Powerdsine IEEE802.3 Manual do Utilizador descarregar pdf (Página 4)

PowerDsine Presentation October 2005 Page 4

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HP POE voltage range

 Maximum voltage: 57V (safety consideration)

 What is most optimum value for minimum voltage?

 PoEp group objective; maximum power within practical limit (Power

Dissipation, Safety consideration)

 Power dissipation is function of the current

 Increasing minimum voltage reduces current level for the same load

power or

 Increasing Power delivery to the load for a given current value.

 Hence same infrastructure delivers more power to PDs for given

PSE PS size and cost

 Bottom line: more applications may supported

– Larger POEp market

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