EP0678963A3 - Method and apparatus for controlling the power consumption of an electronic device. - Google Patents

Method and apparatus for controlling the power consumption of an electronic device. Download PDF

Info

Publication number
EP0678963A3
EP0678963A3 EP95302570A EP95302570A EP0678963A3 EP 0678963 A3 EP0678963 A3 EP 0678963A3 EP 95302570 A EP95302570 A EP 95302570A EP 95302570 A EP95302570 A EP 95302570A EP 0678963 A3 EP0678963 A3 EP 0678963A3
Authority
EP
European Patent Office
Prior art keywords
voltage regulator
electronic device
power consumption
slower mode
differential amplifier
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.)
Granted
Application number
EP95302570A
Other languages
German (de)
French (fr)
Other versions
EP0678963A2 (en
EP0678963B1 (en
Inventor
Markku Lehikoinen
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.)
Nokia Oyj
Original Assignee
Nokia Mobile Phones Ltd
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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Publication of EP0678963A2 publication Critical patent/EP0678963A2/en
Publication of EP0678963A3 publication Critical patent/EP0678963A3/en
Application granted granted Critical
Publication of EP0678963B1 publication Critical patent/EP0678963B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Abstract

The invention relates to a method for reducing power consumption of an electronic device comprising at least one voltage regulator. The regulating loop of at least one voltage regulator of the electronic device is controlled into a slower mode during periods when normal voltage regulator accuracy is not required, this period being known by the electronic device. The voltage regulator loop is controlled into a slower mode by switching the slew rate into a slower mode with the aid of an auxiliary input (SLEEP) arranged in the voltage regulator's differential amplifier (2) and by decreasing the current flowing through the differential amplifier. The invention is applicable in different electronic devices, particularly in battery powered devices in order to increase the operational time of the battery. For instance, in order to reduce the power consumption the voltage regulator of a mobile telephone can be switched into a slower mode between the control channel messages received from a base station. <IMAGE>
EP95302570A 1994-04-18 1995-04-18 Method and apparatus for controlling the power consumption of an electronic device Expired - Lifetime EP0678963B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI941790 1994-04-18
FI941790A FI96153C (en) 1994-04-18 1994-04-18 A method for reducing the power consumption of an electrical device with a voltage regulator, and a voltage regulator-equipped electrical device that saves electric power

Publications (3)

Publication Number Publication Date
EP0678963A2 EP0678963A2 (en) 1995-10-25
EP0678963A3 true EP0678963A3 (en) 1996-11-06
EP0678963B1 EP0678963B1 (en) 1999-09-08

Family

ID=8540543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95302570A Expired - Lifetime EP0678963B1 (en) 1994-04-18 1995-04-18 Method and apparatus for controlling the power consumption of an electronic device

Country Status (5)

Country Link
EP (1) EP0678963B1 (en)
JP (1) JPH0869330A (en)
AT (1) ATE184431T1 (en)
DE (1) DE69511930T2 (en)
FI (1) FI96153C (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6081733A (en) * 1997-04-16 2000-06-27 Motorola, Inc. Communication control apparatus and method
JP2000066745A (en) * 1998-08-26 2000-03-03 New Japan Radio Co Ltd Constant voltage regulator circuit
FR2807846A1 (en) 2000-04-12 2001-10-19 St Microelectronics Sa LOW POWER CONSUMPTION VOLTAGE REGULATOR
JP3755585B2 (en) * 2001-05-11 2006-03-15 セイコーエプソン株式会社 Display controller, display unit, and electronic device
DE10223772A1 (en) * 2002-05-28 2003-12-18 Infineon Technologies Ag Circuit for voltage converter used in e.g. system ICs or components, e.g. a CAN transceiver and/or microcontroller for a vehicular system, includes regulator with control input which is cycled on and off in accordance with state signal
JP2006079301A (en) * 2004-09-09 2006-03-23 Denso Corp Power supply circuit
CN100388149C (en) * 2004-12-23 2008-05-14 凌阳科技股份有限公司 Voltage stabilizer with low stood by consumption current

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142219A (en) * 1991-05-01 1992-08-25 Winbond Electronics North America Corporation Switchable current-reference voltage generator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142219A (en) * 1991-05-01 1992-08-25 Winbond Electronics North America Corporation Switchable current-reference voltage generator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"LOW DISSIPATION REGULATOR", ELEKTOR ELECTRONICS, vol. 15, no. 169, July 1989 (1989-07-01), pages 23, XP000050083 *

Also Published As

Publication number Publication date
EP0678963A2 (en) 1995-10-25
DE69511930T2 (en) 2000-03-09
FI941790A0 (en) 1994-04-18
FI96153C (en) 1996-05-10
DE69511930D1 (en) 1999-10-14
FI941790A (en) 1995-10-19
JPH0869330A (en) 1996-03-12
FI96153B (en) 1996-01-31
ATE184431T1 (en) 1999-09-15
EP0678963B1 (en) 1999-09-08

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