Application Note AN014
Designing an EMI
Compliant 802.3af PD
with the AS1113 and
AS1114
Revision 2.0 – January 2018
2
Revision 2.0
AN014, Designing an EMI Compliant 802.3af PD
CONTENTS
Contents .................................................................................................................................................... 2
General Description ................................................................................................................................ 3
Common Mode Noise in Traditional PoE Systems ................................................................................ 3
Architecture and DC-DC Converter Topology for low Common-mode noise ......................................... 5
Summary ................................................................................................................................................ 6
Notes ........................................................................................................................................................ 7
Contact Information ...................................................................................................................................... 8
Important Notices ......................................................................................................................................... 8
Legal Notice .........................................................................................................................................8
Life and Safety Policy ..........................................................................................................................8