Power Supply Design For Power-over-ethernet Applications

 LM5070 PoE PD Interface PWM Controller serves isolated/non-isolated applications  However, there are limits to the power that the
Ethernet hub CAN provide and to the current that
the Ethernet cables CAN handle. To ensure that
neither is overloaded and to standardize and
streamline the interfacing of PDs to the Ethernet
power sourcing equipment (PSE), the IEEE has
written the 802.3af Power-over-Ethernet specifica-
tion to govern the electrical behavior of Ethernet
power loads. 
LM5642 Dual synchronous buck converter with Oscillator synchronization
  LM2652 Dual Step-down synchronous buck Regulator delivers 1.5A per channel
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Power Supply Design For Power-over-ethernet Applications application circuits
Power Supply Design For Power-over-ethernet Applications application circuits



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