Other Parts Discussed in Thread: TUSB8044A
Tool/software:
Hello,
From the TUSB8044A EVM documentation:
The TUSB8044A EVM operates from the power provided by a 5-V wall power adapter, J6, not bus power supplied by a USB host. TI recommends to use a wall power adapter that is capable of sourcing 2 to 3 A because the hub must be able to source significant power on its downstream ports (900 mA per port).
I'm wondering why the recommendation is sourcing 2-3 A specifically? If there are 4 USB-A 3.2 ports downstream, would they not need ~3.6A total to be powered fully?
Is the recommendation under the assumption the USB ports are never at max load?
Thanks in advance for any answers.