High Power PoE PD Using the TPS2375/77-1

Some specialized applications require more power than 12.95 W allowed by the IEEE802.3af standard. This application report discusses techniques for implementing nonstandard high-power systems with an emphasis on the powered device (PD). A specific design example of a 27-W two-pair PD front end is presented along with test results. This type of solution bridges between the existing IEEE 802.3af a