Quad port power-over-Ethernet PSE controller is an easy-to-use, flexible solution

Stocked by Mouser, the Texas Instruments TPS23861 Quad Port Power-Over-Ethernet PSE controller is an easy-to-use, flexible, IEEE802.3at PSE solution. As shipped, it automatically manages four 802.3at ports without the need for any external control. The device automatically detects powered devices that have a valid signature, determines power requirements according to classification and applies power. Two-event classification is supported for type-2 PDs. It supports DC disconnection and the external FET architecture allows designers to balance size, efficiency and solution cost requirements. The unique pin-out enables 2-layer PCB designs via logical grouping and clear upper and lower differentiation of I2C and power pins. This delivers best-in-class thermal performance, Kelvin accuracy and low-build cost. In addition to automatic operation, the device supports semi auto-mode via I2C control for precision monitoring and intelligent power management. Compliance with the 400-ms TPON specification is ensured whether in semi-automatic or automatic mode.