robert Überspannungsschutzschaltung, insbesondere für Eingänge integrierter Schaltungen
DE19853100A1 (de) * 1998-11-18 2000-05-31 Bosch Gmbh Robert Stromversorgungsschaltung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03038977A3 *

Also Published As

Publication number Publication date
WO2003038977A2 (fr) 2003-05-08
DE10153158A1 (de) 2003-05-15
EP1438781B1 (fr) 2007-11-28
DE50211297D1 (de) 2008-01-10
WO2003038977A3 (fr) 2003-10-16

Similar Documents

Publication Publication Date Title
DE19817767C2 (de) Halbleiter-Leistungsschaltung
EP1526633B1 (fr) Circuit fournissant un courant alternatif
DE19710319B4 (de) Schaltung zum Sperren einer Halbleiterschaltvorrichtung bei Überstrom
DE69412891T2 (de) Überspannungsschutzschaltung
EP0620957B1 (fr) Circuit de protection d'un transistor de puissance mos a effet de champ
DE102009052212A1 (de) System und Verfahren zum Schutz vor Batterieverlust in Geräten mit Verpolungsschutz
DE102016103167A1 (de) System und Verfahren für eine Fehlerschutzschaltung
EP2342824A1 (fr) Circuit en demi-pont protégé contre les courts-circuits avec commutateurs semiconducteurs
DE1537966A1 (de) Digital-Analog-Umwandler
DE102004062032A1 (de) Schaltungsanordnung zur schnellen Reduzierung eines induzierten Stroms
EP0443155A1 (fr) Appareillage électrique pour enclencher et déclencher
EP0342693A1 (fr) Système d'alimentation en courant continu avec plusieurs sources de courant continu
WO1990015922A1 (fr) Circuits de commande de consommateurs electromagnetiques
EP1094605B1 (fr) Montage servant à commander une charge à rayonnement parasite réduit
EP1327290B1 (fr) Ensemble circuit pour surveiller et/ou regler des tensions d'alimentation
DE19838109B4 (de) Ansteuerschaltung für induktive Lasten
EP1438781B1 (fr) Circuit d'alimentation en tension continue pour des consommateurs raccordes a au moins une ligne
DE19604041C1 (de) Schaltungsanordnung zur Erkennung eines durch eine Last fließenden Laststroms
DE69426935T2 (de) Elektronische Halbleiterschaltung mit Überspannungsschutz
DE10305361B4 (de) Elektronischer Hochfrequenz-Schalter
EP1453171B1 (fr) Circuit électronique de protection
EP0876699B1 (fr) Circuit limiteur de courant
EP1110320A1 (fr) Circuit d'attaque de sortie
EP0811529B1 (fr) Dispositif de commutation avec faible tolérance de rayonnement électro-magnétique
DE102013203731A1 (de) Fahrzeug-Steuergerät zur Steuerung und Versorgung eines oder mehrerer Verbraucher

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

17P Request for examination filed

Effective date: 20040304

AK Designated contracting states

Kind code of ref document: A2

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

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MAURITZ, EWALD

Inventor name: BUEHRING, HEIKO

Inventor name: WULFF, HOLGER

Inventor name: BOGENRIEDER, HANS-GEORG

Inventor name: MEIER, KLAUS-DIETER

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BUEHRING, HEIKO

Inventor name: MAURITZ, EWALD

Inventor name: WULFF, HOLGER

Inventor name: BOGENRIEDER, HANS-GEORG

Inventor name: MEIER, KLAUS-DIETER

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB SE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50211297

Country of ref document: DE

Date of ref document: 20080110

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080228

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071128

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20201020

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20201214

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50211297

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220503

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031