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Pre-standard 802.3at PoE chips deliver 36W

Posted: 27 Mar 2007 ?? ?Print Version ?Bookmark and Share

Keywords:PoE? WiMAX? IEEE802.3at? Microsemi? xx?

Microsemi Corp. has developed what it claims is the industry's first pre-standard IEEE802.3at PoE integrated product family, delivering 36W of power for devices ranging from video screen phones and WiMAX transmitters to pan-tilt-zoom cameras, thin-clients and laptop computers.

The product family includes the PD64012GH 12-port power sending equipment (PSE) PoE manager and the PD64004AH 4-port PSE PoE manager. Both feature integrated power FETs, enabling manufacturers to build switches that can drive 36W for every 2-pairs and interface to devices consuming up to 30W.

Customers requiring up to 60W can use the same Microsemi ICs in a 4-pair configuration. The ICs support Layer-2 Classification.

"Our customers can have peace of mind building Ethernet switches with these new circuits, knowing that they are ready for the forthcoming IEEE802.3at standard,'' said Daniel Feldman, PoE product line manager at Microsemi, in a statement. "The IEEE802.3at, with its 30W and 60W configurations, enables the deployment of infrastructure applications such as IEEE802.11n WLAN, IEEE802.16d WiMAX, fiber-to-the-home, as well as powering computing devices such as thin clients and portable computers.''

The PD64012GH and PD64004AH not only operate in pre-standard IEEE802.3at mode, but also are 100-percent IEEE802.3af-compliant when detecting IEEE802.3af-powered devices. The PD64012GH and PD64004AH are managed by the PD63000G PoE MCU using Firmware Release 6 or above.

The PD64012GH and PD64004AH are sampling today and will be in volume production this month.

- Gina Roos

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