1 Introduction

Before reviewing the layout of any design, ensure that the schematic has been reviewed with the PoE PD Schematic Review Guide.

This application report is written from the perspective of an applications engineer reviewing a PoE powered device (PD) design. Practical Guidelines to Designing an EMI Compliant PoE Powered Device with Isolated Flyback is another publication that includes PoE PD layout guidelines. That publication goes through a specific design, a flyback, and gives suggestions to take a schematic to a layout. That publication should be used before the layout is completed. This applicaton report is a useful review guide, that provides perspective after the first revision has been completed. Following both Practical Guidelines to Designing an EMI Compliant PoE Powered Device with Isolated Flyback and this publication will ensure all layout guidelines are implemented in the first revision of a layout.