TPS23861PWR Texas Instruments MCU

TPS23861PWR Overview

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Description

The TPS23861 is an easy-to-use, flexible, IEEE802.3at PSE solution. As shipped, itautomatically 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-eventclassification is supported for type-2 PDs. The TPS23861 supports DC disconnection and the externalFET architecture allows designers to balance size, efficiency and solution costrequirements.

The unique pin-out enables 2-layer PCB designs via logical grouping and clear upper andlower differentiation of I2C and power pins. This delivers best-in-classthermal performance, Kelvin accuracy and low-build cost.

In addition to automatic operation, the TPS23861 supports Semi-Auto Mode viaI2C control for precision monitoring and intelligent power management.Compliance with the 400-ms TPON specification is ensured whether insemi-automatic or automatic mode.

Features

IEEE 802.3at Quad Port PSE controller
- Auto Detect, classification
- Auto Turn-On anddisconnect
- Efficient 255-mΩ sense resistor
Pin-Out enables Two-LayerPCB
Kelvin Current Sensing
4-Pointdetection
Automatic mode – as shipped
- No External terminal setting required
- No InitialI2C communication required
Semi-Automatic mode – set byI2C command
- Continuous Identification and Classification
- Meets IEEE400-ms TPON specification
- Fast-Port shutdowninput
- Operates best when used in conjunction with system reference codehttp://www.ti.com/product/TPS23861/toolssoftware
Optional I2C control andmonitoring
–40°C to 125°C Temperature range
TSSOP 28Package 9.8 mm x 6.6 mm