I'm designing a board based on a USB Hub HS 2.0 that has five permanent attached ports, two of them with a high current consumption (180 mA typical, 250mA max. per device).
I would like the board to work just using an USB Type C port as the power source.
I've chosen a USB2517 from microchip, and I'm having some issues with the design (and my knowledge about the USB standard):
If I use a bus powered USB 2.0 design, as my devices will probably draw more than 500mA they won't work as expected, right?
Can I use 5k1 CC resistors and power the USB Hub as it was a self-powered hub rather than a bus-powered one? Will this work besides having a 2.0 USB Hub?
I'm having doubts about the power distribution to the downstream ports. I've chosen a ganged configuration but I'm not fully sure. If my devices are permanent, should I use individual current sense and power control or using a ganged ports control is correct?
Thanks in advance!