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  • SML

    PoE

     Introduction

     

    Power over Ethernet is the technology to deliver power and data right on the twisted-pair Ethernet network simultaneously, so all the device connected to Ethernet system could be powered by Ethernet cable without extra power adapter or build-in AC-DC power module. It saves the installation time and cost of the system setup in building Ethernet network. RJ-45 is the most popular socket used in Ethernet, so POE is able to provide most compatible way to adapt with different devices and power on/off capability for remote management of Ethernet devices.

     

     Standard

     

    IEEE 802.3af-2003: 15.4W (max), DC44v@350mA, with 12.95W stable power delivery
    IEEE 802.3at-2009 (PoE+): 25.5W(max)
    IEEE 802.3bt draft:Architected to support 30W,60W and 90W applications

     

     Application

     

     Architecture