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TUSB320LI: USB 2.0 implementation with USB C port

Gijs den Butter
Prodigy 20 points
Part Number: TUSB320LI
Other Parts Discussed in Thread: TUSB320

Hello,

For a design I would like to integrate a USB C port, because i would like to draw 2-3amps from the port. The microcontroller (ATSAMD21J18A) has native support for USB 2.0.

Is the TUSB320LI the correct chip to use? The port will always be upstream facing. 

Thanks in advance!

  • 0
    TI__Genius 16150 points

    Hi Gijs,

    The TUSB320 is able to support up to 3A of current advertisement and detection, this device is not able to provide it, I mean, this device does not support power delivery. Could you clarify if you are looking for a port controller that supports power delivery feature?

    Thanks,
    Luis Omar Moran
    High Speed Interface
    SWAT Team

  • 0 in reply to Luis Omar Moran
    Prodigy 20 points

    Hi, thank you for the reply. Let me clarify with a schematic.

    J1 is a USB C connector, U2 is the TUSB320LI. The ATSAMD21J18 is connected to the 3v3 rail, and the USBDM and USBDP lines.

    In this schematic I expect to draw around  2 - 3 A, from the Vin rail with U3. This device will always be pulling current from the USB port, and never supply it. 

    What I'm looking for is a port controller which can negotiate and request for 5V and 3A of current from the host device. Does the TUSB320 fit this role?

  • 0 in reply to Gijs den Butter
    TI__Genius 16150 points
    Hello Gijs,

    According your schematics, the TUSB320 fits your requirements, in this case the device will be configured to support 3A (High Current mode).

    Best Regards,
    Luis Omar Moran
    High Speed Interface
    SWAT Team