Easy-to-use PoE and Ethernet module
Compact PoE+Ethernet module with W5500 chip, 8W output, EMI-safe DPA423, and SPI interface.
WIZnet - W5500
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Introduction: A Compact and Reliable PoE + Ethernet Module
This blog post introduces a compact and highly reliable PoE + Ethernet module, ideal for embedded and IoT applications. While many affordable PoE modules are available on the market, most suffer from thermal, EMI, or communication stability issues—especially when Ethernet and PoE are integrated in a single board.
The reviewed module addresses these challenges effectively by using the DPA423 switching chip from Power Integrations and the W5500 Ethernet chip from WIZnet. It delivers up to 8W output power and complies with IEEE 802.3af, supporting both Mode A and Mode B with a wide input voltage range of 40–60V. Built-in overvoltage and overcurrent protection ensures safe operation even with faulty PSEs.
The module features full isolation on both PoE and Ethernet sides, rated at 2kV, and supports SPI communication through a simple 4-pin interface. Additional pins are provided for RST, INT, and status monitoring. Measuring just 65 x 22 mm, the module is compact yet powerful, offering both power and communication in a single drop-in solution.
This is a great reference for developers looking to build robust PoE-powered Ethernet devices with minimal effort.
https://zenn.dev/oriana_pp/articles/7b95caf6471b49