Powerdsine IEEE802.3 Manual do Utilizador descarregar pdf (Página 10)

PowerDsine Presentation October 2005 Page 10

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HP POE Power Architecture-AC Input

 Taken at account the voltage drop on a high current battery cable

and PSE voltage drop (Mosfet and CS resistor), it would require

Low Voltage Disconnect to shutdown battery at ~46V in order to

have 44V on the PSE output

 It means battery life would not be fully utilize

 Adding boost converter, which would keep output voltage of the

system constant, in our case 51V,would extend batteries

capabilities on ~15% in POE systems

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Powerdsine IEEE802.3 Manual do Utilizador Página 10