Isolated USB 2.0 HS Hub

A galvanically isolated USB 2.0 HS hub with three downstream ports.

Especially when developing electronics it can be very important to isolate your freshly soldered PCB - that uses USB in some shape or form - from your computer or even power supply. This way voltage spikes cannot reach your computer and it also resolves grounding issues that may otherwise cause measuring errors or even short your PCB to ground through your oscilloscope probe.

This USB hub allows for the full 480 Mbit/s connections to the host for up to three peripherals.

The PCB v3 had an IC with plenty of pins where I mixed up the pin mapping in the footprint. Therefor I had to do some proper bodge wiring and hot glueing:

Also the PCB v3 had a problem with downstream port 1 which resulted in the port only supporting Full and Low Speed (FS / LS).