WO2008026069A3 - Method and apparatus for soft start power gating with automatic voltage level detection - Google Patents

Method and apparatus for soft start power gating with automatic voltage level detection Download PDF

Info

Publication number
WO2008026069A3
WO2008026069A3 PCT/IB2007/003043 IB2007003043W WO2008026069A3 WO 2008026069 A3 WO2008026069 A3 WO 2008026069A3 IB 2007003043 W IB2007003043 W IB 2007003043W WO 2008026069 A3 WO2008026069 A3 WO 2008026069A3
Authority
WO
WIPO (PCT)
Prior art keywords
soft start
voltage level
secondary voltage
voltage rail
level detection
Prior art date
Application number
PCT/IB2007/003043
Other languages
French (fr)
Other versions
WO2008026069A2 (en
Inventor
Omid Rowhani
Vincent Ross
Original Assignee
Ati Technologies Ulc
Ati Int Srl
Omid Rowhani
Vincent Ross
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 Ati Technologies Ulc, Ati Int Srl, Omid Rowhani, Vincent Ross filed Critical Ati Technologies Ulc
Priority to EP07825348.1A priority Critical patent/EP2062357B1/en
Publication of WO2008026069A2 publication Critical patent/WO2008026069A2/en
Publication of WO2008026069A3 publication Critical patent/WO2008026069A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • H03K17/161—Modifications for eliminating interference voltages or currents in field-effect transistor switches
    • H03K17/165—Modifications for eliminating interference voltages or currents in field-effect transistor switches by feedback from the output circuit to the control circuit
    • H03K17/166—Soft switching
    • H03K17/167—Soft switching using parallel switching arrangements
    • 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
    • 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
    • G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
    • 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

A method and apparatus for selectively charging a secondary voltage rail includes selectively and partially charging a secondary voltage rail using at least one soft start power gate switch and using an initial power control indicator. The partially charged secondary voltage rail is selectively charged, using at least one main power gate switch, based on the initial power control indicator and a detected voltage on the secondary voltage rail. When the initial power control indicator is in a state representative of an initial power up command and when the detected voltage is greater than or equal to a predetermined voltage level, at least one main power gate switch is closed thereby charging the secondary voltage rail.
PCT/IB2007/003043 2006-08-31 2007-08-31 Method and apparatus for soft start power gating with automatic voltage level detection WO2008026069A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07825348.1A EP2062357B1 (en) 2006-08-31 2007-08-31 Method and apparatus for soft start power gating with automatic voltage level detection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/469,153 2006-08-31
US11/469,153 US8015419B2 (en) 2006-08-31 2006-08-31 Method and apparatus for soft start power gating with automatic voltage level detection

Publications (2)

Publication Number Publication Date
WO2008026069A2 WO2008026069A2 (en) 2008-03-06
WO2008026069A3 true WO2008026069A3 (en) 2008-08-21

Family

ID=38983297

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/003043 WO2008026069A2 (en) 2006-08-31 2007-08-31 Method and apparatus for soft start power gating with automatic voltage level detection

Country Status (3)

Country Link
US (1) US8015419B2 (en)
EP (1) EP2062357B1 (en)
WO (1) WO2008026069A2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7793130B2 (en) * 2007-04-24 2010-09-07 Taiwan Semiconductor Manufacturing Company, Ltd. Mother/daughter switch design with self power-up control
JP4535134B2 (en) 2008-01-16 2010-09-01 ソニー株式会社 Semiconductor integrated circuit and power supply control method thereof
US8429432B2 (en) * 2009-10-22 2013-04-23 Dell Products L.P. Stand-by power system for information handling systems
US8484497B2 (en) * 2010-07-27 2013-07-09 Arm Limited Power supply control within an integrated circuit
JP2012038401A (en) 2010-08-11 2012-02-23 Elpida Memory Inc Semiconductor device and power supply control method for semiconductor device
US8990604B2 (en) * 2011-10-14 2015-03-24 Apple Inc. Alternately sensing voltage on supply side or load side of a power gate of an electronic device and modifying feedback input of a power supply controlled by the power gate based on which side of the power gate is currently sensed
US8786309B2 (en) 2011-10-31 2014-07-22 Apple Inc. Multi-path power switch scheme for functional block wakeup
US8542054B2 (en) 2011-10-31 2013-09-24 Apple Inc. Power switch acceleration scheme for fast wakeup
US10153762B2 (en) * 2012-03-30 2018-12-11 Infineon Technologies Ag Method for controlling a semiconductor component
KR102022355B1 (en) * 2012-07-10 2019-09-18 삼성전자주식회사 Power Gating Circuit of System On Chip
US8823445B2 (en) 2012-11-29 2014-09-02 Freescale Semiconductor, Inc. Systems and methods for controlling power in semiconductor circuits
US20150028941A1 (en) * 2013-07-29 2015-01-29 Texas Instruments Incorporated Controlled power switch chain sequencing for both power up and power down of a power domain
US9705491B1 (en) * 2016-05-18 2017-07-11 Qualcomm Incorporated Apparatus and method for supplying power to portion of integrated circuit via weak-strong and strong-only switch cells
US10317968B2 (en) 2017-03-28 2019-06-11 Qualcomm Incorporated Power multiplexing with an active load
US11676897B2 (en) * 2021-05-26 2023-06-13 Qualcomm Incorporated Power gating switch tree structure for reduced wake-up time and power leakage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1391803A1 (en) * 2001-03-14 2004-02-25 International Business Machines Corporation Computer device, expansion card, mini pci card, automatic power-on circuit, automatic starting method, and signal activating method
US6937086B1 (en) * 2001-03-02 2005-08-30 Volterra Semiconductor Corporation Method and apparatus for operating a field-effect transistor (FET) pair
US20060061395A1 (en) * 2003-01-20 2006-03-23 Takayuki Noto Semiconductor integrated circuit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4906867A (en) * 1988-11-09 1990-03-06 Ncr Corporation Buffer circuit with load sensitive transition control
US6465993B1 (en) * 1999-11-01 2002-10-15 John Clarkin Voltage regulation employing a composite feedback signal
US6333650B1 (en) * 2000-12-05 2001-12-25 Juniper Networks, Inc. Voltage sequencing circuit for powering-up sensitive electrical components
US6597157B1 (en) * 2001-07-25 2003-07-22 3Dlabs, Inc., Ltd Parallel phased switch control
US6785161B2 (en) * 2002-06-28 2004-08-31 Micron Technology, Inc. High voltage regulator for low voltage integrated circuit processes
US7142019B2 (en) * 2004-09-03 2006-11-28 Texas Instruments Incorporated System and method for reducing power-on transient current magnitude
US7380146B2 (en) * 2005-04-22 2008-05-27 Hewlett-Packard Development Company, L.P. Power management system
US7230452B2 (en) * 2005-04-22 2007-06-12 Texas Instruments Incorporated Driver circuit
US7401243B2 (en) * 2005-06-21 2008-07-15 Dell Products L.P. Demand-based dynamic clock control for transaction processors
US7511528B2 (en) * 2006-08-02 2009-03-31 International Business Machines Corporation Device and method to eliminate step response power supply perturbation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6937086B1 (en) * 2001-03-02 2005-08-30 Volterra Semiconductor Corporation Method and apparatus for operating a field-effect transistor (FET) pair
EP1391803A1 (en) * 2001-03-14 2004-02-25 International Business Machines Corporation Computer device, expansion card, mini pci card, automatic power-on circuit, automatic starting method, and signal activating method
US20060061395A1 (en) * 2003-01-20 2006-03-23 Takayuki Noto Semiconductor integrated circuit

Also Published As

Publication number Publication date
WO2008026069A2 (en) 2008-03-06
EP2062357B1 (en) 2018-09-19
EP2062357A2 (en) 2009-05-27
US8015419B2 (en) 2011-09-06
US20080059824A1 (en) 2008-03-06

Similar Documents

Publication Publication Date Title
WO2008026069A3 (en) Method and apparatus for soft start power gating with automatic voltage level detection
WO2009073162A3 (en) Sensing memory cells
WO2011138276A3 (en) Integrated circuit for controlling a switch of a current path with leading edge blanking device of the current signal.
WO2005114808A3 (en) Intelligent battery charging system
WO2009001615A1 (en) Prediction control system
GB2421644B (en) Method for verifying smart battery failures by measuring input charging voltage and associated systems
WO2007106715A3 (en) Deep under voltage recovery in a battery pack
WO2009044557A1 (en) Secondary cell charge control method and charge control circuit
WO2008093525A1 (en) Power source system, power supply control method for the power source system, power supply control program for the power source system, and computer-readable recording medium with recorded power supply control program
WO2010033517A3 (en) System and method for operating an electric vehicle
EP1973077A3 (en) Apparatus and system for monitoring tool use
GB201019061D0 (en) System and method for controlling an electricity supply
DE602005006462D1 (en) Fixing tool with mode selector switch
WO2009134601A3 (en) Method of selecting a communication system for operating with a communication device in an idle mode, and communication device
WO2010135260A3 (en) Energy efficient and fast charge modes of a rechargeable battery
WO2011098916A3 (en) Methods for charging metal-air cells
WO2006081044A3 (en) Power sourcing equipment having auto-zero circuit for determining and controlling output current
WO2007124364A3 (en) Contextual prediction of user words and user actions
WO2009025307A1 (en) Aircraft and method of using aircraft
WO2009068960A3 (en) Vehicle control apparatus
WO2010111451A3 (en) Under frequency/under voltage detection in a demand response unit
TW200740003A (en) Battery device
WO2006116774A3 (en) Hybrid battery
WO2006035287A3 (en) Electrical leakage dedection apparatus and electrical leakage detection method for fuel cell
WO2006060144A3 (en) Light detection power system and method for same

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07825348

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

WWE Wipo information: entry into national phase

Ref document number: 2007825348

Country of ref document: EP