AU2002224382A1 - System and method for current sensing - Google Patents

System and method for current sensing

Info

Publication number
AU2002224382A1
AU2002224382A1 AU2002224382A AU2438202A AU2002224382A1 AU 2002224382 A1 AU2002224382 A1 AU 2002224382A1 AU 2002224382 A AU2002224382 A AU 2002224382A AU 2438202 A AU2438202 A AU 2438202A AU 2002224382 A1 AU2002224382 A1 AU 2002224382A1
Authority
AU
Australia
Prior art keywords
switch
amplifier
voltage
current sensing
resistive elements
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.)
Abandoned
Application number
AU2002224382A
Inventor
Ryan Goodfellow
David Susak
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.)
Primarion Inc
Original Assignee
Primarion Inc
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 Primarion Inc filed Critical Primarion Inc
Publication of AU2002224382A1 publication Critical patent/AU2002224382A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
    • G01R19/16519—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using FET's
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Amplifiers (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

A system and method for current sensing which is substantially consistent over device, temperature, and process variations is provided. A current sensing system includes a first switch coupled to one or more variable resistive elements. The resistive elements being configured to scale down the voltage across the first switch which is provided to an input of an amplifier. The amplifier is coupled to the resistive elements and the second switch and is configured to sense the voltage across the first switch, and force the voltage across the second switch to be equal to the first switch scaled down voltage. Thus, a current of known proportion can be provided at the output of the amplifier. A driver and timing circuit may be provided to prevent the amplifier from providing an excessive slewing of current during the off period.
AU2002224382A 2000-10-13 2001-10-15 System and method for current sensing Abandoned AU2002224382A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US24033900P 2000-10-13 2000-10-13
US60/240,339 2000-10-13
PCT/US2001/032240 WO2002031517A2 (en) 2000-10-13 2001-10-15 System and method for current sensing

Publications (1)

Publication Number Publication Date
AU2002224382A1 true AU2002224382A1 (en) 2002-04-22

Family

ID=22906128

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002224382A Abandoned AU2002224382A1 (en) 2000-10-13 2001-10-15 System and method for current sensing

Country Status (8)

Country Link
US (1) US6559684B2 (en)
EP (1) EP1360511B1 (en)
JP (1) JP2004516458A (en)
AT (1) ATE294397T1 (en)
AU (1) AU2002224382A1 (en)
DE (1) DE60110466D1 (en)
TW (1) TW531647B (en)
WO (1) WO2002031517A2 (en)

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Also Published As

Publication number Publication date
WO2002031517A3 (en) 2003-08-28
US20020158615A1 (en) 2002-10-31
US6559684B2 (en) 2003-05-06
ATE294397T1 (en) 2005-05-15
WO2002031517A2 (en) 2002-04-18
TW531647B (en) 2003-05-11
JP2004516458A (en) 2004-06-03
DE60110466D1 (en) 2005-06-02
EP1360511A2 (en) 2003-11-12
EP1360511B1 (en) 2005-04-27

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