Power-over-ethernet (PoE) device with multi-output transformer to generate output PoE power and device operational power

A hybrid powered device/power sourcing equipment (PD/PSE), comprising:

• a powered device (PD) interface configured to removably receive a connector of an ethernet cable to communicably connect the PD/PSE to an upstream power sourcing equipment (PSE) and receive input power-over-Ethernet (POE) power from the PSE;
• a PSE interface configured to removably receive another connector of another ethernet cable to communicably connect the PD/PSE to a downstream PD and to supply output PoE power to the PD;
• a device power rail to supply operational power to one or more components of the PD/PSE;
• and
• a DC-DC converter comprising a multi-output transformer comprising a transformer input, a first transformer output electrically connected to the PSE interface, and a second transformer output electrically connected to the device power rail,
• wherein DC-DC converter is configured to receive the input PoE power and, in response, supply the input PoE power to the transformer input, generate the output PoE power at the first transformer output, and generate the operational power at the second transformer output and supply the operational power from the second transformer output to the device power rail.