[Open Frime TV] has a video addressing this in a novel way, by creating the windings for a switch-mode power supply transformer using stacked PCB coils instead of wire (Russian language ...

A power tip that discusses how to address highly integrated USB PD charger design constraints with a self-biasing circuit.

The ZE2531 Isolation Transformer from Coilcraft is designed to provide galvanic isolation for Single Pair Ethernet (SPE) ...