Infomart PEM9300BT Series Power over Ethernet (PoE) IEEE802.3bt Module Evaluation Board

INTRODUCTION IEEE802.3bt Module Evaluation Board

The IEEE802.3bt module evaluation board facilitates the evaluation of Infomart PEM9300BT format modules within applications. It fully complies with the IEEE 802.3bt Power over Ethernet (PoE) standard and is backward compatible with the IEEE 802.3af and IEEE 802.3at standards. It is designed to support Ethernet data rates of 10/100/1000/10GBASE-T.
The board facilitates the evaluation of PEM9300BT format modules within applications. It is specifically engineered to pass Ethernet data signals from the Midspan PSE or PoE-enabled switch connected to the J1 port (RJ45), while also connecting to the system through the J2 port (RJ45).
Please find the PEM9300bt PD Module information here.

INPUTS

The evaluation board is powered either by a DC power supply or any IEEE 802.3bt PSE. Both data and
power input are supplied via the J1 connector (RJ45 port), as shown in Figure 1. The data signals are transmitted
through the data transformer (T1) and then passed to the data output connector J2 (RJ45 port).
It is equipped with a KTA1170 inbuilt bridge rectifier for managing power rectification.

WALL ADAPTOR (WAD) SUPPLY

The evaluation board can be used with an auxiliary DC power input. In this senario, DC power is directly connected
to the DC jack of the evaluation board. The system gives priority to the WAD and smoothly switches from POE Input to the
wall adaptor Input. When a wall power adapter is detected, the internal isolation MOSFET turns off, the classification
current is disabled if VIN is in the classification range, and the Smart MPS comparator is turned off.

OUTPUT

The output voltage connector, J8, is a 2pin 5mm screw terminal block.

DATA OUTPUT

Data provided over the Ethernet cable connected to the Data & Power port (J1) is transposed onto
the Data output port (J2) via the data transformer (T1). The data traces on the evaluation board are designed
to pass through 10/100/1000/10GBASE-T Ethernet data signals. No processing or amplification of this signal is
performed on the evaluation board.