High Power PoE PD Interface with Integrated Flyback Controller:To this day, Power over Ethernet (PoE) continues to gain popularity in today’s networking world. The 12.95W delivered to the Powered Device (PD) input supplied by the Power Sourcing Equipment (PSE) is a universal supply. Each PD provides its own DC/DC conversion from a nominal 48V supply, thus eliminating the need for a correct voltage wall adapter. However, higher power devices can not take advantage of standard PoE because of its power limitations, and must rely on a large wall adapter as their primary supply. The new LTC4268-1 breaks this power barrier by allowing for power of up to 35W for such power-hungry 2-pair PoE applications. The LTC4268-1 provides a complete solution by integrating a high power PD interface control with an isolated fl yback controller.