The TPS23861 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 TPS23861 automatically detects Powered Devices (PDs) that have a valid signature, determines power requirements according to classification and applies power. Two-event classification is supported for type-2 PDs. The TPS23861 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 TPS23861 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.
● IEEE 802.3at Quad Port PSE Controller
● Auto Detect, Classification
● Auto Turn-On and Disconnect
● Efficient 255-mΩ Sense Resistor
● Pin-Out Enables Two-Layer PCB
● Kelvin Current Sensing
● 4-Point Detection
● Automatic Mode – As Shipped
● No External Terminal Setting Required
● No Initial I2C Communication Required
● Semi-Automatic Mode – Set by I2C Command
● Continuous Identification and Classification
● Meets IEEE 400-ms TPON Specification
● Fast-Port Shutdown Input
● Operates best when used in conjunction with system reference code http://www.ti.com/product/TPS23861/toolssoftware
● Optional I2C Control and Monitoring
● –40°C to 125°C Temperature Range
● TSSOP 28 Package 9.8 mm × 6.6 mm
