WO2006121485A3 - Bi-directional mos current sense circuit - Google Patents

Bi-directional mos current sense circuit Download PDF

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Publication number
WO2006121485A3
WO2006121485A3 PCT/US2006/006581 US2006006581W WO2006121485A3 WO 2006121485 A3 WO2006121485 A3 WO 2006121485A3 US 2006006581 W US2006006581 W US 2006006581W WO 2006121485 A3 WO2006121485 A3 WO 2006121485A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensing
sensing devices
sense amplifier
power
current
Prior art date
Application number
PCT/US2006/006581
Other languages
French (fr)
Other versions
WO2006121485A2 (en
Inventor
Alain Chapuis
Original Assignee
Power One Inc
Alain Chapuis
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 Power One Inc, Alain Chapuis filed Critical Power One Inc
Priority to CN2006800211913A priority Critical patent/CN101198877B/en
Priority to AT06736012T priority patent/ATE484016T1/en
Priority to EP06736012A priority patent/EP1886153B1/en
Priority to DE602006017362T priority patent/DE602006017362D1/en
Publication of WO2006121485A2 publication Critical patent/WO2006121485A2/en
Publication of WO2006121485A3 publication Critical patent/WO2006121485A3/en

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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
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Nonlinear Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Electronic Switches (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Semiconductor Integrated Circuits (AREA)

Abstract

A current sensing circuit comprises a power device (42) adapted to conduct a bidirectional current between first and second terminals thereof, first and second sensing devices (44,46) operatively coupled to the power device (42), a sense amplifier (48) providing first and second voltages to the first and second sensing devices (44,46), and a gate drive device providing activating signals to the power switching device (42) and the first and second sensing devices (44,46). The first and second sensing devices (44,46) each has an active are that is substantially identical and significantly smaller than a corresponding active area of the power switching device (42). The sense amplifier (48) measures the voltage of the first sensing device (44) and maintains the voltage on the second sensing device (46) at the same level as the first sensing device (44) by injecting an additional current into the second sensing device (46). The sense amplifier (48) further provides an output signal proportional to the bidirectional current. The first and second sensing devices (44,46) have k times higher resistance than a corresponding resistance of the power device (42) when in an active state.
PCT/US2006/006581 2005-05-10 2006-02-22 Bi-directional mos current sense circuit WO2006121485A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2006800211913A CN101198877B (en) 2005-05-10 2006-02-22 Bi-directional mos current sense circuit
AT06736012T ATE484016T1 (en) 2005-05-10 2006-02-22 BIDIRECTIONAL MOS CURRENT MEASUREMENT CIRCUIT
EP06736012A EP1886153B1 (en) 2005-05-10 2006-02-22 Bi-directional mos current sense circuit
DE602006017362T DE602006017362D1 (en) 2005-05-10 2006-02-22 BIDIRECTIONAL MOS POWER CIRCUIT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/126,429 US7327149B2 (en) 2005-05-10 2005-05-10 Bi-directional MOS current sense circuit
US11/126,429 2005-05-10

Publications (2)

Publication Number Publication Date
WO2006121485A2 WO2006121485A2 (en) 2006-11-16
WO2006121485A3 true WO2006121485A3 (en) 2007-04-26

Family

ID=37397017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/006581 WO2006121485A2 (en) 2005-05-10 2006-02-22 Bi-directional mos current sense circuit

Country Status (7)

Country Link
US (1) US7327149B2 (en)
EP (1) EP1886153B1 (en)
KR (1) KR100971056B1 (en)
CN (1) CN101198877B (en)
AT (1) ATE484016T1 (en)
DE (1) DE602006017362D1 (en)
WO (1) WO2006121485A2 (en)

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US8937467B2 (en) 2013-03-08 2015-01-20 Analog Devices Technology Apparatus and methods for switching regulator current sensing
US9046905B2 (en) 2013-03-08 2015-06-02 Analog Devices Global Apparatus and methods for bidirectional current sensing in a switching regulator
US9791480B2 (en) 2013-05-21 2017-10-17 Analog Devices Global Current sensing of switching power regulators
US9429598B2 (en) * 2014-06-30 2016-08-30 Infineon Technologies Ag Current measurement and control of a semiconductor element based on the current measurement in a power semiconductor arrangement
US9791881B2 (en) * 2014-07-22 2017-10-17 Infineon Technologies Austria Ag Self-driven synchronous rectification for a power converter
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US9826291B2 (en) * 2015-10-09 2017-11-21 Avago Technologies General Ip (Singapore) Pte. Ltd. Low distortion single-to-differential wide-band variable gain amplifier for optical communications
US10156592B2 (en) * 2015-12-30 2018-12-18 Nxp Usa, Inc. Current sensing circuit and method
US10038378B2 (en) * 2016-09-21 2018-07-31 Qualcomm Incorporated Device and method to stabilize a supply voltage
US10852329B2 (en) * 2017-10-30 2020-12-01 Microchip Technology Incorporated High precision current sensing using sense amplifier with digital AZ offset compensation
TWI664814B (en) * 2017-11-03 2019-07-01 尼克森微電子股份有限公司 One-direction conduction device
JP6805192B2 (en) * 2018-02-06 2020-12-23 株式会社東芝 Current detection circuit
US10461629B2 (en) * 2018-02-19 2019-10-29 Texas Instruments Incorporated System and apparatus to provide current compensation
CN113125830B (en) * 2019-12-30 2023-06-09 圣邦微电子（北京）股份有限公司 Bidirectional current detection circuit and power supply system
CN113252970B (en) * 2021-04-23 2022-11-18 长城电源技术有限公司 Load detection circuit and power supply system

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US20060255783A1 (en) 2006-11-16
CN101198877B (en) 2011-05-04
KR100971056B1 (en) 2010-07-20
KR20080009156A (en) 2008-01-24
CN101198877A (en) 2008-06-11
EP1886153A4 (en) 2009-05-27
ATE484016T1 (en) 2010-10-15
DE602006017362D1 (en) 2010-11-18
EP1886153B1 (en) 2010-10-06
EP1886153A2 (en) 2008-02-13
US7327149B2 (en) 2008-02-05
WO2006121485A2 (en) 2006-11-16

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