WO2005008353A3 - Method and apparatus for current limitation in voltage regulators - Google Patents

Method and apparatus for current limitation in voltage regulators Download PDF

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Publication number
WO2005008353A3
WO2005008353A3 PCT/US2004/021205 US2004021205W WO2005008353A3 WO 2005008353 A3 WO2005008353 A3 WO 2005008353A3 US 2004021205 W US2004021205 W US 2004021205W WO 2005008353 A3 WO2005008353 A3 WO 2005008353A3
Authority
WO
WIPO (PCT)
Prior art keywords
current
power
supply voltage
sense
coupled
Prior art date
Application number
PCT/US2004/021205
Other languages
French (fr)
Other versions
WO2005008353A2 (en
Inventor
Gian Marco Bo
Massimo Mazzucco
Original Assignee
Atmel Corp
Gian Marco Bo
Massimo Mazzucco
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
Priority claimed from IT000533A external-priority patent/ITTO20030533A1/en
Application filed by Atmel Corp, Gian Marco Bo, Massimo Mazzucco filed Critical Atmel Corp
Priority to EP04756530A priority Critical patent/EP1652018A4/en
Publication of WO2005008353A2 publication Critical patent/WO2005008353A2/en
Publication of WO2005008353A3 publication Critical patent/WO2005008353A3/en

Links

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
    • G05F1/565—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A circuit for limiting a power current from a power-controlling pass device, the power-controlling pass device being coupled to a supply voltage, comprises the following. A sense device is coupled to the supply voltage with the sense device being configured to draw a sense current that is proportional to the power current. A current mirror is coupled to the sense device and the supply voltage through a low impedance node, the current mirror being configured to draw a mirror current through the low impedance node that is relative to the sense current. A limiting device is coupled to the supply voltage, the power-controlling pass device, and the low impedance node, the limiting device being configured to limit the power current according to a voltage difference between the low impedance node and the supply voltage.
PCT/US2004/021205 2003-07-10 2004-06-30 Method and apparatus for current limitation in voltage regulators WO2005008353A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04756530A EP1652018A4 (en) 2003-07-10 2004-06-30 Method and apparatus for current limitation in voltage regulators

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT000533A ITTO20030533A1 (en) 2003-07-10 2003-07-10 PROCEDURE AND CIRCUIT FOR CURRENT LIMITATION IN
ITTO2003A000533 2003-07-10
US10/867,935 2004-06-14
US10/867,935 US20050007189A1 (en) 2003-07-10 2004-06-14 Method and apparatus for current limitation in voltage regulators

Publications (2)

Publication Number Publication Date
WO2005008353A2 WO2005008353A2 (en) 2005-01-27
WO2005008353A3 true WO2005008353A3 (en) 2005-06-09

Family

ID=34082163

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/021205 WO2005008353A2 (en) 2003-07-10 2004-06-30 Method and apparatus for current limitation in voltage regulators

Country Status (2)

Country Link
EP (1) EP1652018A4 (en)
WO (1) WO2005008353A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7173405B2 (en) * 2003-07-10 2007-02-06 Atmel Corporation Method and apparatus for current limitation in voltage regulators with improved circuitry for providing a control voltage
US7615977B2 (en) * 2006-05-15 2009-11-10 Stmicroelectronics S.A. Linear voltage regulator and method of limiting the current in such a regulator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6580257B2 (en) * 2001-09-25 2003-06-17 Stmicroelectronics S.A. Voltage regulator incorporating a stabilization resistor and a circuit for limiting the output current
US20040051508A1 (en) * 2000-12-29 2004-03-18 Cecile Hamon Voltage regulator with enhanced stability
US6801419B2 (en) * 2001-07-13 2004-10-05 Seiko Instruments Inc. Overcurrent protection circuit for voltage regulator
US6804102B2 (en) * 2001-01-19 2004-10-12 Stmicroelectronics S.A. Voltage regulator protected against short-circuits by current limiter responsive to output voltage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341345C2 (en) * 1983-11-15 1987-01-02 SGS-ATES Deutschland Halbleiter-Bauelemente GmbH, 8018 Grafing Longitudinal voltage regulator
JP3782726B2 (en) * 2001-12-13 2006-06-07 株式会社リコー Overcurrent protection circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040051508A1 (en) * 2000-12-29 2004-03-18 Cecile Hamon Voltage regulator with enhanced stability
US6804102B2 (en) * 2001-01-19 2004-10-12 Stmicroelectronics S.A. Voltage regulator protected against short-circuits by current limiter responsive to output voltage
US6801419B2 (en) * 2001-07-13 2004-10-05 Seiko Instruments Inc. Overcurrent protection circuit for voltage regulator
US6580257B2 (en) * 2001-09-25 2003-06-17 Stmicroelectronics S.A. Voltage regulator incorporating a stabilization resistor and a circuit for limiting the output current

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1652018A4 *

Also Published As

Publication number Publication date
WO2005008353A2 (en) 2005-01-27
EP1652018A2 (en) 2006-05-03
EP1652018A4 (en) 2007-12-05

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