April 2015

DocID027712 Rev 1

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STEVAL-TSP004V2

PoE 5 V - 4 A PD converter based on the PM8803 IEEE802.3at

compliant synchronous flyback controller

Data brief

Features



IEEE 802.3at compliant PD interface



Works with power supplied from Ethernet

LAN cables or from local auxiliary sources







Output current: 4 A



Peak-to-peak output ripple: < 30 mV



Efficiency DC-DC full-load: > 92%



Overall peak efficiency: > 89%



step: < 170 mV



ΔV in load line case: < 0.5%



RoHs compliant

Description

The STEVAL-TSP004V2 is a reference design

for a PoE+, high-efficiency, 5 V - 4 A flyback

converter based on the PM8803 PoE controller.

The PM8803 is a highly integrated device

embedding an IEEE802.3at-compliant powered

device (PD) interface together with a PWM

controller and support for auxiliary sources.

The STEVAL-TSP004V2 reference design is

based on an isolated flyback topology CCM

converter featuring synchronous rectification with

gate driver transformer.