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TUSB320: TUSB320

michael nudelman
Intellectual 620 points
Part Number: TUSB320
Other Parts Discussed in Thread: , HD3SS3220, , TPS25910, TUSB422

This is to revive my previous thread, as it seems it's not getting any more answers.

Above the hub diagram I am trying to implement, I am not sure what to do here.

First, I have received the TUSB320EVM only to have read the manual and found out I need more than one EVM to even use it. Or am I being wrong? i cannot make a USB-C tablet to charge through it no matter what I do with configuration, or ID pin on the header. I was under impression the chip plus power switch should work to at least try to charge.

Second, I am not sure (after looking at the HD3SS3220, the chip recommended by the TI person who answered the previous thread) how to use it together with the TUSB320 to create a high current charging hub, the block diagram for which I showed in the beginning of the thread.

Could  someone please provide a bit more detailed answer to this? Considering I do not have a whole lot of time to experiment, build a proto and find out it does not do what I hope it would? I am not very experienced in USB charging hub apps.

PS. I am trying to look through that manual for the TUSB320EVM.

The power diagram at the page 9 (DC_IN and uAB_VBUS diode-ORing into the TPS2590) doesn't seem to agree with how the schematic is, where the micAB_VBUS is the diode-ORed result of the TypeC_VBUS and DC_IN which then go to the TPS2590.

Best,

Mike.

  • 0
    TI__Genius 16150 points
    Hi Mike,

    You do not need 2 TUSB320EVM to test the device, this evaluation board can be connected to a UFP/DFP/DRP device and monitor the status of the device through I2C registers or even in GPIO mode the different current profiles.
    On the other hand, if the HUB is going to use both features at the same time (USB Type-C Charging and USB Type C port for device slave), the HD3SS3220 is not the best solution, so, in this case you would need 2 TUSB320, one of them to control the USB Type-C Charging and other one for manage the USB Type-C slave device.
    As well, the recommended devices are the TUSB320LAI/HAI in comparison with the TUSB320 have a better power consumption.

    Best Regards,
    Luis Omar Moran
    High Speed Interface
    SWAT Team
  • 0 in reply to Luis Omar Moran
    Intellectual 620 points
    So, considering the TUSB320EVM right now does not charge my port C tablet, no matter what mode I put it on, what could I do? I tried to use both computer as the charging source and a 5V supply that charges the tablet when connected directly but does not when connected through the EVM.
  • 0 in reply to michael nudelman
    TI__Genius 16150 points

    Hi Mike,

    The TUSB320 does not support power delivery, hence this one won't provide the different current profiles for power delivery spec. This device only advertises the different current profiles (low=900mA, mid=1.5A, high=3A). The power is provided by the host not for the TUSB320. The purpose of the TUSB320EVM is to verify the correct performance of the device, hence, in your application you will not able to use the TUSB320EVM to verify the charging. As you know, the power to charge the devices (in your case the tablet), is provided by the host through VBUS.

    Best Regards,

    Luis Omar Moran

    High Speed Interface

    SWAT Team

  • 0 in reply to Luis Omar Moran
    Intellectual 620 points
    I do not understand then why the board has the power switch. I am asking a simple question: could you help me understand what I need to do to charge the device and also create that hub? We are going in circles and the answers I get seem to be like hints: I need more than that.
  • 0 in reply to michael nudelman
    TI__Genius 16150 points

    Hi Mike,

    Sorry for the confusion. The TUSB320 does not provide power delivery, this is the reason the TPS25910 is placed in the EVM (power switch). How are you setting the SW1? Could you provide your configuration for this switch? I checked with the TUSB320HAEVM, and connected a cell phone, it is charging.
    On the other hand, for your application, is not possible to meet your requirements with the TUSB320, because this application requires power delivery, I mean, you need a device that supports power role swap, between USB data and power charging. Hence, with the TUSB320 is not doable.
    In conclusion, the TUSB422 meets your requirements. Please take a look into this device.

    Best Regards,
    Luis Omar Moran
    High Speed Interface
    SWAT Team

  • 0 in reply to Luis Omar Moran
    Intellectual 620 points

    Luis,

    This

    >>> is not possible to meet your requirements with the TUSB320, 

    contradicts this

    >>>Hence, with the TUSB320 is doable.

    SW1 I set to "ON" as this seems to be the low "~EN" for the chip itself.

    Mike.

  • 0 in reply to michael nudelman
    Intellectual 620 points

    Also, I do not see TUSB422 EVM being sold. I found the user guide for it, but it is nowhere to be found.

  • 0 in reply to michael nudelman
    TI__Genius 16150 points

    Mike,

    This EVM is not longer available to purchase. 

    Regards,

    Luis