CA2063250A1 - Power Supply and Oscillator for a Computer System Providing Automatic Selection of Supply Voltage and Frequency - Google Patents

Power Supply and Oscillator for a Computer System Providing Automatic Selection of Supply Voltage and Frequency

Info

Publication number
CA2063250A1
CA2063250A1 CA2063250A CA2063250A CA2063250A1 CA 2063250 A1 CA2063250 A1 CA 2063250A1 CA 2063250 A CA2063250 A CA 2063250A CA 2063250 A CA2063250 A CA 2063250A CA 2063250 A1 CA2063250 A1 CA 2063250A1
Authority
CA
Canada
Prior art keywords
frequency
computer
supply voltage
computer system
oscillator
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
CA2063250A
Other languages
French (fr)
Other versions
CA2063250C (en
Inventor
John P. Fairbanks
Andy C. Yuan
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.)
Fujitsu Personal Systems Inc
Original Assignee
John P. Fairbanks
Andy C. Yuan
Poqet Computer Corporation
Fujitsu Personal Systems, 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 John P. Fairbanks, Andy C. Yuan, Poqet Computer Corporation, Fujitsu Personal Systems, Inc. filed Critical John P. Fairbanks
Publication of CA2063250A1 publication Critical patent/CA2063250A1/en
Application granted granted Critical
Publication of CA2063250C publication Critical patent/CA2063250C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/324—Power saving characterised by the action undertaken by lowering clock frequency
    • 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
    • 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
    • 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
    • G05F1/62—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using bucking or boosting dc sources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/08—Clock generators with changeable or programmable clock frequency
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/3296—Power saving characterised by the action undertaken by lowering the supply or operating voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • 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
    • H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Disclosed is a power system (13) for use with a computer, the power system (13) having incorporated in it circuitry for auto-matically varying the supply voltage (VDD) output to the computer system based upon the magnitude of the current being suppli-ed to the computer by the power system. Also included in the computer system is a variable frequency clock circuit, the frequency of which changes based upon the supply voltage (VDD) produced by the power system (13). This permits, during computer sys-tem operation where low voltage and low clock speeds will be sufficient to provide the performance needed achievement of a power saving since both the voltage and frequency at which the system operates is reduced, thereby markedly reducing the power consumption.
CA 2063250 1989-06-30 1990-06-28 Power supply and oscillator for a computer system providing automatic selection of supply voltage and frequency Expired - Fee Related CA2063250C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/374,514 US5021679A (en) 1989-06-30 1989-06-30 Power supply and oscillator for a computer system providing automatic selection of supply voltage and frequency
US374,514 1989-06-30

Publications (2)

Publication Number Publication Date
CA2063250A1 true CA2063250A1 (en) 1990-12-31
CA2063250C CA2063250C (en) 1997-04-01

Family

ID=23477167

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2063250 Expired - Fee Related CA2063250C (en) 1989-06-30 1990-06-28 Power supply and oscillator for a computer system providing automatic selection of supply voltage and frequency

Country Status (8)

Country Link
US (1) US5021679A (en)
EP (2) EP0483214B1 (en)
JP (2) JP3424825B2 (en)
KR (1) KR960009945B1 (en)
AU (1) AU6043690A (en)
CA (1) CA2063250C (en)
DE (2) DE69029581T2 (en)
WO (1) WO1991000564A1 (en)

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DE69033873T2 (en) 2002-06-13
JP3424825B2 (en) 2003-07-07
DE69029581D1 (en) 1997-02-13
WO1991000564A1 (en) 1991-01-10
JP2002132376A (en) 2002-05-10
EP0483214A1 (en) 1992-05-06
EP0737906B1 (en) 2001-12-05
US5021679A (en) 1991-06-04
AU6043690A (en) 1991-01-17
EP0483214B1 (en) 1997-01-02
EP0737906A2 (en) 1996-10-16
CA2063250C (en) 1997-04-01
DE69029581T2 (en) 1997-04-24
JPH05503596A (en) 1993-06-10
EP0483214A4 (en) 1994-02-16
DE69033873D1 (en) 2002-01-17
EP0737906A3 (en) 1997-08-20
KR960009945B1 (en) 1996-07-25
KR920702782A (en) 1992-10-06

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