EP1234726A1 - Circuit pour un dispositif de commande pour véhicule motorisé - Google Patents

Circuit pour un dispositif de commande pour véhicule motorisé Download PDF

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Publication number
EP1234726A1
EP1234726A1 EP02002849A EP02002849A EP1234726A1 EP 1234726 A1 EP1234726 A1 EP 1234726A1 EP 02002849 A EP02002849 A EP 02002849A EP 02002849 A EP02002849 A EP 02002849A EP 1234726 A1 EP1234726 A1 EP 1234726A1
Authority
EP
European Patent Office
Prior art keywords
voltage
output voltage
value
circuit arrangement
input
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
EP02002849A
Other languages
German (de)
English (en)
Other versions
EP1234726B1 (fr
Inventor
Hans-Alfred Bode
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1234726A1 publication Critical patent/EP1234726A1/fr
Application granted granted Critical
Publication of EP1234726B1 publication Critical patent/EP1234726B1/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
    • G05F1/59—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 including plural semiconductor devices as final control devices for a single load

Definitions

  • the invention relates to a circuit arrangement for a control unit in one Motor vehicle for generating a stabilized output voltage from two Input voltages, the tolerance range of the first input voltage den Value can fall below the output voltage and the value of the second Input voltage corresponds at least to the value of the output voltage.
  • Such a circuit arrangement can, for example, be part of a Ballast for supplying high pressure gas discharge lamps in one Motor vehicle may be provided.
  • ballast To supply the internal electronic components (e.g. ASIC, driver stages) one such ballast, it is necessary to have at least one stabilized Generate supply voltage.
  • This tension must be very wide Input voltage range, which ranges from 6V to 24V, for example Ballast can be ensured. This is when using a Series regulator problematic when the minimum possible input voltage below the required supply voltage, which is 9V, for example can, the control unit is located.
  • the invention has the task of over the entire input voltage range Control device, with little effort to a stabilized output voltage generate a particularly low power loss in the nominal range of Input voltage, as well as a minimal change in the output voltage via has the entire permissible input voltage range.
  • the subject of the invention is a double voltage regulator Circuit arrangement consisting of two available input voltages generates a stabilized output voltage.
  • the double voltage regulator is as Combination of two low-drop series regulator circuits designed that are symmetrical, supplied with a common reference voltage and work on a common hub.
  • the two series regulator transistors can advantageously be replaced by one Double transistor are formed in one housing.
  • the single figure shows an embodiment of the invention Circuitry.
  • the circuit arrangement consists of two identically constructed low-drop series regulator circuits (T1A, T2A, R1A, R2A and T1B, T2B, R1B, R2B) on the common buffer capacitor (C) work.
  • the circuit gets two Input voltages (UC, URDS) supplied, the first input voltage (UC) the vehicle electrical system voltage or, more generally, the Supply voltage of the control unit corresponds and the second Input voltage (URDS) one compared to the first input voltage (UC) increased voltage is that of a ballast for a gas discharge lamp is generated, for example, by the power switching converter.
  • the entire circuit arrangement is dimensioned such that the first series regulator circuit (T1A, T2A, R1A, R2A) generates a slightly higher regulator output voltage (UEA) than the second series regulator circuit (T1B, T2B, R1B, R2B).
  • This voltage difference (dUE) can be due to the symmetrical structure of the two Series regulator circuits (T1A, T2A, R1A, R2A and T1B, T2B, R1B, R2B) very small be dimensioned.
  • the nominal operating range of the control unit lies in the voltage interval from 9V to 16V, and that the value of the first Input voltage (UC) is in the range from 6V to 16V.
  • the current flows completely through the first Series regulator circuit (T1A, T2A, R1A, R2A) because the output voltage (UEB) for the second series regulator circuit (T1B, T2B, R1B, R2B) by the amount of Voltage difference (dUE) is above their control voltage and thus this completely locks.
  • a first dimensioned to UEA 9V Controller output voltage can thus supply over the full Nominal operating range of the ballast from 9V to 16V from the first Input voltage (UC) can be obtained very stably with low power loss.
  • the first series regulator circuit T1A, T2A, R1A, R2A
  • the output voltage (UE) now drops by Amount dUE until the second series regulator circuit (T1B, T2B, R1B, R2B) Stabilization from the second input voltage (URDS) takes over.
  • the Power loss at this operating point is due to the higher second Input voltage (URDS) is higher, but this is not critical, since there is only one Special operating case exists.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Dc-Dc Converters (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Direct Current Motors (AREA)
EP02002849A 2001-02-20 2002-02-08 Circuit pour un dispositif de commande pour véhicule motorisé Expired - Lifetime EP1234726B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10107808 2001-02-20
DE10107808A DE10107808A1 (de) 2001-02-20 2001-02-20 Schaltungsanordnung für ein Steuergerät in einem Kraftfahrzeug

Publications (2)

Publication Number Publication Date
EP1234726A1 true EP1234726A1 (fr) 2002-08-28
EP1234726B1 EP1234726B1 (fr) 2003-10-15

Family

ID=7674630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02002849A Expired - Lifetime EP1234726B1 (fr) 2001-02-20 2002-02-08 Circuit pour un dispositif de commande pour véhicule motorisé

Country Status (4)

Country Link
EP (1) EP1234726B1 (fr)
AT (1) ATE252006T1 (fr)
DE (2) DE10107808A1 (fr)
ES (1) ES2207624T3 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740733A1 (de) * 1987-12-01 1989-06-15 Siemens Ag Schaltungsanordnung zur begrenzung einer betriebsspannung fuer elektrische verbraucher, insbesondere in kraftfahrzeugen
DE19711364A1 (de) * 1997-03-19 1998-09-24 Bosch Gmbh Robert Spannungsstabilisator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1261596B (it) * 1993-09-30 1996-05-23 Marelli Autronica Circuito di comando per una lampada a scarica di gas, particolarmente per autoveicoli.
DE19636838C1 (de) * 1996-09-11 1998-01-15 Telefunken Microelectron Referenzspannungsumschaltung an Analog/Digitalwandlern

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740733A1 (de) * 1987-12-01 1989-06-15 Siemens Ag Schaltungsanordnung zur begrenzung einer betriebsspannung fuer elektrische verbraucher, insbesondere in kraftfahrzeugen
DE19711364A1 (de) * 1997-03-19 1998-09-24 Bosch Gmbh Robert Spannungsstabilisator

Also Published As

Publication number Publication date
ATE252006T1 (de) 2003-11-15
DE50200071D1 (de) 2003-11-20
ES2207624T3 (es) 2004-06-01
DE10107808A1 (de) 2002-09-05
EP1234726B1 (fr) 2003-10-15

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