• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 368 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS25750: Sink Only Application 100W and use with TPS55289

Terry Gould
Prodigy 105 points
Part Number: TPS25750
Other Parts Discussed in Thread: TPS55289, BQ25731

We are considering using the TPS25750 in a sink only application, with 100W (5A 20V) PD. 

USB 3.2 only
Battery-less application powered from another USB Sink only port using the TPS25730D

1. Is it possible to use the TPS25750D in a 100W source application (DFP) using the internal power path?

2. is it possible to control the TPS55289 via I2C directly using the TPS55289 with no MCU?

    2.1 Do you have any examples?

    2.2 If possible can we use the online config. GUI? I cant see any way of doing so, if possible how?

3. Is this the best approach for a USB3.2 100W Source only USB-C port?

Another question for the same product but another application:

4. We have another source only port so above questions remain. But this port will be Displayport only, no USB, so we only need the FLIP function, is it possible to use the TPS25730D in a Displayport Only USB-C source application?

  • 0
    TI__Genius 12905 points

    Hello!

    Terry Gould said:
    1. Is it possible to use the TPS25750D in a 100W source application (DFP) using the internal power path?

    TPS25750D is meant for sinking only. Not Sourcing. 

    Terry Gould said:
    2. is it possible to control the TPS55289 via I2C directly using the TPS55289 with no MCU?

    We currently support the BQ25731 not the TPS55289 for this part. 

    Terry Gould said:
    3. Is this the best approach for a USB3.2 100W Source only USB-C port?

    TPS65992 devices would be good choice for Source and Sink with USB3.2 support. 

    Terry Gould said:
    4. We have another source only port so above questions remain. But this port will be Displayport only, no USB, so we only need the FLIP function, is it possible to use the TPS25730D in a Displayport Only USB-C source application?

    TPS25750 does not support DP mode. 

    I think you will need to look into the TPS65992 device family. Request access using this link:

    www.ti.com/.../swlicexportcontrol.tsp

  • 0 in reply to Christodulos Tsongas
    Prodigy 105 points

    Hi Christodulos, 

    I am not sure about this being a sink only device, there are multiple references to sourcing and bidirectional power path in the datasheet. 

  • 0 in reply to Terry Gould
    TI__Genius 12905 points

    Terry,

    I did get confused. TPS25750D can support VBUS in both directions. 

    But TPS55289 is not currently supported. 

    Thanks,

    Chris

  • 0 in reply to Christodulos Tsongas
    Prodigy 105 points

    Ok no problem, 

    Since the initial post we have found that we have no need for the TPS55289 so are still interested in the TPS25750D so the questions remain:

    1. Is it possible to use the TPS25750D in a 100W source application (DFP) using the internal power path?

    2. We not intend to use this device in a USB compliant Displayport Alt-mode application, rather the intent is to have a displayport only USB-C port, with this in mind, is it possible to use this device to control a mux to flip the lanes. In my mind the TPS25750D will be oblivious to the fact that this is a display port application and will flip the mux depending on the orientation of the cable. 

     

  • 0 in reply to Terry Gould
    TI__Genius 12905 points
    Terry Gould said:
    1. Is it possible to use the TPS25750D in a 100W source application (DFP) using the internal power path?

    Yes you can. 

    Terry Gould said:
    2. We not intend to use this device in a USB compliant Displayport Alt-mode application, rather the intent is to have a displayport only USB-C port

    This requires USB-PD protocol. USB-PD protocol means the need to send an Enter DisplayPort message and telling connected device what settings it supports. TPS25750D does not support this.