The Si3404 5 V Class 3 evaluation kit demonstrates a complete isolated 15 W Power over Ethernet PD system using our Si3404 PoE PD device. A single Si3404 manages the PoE interface and dc-dc conversion. The isolated flyback converter outputs up to 2.5 A for a total power of 15 W while using a standard, off-the-shelf transformer. The Sifos IEEE compliance report, schematics, and layout, are all found in the User’s Guide.