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2008-09-16 Wall adapter powers IEEE 802.3af powered device
Power-over-Ethernet is an emerging technology that allows an existing Ethernet connection to carry both data and power. However, today’s powered-device (PD) designers face a dilemmanot all Ethernet connections are wired for power. To operate with these legacy connections, a PD can use a wall adapter, but this capability must be designed into the PD.
2005-07-07 Silver Telecom's new PoE module complies with IEEE 802.3af
Silver Telecom launched its IEEE 802.3af-compliant Ag9000 series of Power-over-Ethernet modules that is designed for any Ethernet peripheral up to 12W.
2002-11-19 Polyswitch helps designers comply with IEEE 802.3af
Tyco has announced the release of Raychem's PolySwitch resettable device that helps provide resettable overcurrent protection for powered Ethernet equipment.
2008-12-10 PoE controller meets IEEE 802.3at spec
Linear Technology Corp. has developed the LTC4265, an 802.3af/802.3at compliant PoE interface controller for high-power powered device (PD) applications needing up to 25.5W
2008-01-21 Multiport midspans tip pre-standard IEEE 802.3 specs
High-power multiport PoE midspans based on pre-standard IEEE 802.3at specifications have been launched by Microsemi Corp
2004-02-20 Linear Tech PoE controllers comply with IEEE 802.3af
Linear Technology has released two quad PoE controllers that are fully compliant with the IEEE 802.3af specification.
2004-11-25 IEEE forms high-power PoE group
PowerDsine, a supplier of power-over-Ethernet (PoE) solutions, announced Monday (Nov. 22) that the Institute of Electrical Electronics Engineers (IEEE) has formed a new 802.3 Study Group to discuss the enhancement of the IEEE PoE 802.3af standard.
2004-12-10 IC simplifies design of IEEE 802.3af-compliant PSE
Texas Instruments announced a next-generation power management IC that promises to simplify the design of IEEE 802.3af-compliant PSE.
2004-07-21 IEEE 802.3 forms residential Ethernet study group
With the backing of several consumer electronics manufacturers, the IEEE 802.3 committee has formed a study group Thursday (July 16, 2004) that will explore the need for an Ethernet specification for residential applications
2007-06-01 Transmit power safely with PoE tech
The PoE technology allows safe and reliable power transmission15W with 48Vfor telecom applications over existing Cat5, Cat5e and Cat6 cables. This article discusses the technology and its benefits.
2003-04-30 TI ships IC for "Power Over Ethernet" apps
Texas Instruments Inc. has released two new power management ICs that allow dc power and data to be deliver and sourced over a standard Ethernet cable.
2006-12-14 TI intros PoE manager for multiport systems
TI has introduced a fully integrated PoE management device, said to be the industry's first, that allows multiport enterprise systems to deliver up to 25W of power over a standard Ethernet cable.
2006-01-12 PoE solutions for VoIP apps
Phihong USA, a power-over-Ethernet (PoE) solutions provider, is offering a range of PoE solutions, which is said to address the issues of cost and accessibility while detecting and protecting IEEE 802.3af PoE products.
2009-06-03 PoE controller delivers up to 100W
Linear Technology Corp. has launched the LTC4266, a 4-port PoE controller for power sourcing equipment (PSE) required to provide IEEE 802.3at (25.5W) or proprietary higher power levels
2006-10-11 Phihong's midspan suits wireless, WiMAX access points
Phihong USA's 30W one-port midspan, designated the POE30U series, is designed to power wireless and WiMAX access points that require up to 24W power.
2004-12-02 Netgear releases PoE-powered WLAN for SMBs
Netgear announced a PoE solution for small businesses designed to ease installation of WLANs by allowing wireless access points to be installed anywhere.
2005-11-01 Low-cost solutions for PoE-powered devices
Create reliable solutions that are low-cost, energy efficient and easy to manufacture using integrated power ICs
2005-01-27 Linear verifies PoE controllers using Ixia test solution
Linear Technology Corp. has selected Ixia, a provider of high performance IP network testing solutions, to demonstrate and test the full feature capabilities of its power over Ethernet chipset.
2002-07-16 Linear Tech controller protects Ethernet ports
Linear Technology Corp. has introduced the LTC4255 quad -48V Hot Swap controller that controls powered Ethernet ports and provides open-circuit detection and short-circuit protection.
2009-09-04 Is PoE the 'next big thing'?
Our industry is always searching for, hoping for and betting on the next big thing. Will PoE (IEEE 802.3af) be one of the winners?
2005-12-01 How to get the most out of power-over-Ethernet
Time to shift gears and maximize power consumption in your network infrastructures using PoE.
2006-10-12 Freescale unveils its first PoE/PD controller
Freescale's first single-chip PoE controller combines a powered device interface port supporting the IEEE 802.3af PoE standard and a pulse width modulator controller.
2004-02-23 Cisco offers power-over-Ethernet products
Cisco Systems has bolstered its early support for IEEE 802.3af POE by expanding its support for the standard across most models of its Catalyst switches.
2007-10-04 Be free of power lines with PoE interface controllers
PoE interface controllers may be used as a substitute for AC power lines in many networked powered devices. This is possible using PoE powered device interface controllers from STMicroelectronics.
2008-09-15 Using Standard Power over Ethernet controllers for high-powered devices
Any IEEE 802.3af power sourcing equipment (PSE) power controller can be used for higher power by adding a simple circuit to the port to increase available current.
2006-03-20 Transformer targets PoE products
Pulse has introduced a series of high efficiency, off-the-shelf power transformers for the powered device side PoE products that meet the IEEE 802.3af standard.
2007-09-27 Quad PSE controller rolls for high-power PoE apps
Maxim has released the MAX5952, a quad PSE controller for high-power and IEEE 802.3af-compliant PoE applications.
2010-05-24 PSE controller packs power MOSFET, sense resistor
From Maxim Integrated Products comes the MAX5971A single-port, power-sourcing equipment (PSE) controller for IEEE 802.3af/at-compliant, high-power, PoE+ applications.
2009-08-13 PSE controller enables PoE+ applications
The MAX5965 monolithic quad power sourcing equipment (PSE) controller from Maxim Integrated Products complies with IEEE 802.3at
2008-02-15 PoE+ circuit delivers 13W to 70W for powered devices
This application note presents a simple, cost-effective, pre-IEEE 802.3at PoE+ powered device (PD) solution that employs the MAX5941B
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