STMicroelectronics EVLPOE007V1

Overview

EVLPOE007V1 from STMicroelectronics is an IEEE 802.3bt-compliant PoE Powered Device (PD) evaluation board built around the PM8805 dual-active-bridge PoE interface IC. It supports up to 100 W output power, features integrated classification resistors and DIP switches for PD Class/Type selection, includes 22 test points and turrets for signal monitoring, and enables functional validation of PoE PD behavior in Gbit Ethernet systems.

For engineers reviewing the EVLPOE007V1 datasheet, EVLPOE007V1 pinout, EVLPOE007V1 application, or EVLPOE007V1 equivalent, this board serves as a complete reference design for IEEE 802.3bt Type 4 PD development - supporting auxiliary input configuration, real-time status display via eight LEDs, and MOSFET-controlled return path with PG signal coordination.

Technical Context

The board implements the PM8805 VFQFPN43 IC in a full IEEE 802.3bt Type 4 PD architecture, integrating dual active bridges for high-efficiency power extraction across all four Ethernet pairs. It incorporates a WA8704-AL PoE signal-path transformer meeting Gbit and isolation requirements, plus chassis-grounded layout with 1.6 mm creepage distance between Ethernet connectors and ground plane.

It provides configurable auxiliary input support (frontal or rear) via J3, uses STL8N10F7 and STL8N10LF3 PowerFLAT MOSFETs for output return path control, and delivers regulated 34–57 V output at up to 2 A with 97% efficiency at full load - verified per DB4882 Rev 1 electrical specifications.

Key Specifications

Availability

EVLPOE007V1 is available at Aetrix Electronics and suitable for PoE PD prototyping, IEEE 802.3bt compliance verification, and PM8805 device learning requiring stable component supply and traceable evaluation hardware.

Supply support for EVLPOE007V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power management devices, and sensors for industrial, automotive, and consumer markets.

EVLPOE007V1 belongs to ST's Power-over-Ethernet evaluation platform family, engineered specifically to accelerate development of IEEE 802.3bt-compliant Powered Devices using ST's integrated PoE interface ICs like the PM8805.

FAQ

What is the primary function of the EVLPOE007V1 evaluation board?

The EVLPOE007V1 is a fully assembled, tested evaluation platform for the PM8805 IEEE 802.3bt PoE Powered Device interface IC. It enables engineers to validate PoE power extraction, classification, detection, and auxiliary input integration without developing custom hardware - supporting rapid functional testing and system-level interoperability checks with standard PSEs.

Does EVLPOE007V1 support both front-end and rear-end auxiliary power inputs?

Yes - J3 is a dual-purpose 6.3 mm power jack receptacle configured to accept either frontal or rear auxiliary input (35–57 V, up to 2 A), allowing flexible hybrid power architectures. The board's layout and switch settings permit seamless transition between PoE-only and PoE-plus-auxiliary modes without soldering changes.

How does the board implement IEEE 802.3bt Type 4 compliance?

EVLPOE007V1 achieves Type 4 compliance through the PM8805's dual active bridge topology, which draws power simultaneously from all four Ethernet pairs. Its WA8704-AL transformer meets Gbit data integrity and isolation requirements, while onboard classification resistors and DIP switches allow precise Class 0–8 selection per IEEE 802.3bt Annex 33B.

Can EVLPOE007V1 be used as a functional block in a final product design?

No - it is strictly an evaluation tool, not a certified production module. While its circuitry mirrors PM8805 reference implementation, the 74×66 mm PCB layout prioritizes testability (e.g., 22 turrets, LED status indicators, DIP switches) over EMI optimization or safety certification. ST explicitly states it is intended for learning and development, not end-equipment integration.