EP1234726A1 - Schaltungsanordnung für ein Steuergerät in einem Kraftfahrzeug - Google Patents
Schaltungsanordnung für ein Steuergerät in einem Kraftfahrzeug Download PDFInfo
- 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
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
- G05F1/56—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)
- Continuous-Control Power Sources That Use Transistors (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Direct Current Motors (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
- C
- Pufferkondensator
- D1A, D1B
- Doppeldiode
- dUE
- Spannungsdifferenz
- UC
- erste Eingangsspannung
- UE
- Ausgangsspannung
- UEA
- erste Reglerausgangsspannung
- UEB
- zweite Reglerausgangsspannung
- UR
- Referenzspannung
- URDS
- zweite Eingangsspannung
- R3
- Vorwiderstand
- T1A
- erster Längsreglertransistor
- T1 B
- zweiter Längsreglertransistor
- T1A, T2A, R1A, R2A
- erste Längsreglerschaltung
- T1B, T2B, R1B, R2B
- zweite Längsreglerschaltung
- ZD
- Z-Diode
Claims (5)
- Schaltungsanordnung für ein Steuergerät in einem Kraftfahrzeug zur Erzeugung einer stabilisierten Ausgangsspannung (UE) aus zwei Eingangsspannungen (UC, URDS), wobei der Toleranzbereich der ersten Eingangsspannung (UC) den Wert der Ausgangsspannung (UE) unterschreiten kann und der Wert der zweiten Eingangsspannung (URDS) mindestens dem Wert der Ausgangsspannung (UE) entspricht,
welche zwei symmetrisch aufgebaute Längsreglerschaltungen (T1A, T2A, R1A, R2A; T1B, T2B, R1B, R2B) beinhaltet, die mit einer gemeinsamen Referenzspannung (UR) versorgt werden und die ihre Reglerausgangsspannungen (UEA, UEB) einem gemeinsamen Pufferkondensator (C) zuführen, an dem die Ausgangsspannung (UE) abgreifbar ist,
und wobei die erste Reglerausgangsspannung (UEA) höher ist als die zweite Reglerausgangsspannung (UEB). - Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden in den Längsreglerschaltungen (T1A, T2A, R1A, R2A; T1B, T2B, R1B, R2B) enthaltenden Längsreglertransistoren (T1A, T1B) durch einen Doppeltransistor ausgebildet sind.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die erste Eingangsspannung (UC) die Bordnetzspannung des Kraftfahrzeugs ist.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Eingangsspannung (URDS) eine durch das Steuergerät aus der Bordnetzspannung des Kraftfahrzeugs generierte Spannung ist, deren Wert höher ist als der Wert der Bordnetzspannung.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß das Steuergerät ein Vorschaltgerät für einen Hochdruckgasentladungslampe ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10107808A DE10107808A1 (de) | 2001-02-20 | 2001-02-20 | Schaltungsanordnung für ein Steuergerät in einem Kraftfahrzeug |
DE10107808 | 2001-02-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1234726A1 true EP1234726A1 (de) | 2002-08-28 |
EP1234726B1 EP1234726B1 (de) | 2003-10-15 |
Family
ID=7674630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02002849A Expired - Lifetime EP1234726B1 (de) | 2001-02-20 | 2002-02-08 | Schaltungsanordnung für ein Steuergerät in einem Kraftfahrzeug |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1234726B1 (de) |
AT (1) | ATE252006T1 (de) |
DE (2) | DE10107808A1 (de) |
ES (1) | ES2207624T3 (de) |
Citations (2)
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)
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 |
-
2001
- 2001-02-20 DE DE10107808A patent/DE10107808A1/de not_active Withdrawn
-
2002
- 2002-02-08 AT AT02002849T patent/ATE252006T1/de not_active IP Right Cessation
- 2002-02-08 ES ES02002849T patent/ES2207624T3/es not_active Expired - Lifetime
- 2002-02-08 DE DE50200071T patent/DE50200071D1/de not_active Expired - Lifetime
- 2002-02-08 EP EP02002849A patent/EP1234726B1/de not_active Expired - Lifetime
Patent Citations (2)
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 |
DE10107808A1 (de) | 2002-09-05 |
EP1234726B1 (de) | 2003-10-15 |
DE50200071D1 (de) | 2003-11-20 |
ES2207624T3 (es) | 2004-06-01 |
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