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TMUXHS4212: USB Y-Splitter

Gerardo Vanoni
Prodigy 240 points
Part Number: TMUXHS4212

Hello
A customer of us needs a special USB 3.1 Gen2 - Y-splitter (for power and data), as described below.


The application is for a device (camera?) which should be connected and supplied via USB (up to 45W, up to 10GBit/s).

This device is normally connected to a docking station (with data / power), until a robot arm arrives, connects its USB to the device and picks the device away from the docking station.

While mounted on the robot's arm, data and power should also be supplied.

When returned to the docking station, the device should be supplied again from the docking station. It may then happen that, until disconnection of the robot's arm, both (docking & arm) are connected (plugged), but only one (i.e. the docking) should have preference.

Therefore, I'm looking for a solution (IC, eval-board, reference design) to accomplish this task

What solution would you suggest? What parts should I use...?

Many thanks in advance!

Best Regards
Gerardo

  • 0
    TI__Guru*** 144865 points

    Hi Gerardo:

       Since you need 45W, you need two PD controller or duo-PD controller for tyep_C port.

      For USB3 data, do you need to split data between docking station and Robot's arm?

    Regards

    brian

  • 0 in reply to Brian Zhou
    Prodigy 240 points

    Hi Brian

    The USB device (maybe a camera?) has already it's own PD controller. Meaning, I should have some electronic circuit between the USB device and the two upstream links. This electronic should switch the power and the data from one upstream source to the other.

    I was thinking on a relay to mux the power lines and a data multiplexer like the TMUXHS4212 to switch the corresponding data lines. And a small processor or glue-logic to switch the camera from one USB source to the other. The electronic of the splitter would be supplied (Diode-OR) from both sources.

    But hopefully you have a better idea or a suggestion to an eval-board to test this switching task...

    Best Regards

    Gerardo

  • 0 in reply to Gerardo Vanoni
    TI__Guru*** 144865 points

    Hi Gerardo:

          We have TMUXHS4212 to switch USB3 data, but for to switch power, I will assign this ticket to INT-MUX to check if they have mux to switch power.

    Regards

    Brian

  • 0 in reply to Brian Zhou
    TI__Genius 10552 points

    Hi Gerado,

    Our product line is for signal switches, not power switches. Will move this over to their group..

    Regards,

    Alex

  • 0 in reply to Alex Vish
    TI__Guru*** 144865 points

    Hi Gerado:

        You may just submit another E2E and mention you are looking for mux to switch power and see if someone response.

       I will close this ticket now.

       

     Regards

    Brian