Powerdsine IEEE802.3 Manuel d'utilisateur télécharger pdf (Page 15)

PowerDsine Presentation October 2005 Page 15

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Conclusions

 Increasing minimum PoEp voltage from 44V to 51V would

increase overall system efficiency

 Costs of 51V PS and 48V PS are approximately the same and

from technical point of view would be beneficial to have minimum

51V in PoEp PSE

 Regardless of output voltage consideration, adding boost circuit for

system with batteries back up, would increase battery useful life in

POE systems

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Powerdsine IEEE802.3 Manuel d'utilisateur Page 15