TUSB8041: Maximum current per port

Seishin

Genius 4135 points

Part Number: TUSB8041

Hi,

When using with bus power, what is the maximum current per port?

Is the following system configuration possible?

HOST(USB3.0) Bus power →　TUSB8041　→　Load: Keyboard(50mA) and Numeric keypad(500mA)

Best regards,
Seishin

over 8 years ago

0 Elias Villegas M. over 8 years ago

TI__Guru* 76130 points

Hello,
When in bus power mode, the Hub may not draw more than 900mA from the upstream port, I guess these downstream devices are USB2.0, if you look at the power consumption table in the datasheet (Section 7.7) you can see the system should be fine.
Nerveless, I recommend you to make some tests first to make sure the power consumption is on budget.
regards

0 Seishin over 8 years ago in reply to Elias Villegas M.

Genius 4135 points

Dear Elias,

Thank you for your reply.

I understand this matter.

Best regards,
Seishin

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TUSB8041: Maximum current per port