Texas Instruments BOOST-PSEMTHR-007, User Manual, Page: 2 / 38

Description
www.ti.com
2 SLVUBP0A – May 2019 – Revised August 2019
Submit Documentation Feedback
Copyright © 2019, Texas Instruments Incorporated
TPS23881EVM: PoE, PSE, TPS23881 Evaluation Module
5 EVM Jumpers
...............................................................................................................
7
6 AUTO Pin Programming
....................................................................................................
8
7 BOOST-PSEMTHR-007 Bill of Materials
...............................................................................
28
8 TPS23881EVM-008 Bill of Material
......................................................................................
30
Trademarks
LaunchPad, Code Composer Studio are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.
1 Description
The TPS23881EVM features the 8-channel, TPS23881 and IEEE 802.3bt (draft) PoE PSE controller. The
EVM consists of a motherboard (BOOST-PSEMTHR-007) and a daughterboard (TPS23881EVM-008)
containing one TPS23881 device. The TPS23881EVM provides a multi-port base platform interface for
TPS23881EVM-008,
MSP-EXP430FR5969 (LaunchPad™), and USB2ANY (USB Interface Adapter).
1.1 Features
The EVM supports the following features:
• Four IEEE802.3bt 2-pair ports with 1000BASE-T (gigabit Ethernet data pass-through)
• Two IEEE802.3bt 4-pair ports with 1000BASE-T (gigabit Ethernet data pass-through)
• Single DC power supply input
• Onboard 3.3-V regulator
• Onboard I
2
C interface to both TPS23881 devices from either USB2ANY or MSP-EXP430FR5969 .
• Port ON status LEDs
• User test points
1.2 Applications
The EVM is used in the following applications:
• Enterprise and SoHO switches and routers
• Connected ceiling LED switches
• PoE pass-through power modules
• Network video recorders (NVRs)
• Wireless backhaul and small-cell networking
2 Quick Start
2.1 Input Power
2.1.1 Input Power (Labeled VPWR)
The DC input voltage is provided through J1 (screw jack). A DC power supply or wall adapter with
sufficient current capacity can power the EVM.
CAUTION
Reverse voltage protection is not provided; ensure that the correct polarity is
applied to J1.
This DC input is labeled VPWR in the schematics and is used for port VBUS as well as for the TPS23881
devices. The VPWR connections to the PoE ports are not fused. Each two-pair port is capable of
furnishing at least 30 W and each four-pair port can furnish 90 W.