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EP1310852A3 - System with a current source and associated serial switch - Google Patents

System with a current source and associated serial switch Download PDF

Info

Publication number
EP1310852A3
EP1310852A3 EP02018983A EP02018983A EP1310852A3 EP 1310852 A3 EP1310852 A3 EP 1310852A3 EP 02018983 A EP02018983 A EP 02018983A EP 02018983 A EP02018983 A EP 02018983A EP 1310852 A3 EP1310852 A3 EP 1310852A3
Authority
EP
European Patent Office
Prior art keywords
current source
switch
serial switch
associated serial
power source
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Withdrawn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
EP02018983A
Other languages
German (de)
French (fr)
Other versions
EP1310852A2 (en
Inventor
Volkmar Rebmann
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.)
Infineon Technologies AG
Original Assignee
Infineon Technologies AG
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 Infineon Technologies AG filed Critical Infineon Technologies AG
Publication of EP1310852A2 publication Critical patent/EP1310852A2/en
Publication of EP1310852A3 publication Critical patent/EP1310852A3/en
Withdrawn legal-status Critical Current

Links

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
    • G05F3/242—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 with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Electronic Switches (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Die beschriebene Anordnung zeichnet sich dadurch aus, daß sie eine Steuereinrichtung enthält, welche dafür sorgt, daß das Potential, das sich bei geöffnetem Schalter am stromquellenseitigen Anschluß desselben einstellt, den Wert aufweist, den es aufweisen würde, wenn der Schalter bei ansonsten unveränderten Bedingungen geschlossen wäre und von dem von der Stromquelle abgegebenen Strom durchflossen werden würde. Dadurch kann erreicht werden, daß der von der Anordnung ausgegebene Strom stets, insbesondere auch bereits unmittelbar nach dem Schließen der Schalter P2 und N1 wunschgemäß groß ist, genauer gesagt exakt der von den Stromquellen P1 bzw. N2 abgegebene Strom ist.

Figure 00000001
The arrangement described is characterized in that it contains a control device which ensures that the potential which arises when the switch is open at the power source-side connection thereof has the value which it would have if the switch were closed under otherwise unchanged conditions would be and would be flowed through by the current supplied by the power source. It can thereby be achieved that the current output by the arrangement is always as desired, in particular also immediately after the switches P2 and N1 are closed, more precisely exactly the current output by the current sources P1 and N2.
Figure 00000001
EP02018983A 2001-09-13 2002-08-27 System with a current source and associated serial switch Withdrawn EP1310852A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10145034 2001-09-13
DE10145034A DE10145034B4 (en) 2001-09-13 2001-09-13 Arrangement with a power source and a switch connected in series to this

Publications (2)

Publication Number Publication Date
EP1310852A2 EP1310852A2 (en) 2003-05-14
EP1310852A3 true EP1310852A3 (en) 2004-10-13

Family

ID=7698838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02018983A Withdrawn EP1310852A3 (en) 2001-09-13 2002-08-27 System with a current source and associated serial switch

Country Status (3)

Country Link
US (1) US6657479B2 (en)
EP (1) EP1310852A3 (en)
DE (1) DE10145034B4 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268345A2 (en) * 1986-11-20 1988-05-25 Industrial Technology Research Institute Matching current source
US6025792A (en) * 1998-01-23 2000-02-15 Intel Corporation Analog compensation circuitry for integrated circuit input/output circuitry
US6124741A (en) * 1999-03-08 2000-09-26 Pericom Semiconductor Corp. Accurate PLL charge pump with matched up/down currents from Vds-compensated common-gate switches
US6160432A (en) * 1999-04-30 2000-12-12 Conexant Systems, Inc. Source-switched or gate-switched charge pump having cascoded output

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7405441A (en) * 1974-04-23 1975-10-27 Philips Nv ACCURATE POWER SOURCE SWITCHING.
DE3565328D1 (en) * 1984-07-16 1988-11-03 Siemens Ag Integrated constant-current source
US6124754A (en) * 1999-04-30 2000-09-26 Intel Corporation Temperature compensated current and voltage reference circuit
US6316987B1 (en) * 1999-10-22 2001-11-13 Velio Communications, Inc. Low-power low-jitter variable delay timing circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268345A2 (en) * 1986-11-20 1988-05-25 Industrial Technology Research Institute Matching current source
US6025792A (en) * 1998-01-23 2000-02-15 Intel Corporation Analog compensation circuitry for integrated circuit input/output circuitry
US6124741A (en) * 1999-03-08 2000-09-26 Pericom Semiconductor Corp. Accurate PLL charge pump with matched up/down currents from Vds-compensated common-gate switches
US6160432A (en) * 1999-04-30 2000-12-12 Conexant Systems, Inc. Source-switched or gate-switched charge pump having cascoded output

Also Published As

Publication number Publication date
DE10145034A1 (en) 2003-04-03
DE10145034B4 (en) 2005-04-21
US6657479B2 (en) 2003-12-02
US20030048127A1 (en) 2003-03-13
EP1310852A2 (en) 2003-05-14

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