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
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.
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