WO2006099613A3 - Method and apparatus for current sharing ethernet power across four conductor pairs - Google Patents

Method and apparatus for current sharing ethernet power across four conductor pairs Download PDF

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Publication number
WO2006099613A3
WO2006099613A3 PCT/US2006/010023 US2006010023W WO2006099613A3 WO 2006099613 A3 WO2006099613 A3 WO 2006099613A3 US 2006010023 W US2006010023 W US 2006010023W WO 2006099613 A3 WO2006099613 A3 WO 2006099613A3
Authority
WO
WIPO (PCT)
Prior art keywords
ethernet
conductors
current sharing
conductor pairs
ethernet power
Prior art date
Application number
PCT/US2006/010023
Other languages
French (fr)
Other versions
WO2006099613A2 (en
Inventor
Meilissa Rui Ming Lum
Roger Karam
Original Assignee
Cisco Tech Inc
Meilissa Rui Ming Lum
Roger Karam
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 Cisco Tech Inc, Meilissa Rui Ming Lum, Roger Karam filed Critical Cisco Tech Inc
Priority to EP06738986.6A priority Critical patent/EP1859647B1/en
Publication of WO2006099613A2 publication Critical patent/WO2006099613A2/en
Publication of WO2006099613A3 publication Critical patent/WO2006099613A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40032—Details regarding a bus interface enhancer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/10—Current supply arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/407—Bus networks with decentralised control
    • H04L12/413—Bus networks with decentralised control with random access, e.g. carrier-sense multiple-access with collision detection (CSMA-CD)

Abstract

Methods and apparatus for delivering power down all conductors of an Ethernet connection are disclosed. Embodiments include control circuitry coupled to both conductor of an Ethernet cable. The control circuitry is configured to sense the current flowing through power switches coupled inline with the respective conductors and control the switch in order to maintain the current flow through the power switch below a predetermined level. The circuitry prevents Ethernet ports from being shutting down due to conditions caused by imbalances in the effective resistance of Ethernet conductors and circuit paths.
PCT/US2006/010023 2005-03-16 2006-03-16 Method and apparatus for current sharing ethernet power across four conductor pairs WO2006099613A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06738986.6A EP1859647B1 (en) 2005-03-16 2006-03-16 Method and apparatus for current sharing ethernet power across four conductor pairs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/082,607 2005-03-16
US11/082,607 US7474704B2 (en) 2005-03-16 2005-03-16 Method and apparatus for current sharing ethernet power across four conductor pairs

Publications (2)

Publication Number Publication Date
WO2006099613A2 WO2006099613A2 (en) 2006-09-21
WO2006099613A3 true WO2006099613A3 (en) 2007-09-20

Family

ID=36992476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/010023 WO2006099613A2 (en) 2005-03-16 2006-03-16 Method and apparatus for current sharing ethernet power across four conductor pairs

Country Status (3)

Country Link
US (1) US7474704B2 (en)
EP (1) EP1859647B1 (en)
WO (1) WO2006099613A2 (en)

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US7490251B2 (en) * 2006-04-13 2009-02-10 Cisco Technology, Inc. Method and apparatus for current sharing ethernet power across four conductor pairs using a midspan device
US8102842B2 (en) 2006-08-04 2012-01-24 Broadcom Corporation Integrated switch
US8165133B2 (en) * 2006-12-22 2012-04-24 Broadcom Corporation Physical layer device with integrated switch
US7705741B2 (en) * 2007-05-21 2010-04-27 Texas Instruments Incorporated Detection of a broken wire between power sourcing equipment and a powered device
US7696636B2 (en) * 2007-08-24 2010-04-13 Broadcom Corporation Midspan powering in a Power over Ethernet system
US7971075B2 (en) * 2007-09-25 2011-06-28 Broadcom Corporation Four-pair midspan powering with a splitter in a power over ethernet application
US7975153B2 (en) * 2007-09-25 2011-07-05 Broadcom Corporation Transmission impedance for four-pair midspan powering in a power over ethernet application
US7696640B2 (en) * 2008-02-05 2010-04-13 Broadcom Corporation Power over Ethernet power sourcing equipment architecture for variable maximum power delivery
US8185764B2 (en) * 2008-10-16 2012-05-22 Cisco Technology, Inc. Techniques for ensuring power delivery over only data-active pairs of data communications cabling
US8049484B2 (en) * 2009-03-17 2011-11-01 Cisco Technology, Inc. Controlling inline power at a powered device
US8694806B2 (en) * 2011-07-26 2014-04-08 Cisco Technology, Inc. Power transfer in an inline switch device
CN102387022B (en) * 2011-10-20 2016-08-31 华为技术有限公司 A kind of POE method and apparatus
US9134774B2 (en) 2012-04-27 2015-09-15 Hewlett-Packard Development Company, L.P. Sharing power between network devices
US9640989B2 (en) * 2012-09-27 2017-05-02 Maxim Integrated Products, Inc. Powered device controllers having shared connection interfaces and two-level inrush current limit
CN103403563B (en) * 2013-01-30 2015-08-05 华为技术有限公司 Reverse supply line test macro and equipment
US9634844B2 (en) * 2014-01-30 2017-04-25 Linear Technology Corporation Detection scheme for four wire pair Power Over Ethernet system
US10090666B2 (en) 2014-12-01 2018-10-02 Linear Technology Corporation Circuit architectures for protecting against PoDL wire faults
US10135626B2 (en) * 2015-04-14 2018-11-20 Avago Technologies General Ip (Singapore) Pte. Ltd. Power coupling circuits for single-pair ethernet with automotive applications
US9467136B1 (en) * 2015-10-05 2016-10-11 Monolithic Power Systems, Inc. Monolithic integrated circuit switch device with output current balancing for parallel-connection
EP3176978B1 (en) * 2015-12-01 2018-06-20 Linear Technology Corporation Circuit architectures for protecting against podl wire faults
US10418986B2 (en) 2015-12-14 2019-09-17 Monolithic Power Systems, Inc. Monolithic integrated circuit switch device with output current balancing for parallel-connection
US10809134B2 (en) 2017-05-24 2020-10-20 Cisco Technology, Inc. Thermal modeling for cables transmitting data and power
US11054457B2 (en) 2017-05-24 2021-07-06 Cisco Technology, Inc. Safety monitoring for cables transmitting data and power
US10541758B2 (en) 2017-09-18 2020-01-21 Cisco Technology, Inc. Power delivery through an optical system
US11431420B2 (en) 2017-09-18 2022-08-30 Cisco Technology, Inc. Power delivery through an optical system
US11093012B2 (en) 2018-03-02 2021-08-17 Cisco Technology, Inc. Combined power, data, and cooling delivery in a communications network
US10281513B1 (en) 2018-03-09 2019-05-07 Cisco Technology, Inc. Verification of cable application and reduced load cable removal in power over communications systems
US10732688B2 (en) 2018-03-09 2020-08-04 Cisco Technology, Inc. Delivery of AC power with higher power PoE (power over ethernet) systems
US10631443B2 (en) 2018-03-12 2020-04-21 Cisco Technology, Inc. Splitting of combined delivery power, data, and cooling in a communications network
US10672537B2 (en) 2018-03-30 2020-06-02 Cisco Technology, Inc. Interface module for combined delivery power, data, and cooling at a network device
US10958471B2 (en) 2018-04-05 2021-03-23 Cisco Technology, Inc. Method and apparatus for detecting wire fault and electrical imbalance for power over communications cabling
US11290291B2 (en) * 2018-07-31 2022-03-29 Analog Devices International Unlimited Company Power over data lines system with combined dc coupling and common mode termination circuitry
US10594367B1 (en) * 2018-11-07 2020-03-17 Linear Technology Holding Llc Power over data lines system with accurate and simplified cable resistance sensing
US10763749B2 (en) 2018-11-14 2020-09-01 Cisco Technology, Inc Multi-resonant converter power supply
US10790997B2 (en) 2019-01-23 2020-09-29 Cisco Technology, Inc. Transmission of pulse power and data in a communications network
US11061456B2 (en) 2019-01-23 2021-07-13 Cisco Technology, Inc. Transmission of pulse power and data over a wire pair
US10680836B1 (en) * 2019-02-25 2020-06-09 Cisco Technology, Inc. Virtualized chassis with power-over-Ethernet for networking applications
CN111901130B (en) * 2019-05-05 2022-08-05 杭州海康威视数字技术股份有限公司 Ethernet power supply equipment interface circuit and Ethernet power supply equipment
US11418369B2 (en) * 2019-08-01 2022-08-16 Analog Devices International Unlimited Company Minimizing DC bias voltage difference across AC-blocking capacitors in PoDL system
US11063630B2 (en) 2019-11-01 2021-07-13 Cisco Technology, Inc. Initialization and synchronization for pulse power in a network system
US11252811B2 (en) 2020-01-15 2022-02-15 Cisco Technology, Inc. Power distribution from point-of-load with cooling
US11088547B1 (en) 2020-01-17 2021-08-10 Cisco Technology, Inc. Method and system for integration and control of power for consumer power circuits
US11853138B2 (en) 2020-01-17 2023-12-26 Cisco Technology, Inc. Modular power controller
US11438183B2 (en) 2020-02-25 2022-09-06 Cisco Technology, Inc. Power adapter for power supply unit
US11637497B2 (en) 2020-02-28 2023-04-25 Cisco Technology, Inc. Multi-phase pulse power short reach distribution
US11320610B2 (en) 2020-04-07 2022-05-03 Cisco Technology, Inc. Integration of power and optics through cold plate for delivery to electronic and photonic integrated circuits
US11307368B2 (en) 2020-04-07 2022-04-19 Cisco Technology, Inc. Integration of power and optics through cold plates for delivery to electronic and photonic integrated circuits

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US6535983B1 (en) * 1999-11-08 2003-03-18 3Com Corporation System and method for signaling and detecting request for power over ethernet
US20040260794A1 (en) * 2003-06-10 2004-12-23 Alon Ferentz Pre-detection of powered devices

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FR2800955B1 (en) * 1999-11-04 2005-04-29 Cit Alcatel METHOD FOR TELE-POWERING A TERMINAL IN A LOCAL NETWORK, TELEALIMENTATION DEVICE AND CORRESPONDING TERMINAL
US7026730B1 (en) * 2002-12-20 2006-04-11 Cisco Technology, Inc. Integrated connector unit
US7154381B2 (en) * 2003-05-23 2006-12-26 Sonos, Inc. System and method for operating a sensed power device over data wiring

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US6535983B1 (en) * 1999-11-08 2003-03-18 3Com Corporation System and method for signaling and detecting request for power over ethernet
US20040260794A1 (en) * 2003-06-10 2004-12-23 Alon Ferentz Pre-detection of powered devices

Non-Patent Citations (1)

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Title
See also references of EP1859647A4 *

Also Published As

Publication number Publication date
WO2006099613A2 (en) 2006-09-21
EP1859647A2 (en) 2007-11-28
US20060209875A1 (en) 2006-09-21
US7474704B2 (en) 2009-01-06
EP1859647B1 (en) 2018-09-19
EP1859647A4 (en) 2014-07-09

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