TIDA-00287: USB 3.0 (or 3.1 gen1) hub design, but with 3.0A current support

Kei Kim

Part Number: TIDA-00287
Other Parts Discussed in Thread: HD3SS3220, 3220UFP-DGLEVM

Hi,

We are trying to find the reference design to build our own USB-c input, USB 3.0 two output port hub.

The closest thing that we can find is TIDA-00287(https://www.ti.com/tool/TIDA-00287)

However, due to the power requirement(3A vs 900mA), we cannot use this design as is.

Is it possible to modify the design on our side somehow, so that it can use the maximum power that USB-c draw?

(e.g. without PD 5V 3A)

What we want is the hub with one usb-c input and one USB 3.0 port output and one USB 2.0 port output.

Some of the input wattage will be used for other LEDs and ICs. The maximum power usage will be 15W (5v 3A).

In this design requirement, where should we start from?

+1 Brian Zhou over 2 years ago

yes, you can add CC controller like TUSB320A ( or HD3SS3220 ) and configured as UFP.

Regards

Brian

0 Kei Kim over 2 years ago in reply to Brian Zhou

Hi,

By following your second recommendations(HD3SS3220), I'm looking at this EVM which uses the same chip.

So you mean that if I connect the TIDA-00287 to the 3220UFP-DGLEVM I can draw 3A through V bus, if cc agrees 3A (two leds lit)—is it correct?

In that case, let's say if I connect TIDA-00287 and 3220UFP-DGLEVM. We want to add use the V bus power to lit some LEDs.

1A. Should I draw parts of the 3A current by directly connecting to the V-bus and GND at the USB Type-C Receptacle?

1B. or is it ok to draw more current through the USB-A Receptacle on the right side?

2. Is it ok connecting LEDs directly in this way—do I need to add something more?

Thank you

+1 Brian Zhou over 2 years ago in reply to Kei Kim

1A: yes, LED will draw part of 3A current from Vbus.

1B: TUSB8020 draw current much less 3A, so you have more room

2: should be ok

Thanks

Brian

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