An open source project for underwater sensor nodes based on single-pair Ethernet technology SPE (from tutorial to actual combat, English)

Single-Pair-Ethernet technology (SPE, Single-Pair-Ethernet) describes the transmission of Ethernet through only a pair of copper cores. In addition to transmitting data through Ethernet, it can also simultaneously provide power to terminal devices through PoDL (power supply over data lines).

Schematic PCB

L3751 DC converter reference solution

STMicroelectronics provides users with a reference design based on L3751, suitable for DC-DC converters with input voltage 36-72V DC, output voltage 12 VDC, and 10A.

Schematic PCB

MAXREFDES1273: PoE-powered device and 48V 850mA active-clamped forward DC-DC converter using the MAX5974C and MAX5969B

The MAXREFDES1273 is a Power-over-Ethernet (PoE) powered device (PD) and an active clamp forward DC-DC converter (ACFC) that delivers up to 850mA at 48V from 39V to 57V supply voltage

Schematic PCB