PowerDsine IEEE802.3 manual 802.3af modular installed base considerations

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802.3af modular installed base considerations

„802.3af minimum PSE voltage: 44V

„Modular switches

–44V power supply is deployed with chassis

–Customer expectation: 802.3at-blades added to 802.3af-chassis

–51V minimum at PSE Æ Boost converter MUST be placed on blade

„More power dissipation at blade

„More components added to crowded blade

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PowerDsine Presentation

October 2005

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Contents Vancouver BC, November Part a Objectives HP POE voltage range PoEp minimum voltage 44V 51V Pd power PoEp minimum voltage PoEp Power Architecture-AC Input PoEp Power Architecture-AC Input HP POE Power Architecture-AC Input PoEp Power Architecture-AC UPS PoEp Power Architecture-AC UPS PoEp with Boost circuit PoEp with Add Power Conclusions Part B „ 802.3af minimum PSE voltage „ Modular switches 802.3af modular installed base considerations„ The Conflict is How to solve the conflict„ Proposed Solution How to solve the conflict PD side„ Effects on PSE specifications PoEp PSE minimum voltage is How to solve the conflict PSE sideSummary Discussion References Annex a Enhanced Classification table
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