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STEVAL-TSP005V2

Introduction

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Introduction

This document details the characteristics and performances of the PM8800A demonstration

kit STEVAL-TSP005V2 which has been designed to cover a broad range of power over

ethernet (PoE) applications.

The PM8800A is a highly integrated device embedding an IEEE 802.3af compliant powered

device (PD) interface together with a PWM controller and support for auxiliary sources.

Even though the PM8800A can be configured to work in both isolated and non-isolated

topologies, single or double output; this document focuses on a low cost isolated flyback

converter topology with diode rectification, 5 V output voltage with an up to 2 A output

current capability.

Auxiliary sources can be connected to the board on 2 input connectors. One input (AUX II)

allows prevalence of the auxiliary sources with respect to the PoE, while the other input

(AUX I) allows the usage of a wall adaptor with voltage lower than the internal PoE UVLO

threshold and still benefits from the inherent inrush and DC current limit.

The above mentioned configurations are all supported by the PM8800A demonstration kit

as options on the same PCB.