EP0810505B1 - Schaltungsanordnung zum Erzeugen eines Widerstandsverhaltens mit einstellbarem positiven Temperaturkoeffizienten, sowie Verwendung dieser Schaltungsanordnung - Google Patents
Schaltungsanordnung zum Erzeugen eines Widerstandsverhaltens mit einstellbarem positiven Temperaturkoeffizienten, sowie Verwendung dieser Schaltungsanordnung Download PDFInfo
- Publication number
- EP0810505B1 EP0810505B1 EP97108343A EP97108343A EP0810505B1 EP 0810505 B1 EP0810505 B1 EP 0810505B1 EP 97108343 A EP97108343 A EP 97108343A EP 97108343 A EP97108343 A EP 97108343A EP 0810505 B1 EP0810505 B1 EP 0810505B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- circuit arrangement
- temperature coefficient
- resistance
- resistance element
- 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.)
- Expired - Lifetime
Links
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Images
Classifications
-
- 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
- G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/24—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S323/00—Electricity: power supply or regulation systems
- Y10S323/907—Temperature compensation of semiconductor
Definitions
- the invention relates to a circuit arrangement for generating resistance behavior with adjustable positive temperature coefficient as well as the use of this circuit arrangement in a current mirror circuit.
- a temperature compensation circuit with a fixed compensation behavior is for example from Tietze / Schenk, semiconductor circuit technology, Springer-Verlag, 9th edition, chapter 4.6.3 known. In doing so, one in the input current path simple current mirror switched a diode that the temperature effect compensated for the transistor in the output current path. However, the compensation is determined by the choice of the diode.
- the object of the invention is to provide compensation means with changeable specify positive temperature coefficients.
- the circuit arrangement according to the invention preferably has a series connection of a first ohmic resistance element and a diode element that has a second ohmic Resistor element is connected in parallel, the value of the second ohmic resistance element corresponding to the desired one Temperature coefficient is set.
- a preferred current mirror circuit has in its Input current path one from a first and a second ohmic resistance element and from a diode element existing circuitry.
- the circuit arrangement fed by an input current and the on their falling voltage the base-emitter path of a transistor fed.
- In the emitter line of the transistor is an emitter resistance element that has the same value like the first ohmic resistance element of the circuit arrangement, inserted.
- the output current of the current mirror circuit can be tapped at the collector of the transistor.
- the circuit arrangement according to the invention exists from an ohmic resistor 1 and one to it diode 3 connected in series in the forward direction.
- the series connection of resistor 1 and diode 3 is an ohmic Resistor 2 connected in parallel, resistor 2 being adjustable is.
- One in the circuit arrangement according to the invention injected current I generates a voltage U across the Circuit arrangement. Overall, this results in resistance behavior of the entire circuit arrangement, the Resistance value with positive Coefficient depends on the temperature.
- the one from that Current I and the temperature-dependent voltage I can, for example for further control, for example one Serve driver circuit, which in turn a to be supplied Component such as LEDs, etc. supplied.
- the invention Circuit arrangement used in a current mirror circuit in which the circuit arrangement according to the invention the resistors 1 and 2 and the diode 3 the input circuit the current mirror circuit forms while a transistor 5 in Connection with an emitter resistor 4 the output circuit represents.
- the base of transistor 5 is at the node connected by first and second resistance while the emitter of transistor 5 with the interposition of the Emitter resistor 4 with the node of diode 3 and resistor 2 is connected.
- the conductivity type of transistor 5 is selected according to the polarity of the diode 3.
- An output current Q can be tapped off the collector the current I one adjustable by means of the resistor 2 Has temperature coefficient.
- the node from diode 3, resistor 2 and emitter resistor 4 on a reference potential M can be connected to defined potential relationships to achieve.
- the resistance value R of the first resistor 1 and the emitter resistor 4 are chosen to be the same size.
- the value of resistance For example, 2 can be between infinity and four times the value of resistor 1 can be selected.
- the temperature coefficient is 0.3 % / K, while for four times the resistance value of the resistor 1 gives a temperature coefficient of 1% / K.
- General temperature responses can be realized that a Have coefficients greater than 100% / TW, where T for the absolute temperature and W stands for resistance.
- the advantages of the circuit arrangement according to the invention lie in a minimal component requirement, an easy adjustability the temperature coefficient, the high level of integration, minimal aging and large compensation, Voltage and temperature ranges.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
- Led Devices (AREA)
- Semiconductor Integrated Circuits (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
Claims (2)
- Schaltungsanordnung zum Erzeugen eines Widerstandsverhaltens mit einstellbarem positiven Temperaturkoeffizienten, mit einer Reihenschaltung aus einem ersten ohmschen Widerstandselement (1) und einem Diodenelement (3),
dadurch gekennzeichnet, daß
der Reihenschaltung ein zweites ohmsches Widerstandselement (2) parallel geschaltet ist, wobei der Wert des zweiten ohmschen Widerstandselements (2) entsprechend dem gewünschten Temperaturkoeffizienten einstellbar ist. - Verwendung der Schaltungsanordnung nach Anspruch 1 in einer Stromspiegelschaltung, bei der ein Eingangsstrom (I) die Schaltungsanordnung speist, dadurch gekennzeichnet, daß die an ihr abfallende Spannung (U) der Basis-Emitter-Strecke eines Transistors (5) zugeführt wird, der Ausgangsstrom (Q) am Kollektor des Transistors (5) abgreifbar ist und ein Emitterwiderstandselement (4) am Emitter-Anschluß des Transistor (5) den gleichen Wert aufweist wie das erste ohmsche Widerstandselement (1) der Schaltungsanordnung.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19621749 | 1996-05-30 | ||
DE19621749A DE19621749C2 (de) | 1996-05-30 | 1996-05-30 | Schaltungsanordnung zum Erzeugen eines Widerstandsverhaltens mit einstellbarem positiven Temperaturkoeffizienten sowie Verwendung dieser Schaltungsanordnung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0810505A2 EP0810505A2 (de) | 1997-12-03 |
EP0810505A3 EP0810505A3 (de) | 1998-04-22 |
EP0810505B1 true EP0810505B1 (de) | 1999-07-28 |
Family
ID=7795705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97108343A Expired - Lifetime EP0810505B1 (de) | 1996-05-30 | 1997-05-22 | Schaltungsanordnung zum Erzeugen eines Widerstandsverhaltens mit einstellbarem positiven Temperaturkoeffizienten, sowie Verwendung dieser Schaltungsanordnung |
Country Status (3)
Country | Link |
---|---|
US (1) | US6121763A (de) |
EP (1) | EP0810505B1 (de) |
DE (2) | DE19621749C2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004062357A1 (de) | 2004-12-14 | 2006-07-06 | Atmel Germany Gmbh | Versorgungsschaltung zur Erzeugung eines Referenzstroms mit vorgebbarer Temperaturabhängigkeit |
US20120326185A1 (en) * | 2006-12-22 | 2012-12-27 | Epistar Corporation | Light emitting device |
DE102009003632B4 (de) * | 2009-03-17 | 2013-05-16 | Lear Corporation Gmbh | Verfahren und Schaltungsanordnung zur Ansteuerung einer Last |
DE102017107412A1 (de) * | 2017-04-06 | 2018-10-11 | Lisa Dräxlmaier GmbH | Schaltungsanordnung, beleuchtungsanordnung und verfahren |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3956661A (en) * | 1973-11-20 | 1976-05-11 | Tokyo Sanyo Electric Co., Ltd. | D.C. power source with temperature compensation |
DE2938849C2 (de) * | 1978-09-27 | 1993-11-25 | Analog Devices Inc | Anordnung zur Erzeugung einer temperaturkompensierten Gleichspannung |
US4243948A (en) * | 1979-05-08 | 1981-01-06 | Rca Corporation | Substantially temperature-independent trimming of current flows |
US4313082A (en) * | 1980-06-30 | 1982-01-26 | Motorola, Inc. | Positive temperature coefficient current source and applications |
DE3137504A1 (de) * | 1981-09-21 | 1983-04-07 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur erzeugung einer temperaturunabhaengigen referenzspannung |
JPS5922433A (ja) * | 1982-07-29 | 1984-02-04 | Toshiba Corp | 温度補償用回路 |
US4736126A (en) * | 1986-12-24 | 1988-04-05 | Motorola Inc. | Trimmable current source |
US4882533A (en) * | 1987-08-28 | 1989-11-21 | Unitrode Corporation | Linear integrated circuit voltage drop generator having a base-10-emitter voltage independent current source therein |
US4956567A (en) * | 1989-02-13 | 1990-09-11 | Texas Instruments Incorporated | Temperature compensated bias circuit |
US5198701A (en) * | 1990-12-24 | 1993-03-30 | Davies Robert B | Current source with adjustable temperature variation |
JP3266177B2 (ja) * | 1996-09-04 | 2002-03-18 | 住友電気工業株式会社 | 電流ミラー回路とそれを用いた基準電圧発生回路及び発光素子駆動回路 |
-
1996
- 1996-05-30 DE DE19621749A patent/DE19621749C2/de not_active Expired - Fee Related
-
1997
- 1997-05-22 EP EP97108343A patent/EP0810505B1/de not_active Expired - Lifetime
- 1997-05-22 DE DE59700279T patent/DE59700279D1/de not_active Expired - Lifetime
- 1997-05-30 US US08/866,415 patent/US6121763A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59700279D1 (de) | 1999-09-02 |
DE19621749C2 (de) | 1998-07-16 |
DE19621749A1 (de) | 1997-12-04 |
EP0810505A3 (de) | 1998-04-22 |
US6121763A (en) | 2000-09-19 |
EP0810505A2 (de) | 1997-12-03 |
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