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TPS25740: usb 2.0 with PD for samsung galaxy S8 design

hezi nistani
Prodigy 110 points
Part Number: TPS25740
Other Parts Discussed in Thread: TUSB8044, TUSB321, , TPS65981

Hello,

We are working on a new design with  Galaxy S8 (as a host) and we using USB 2.0 \ 3.0  interface with it and the USB HUB (TUSB8044) by a Type C connector.
 
We need to add a Power Delivery for charging the phone with data transfer at the same time.
we already tested the TUSB321 and it's not working....
Can you help us define the correct chip using the in this project? 
We found the TPS25740 option - can you approve if it's good for our needs? 
 
http://www.ti.com/lit/ds/symlink/tps25740.pdf
 
 
attached PDF - "HW_block diagram_Description" of our project.
 
HW_block diagram_Description.pdf
  • 0
    TI__Mastermind 30000 points

    Hello Hezi,

    I took a look at the hardware block diagram that you sent and have a few questions. How many USB Type C connections are you wanting to use? I see the "USB HUB" with a smart phone connection coming from it. I'm assuming this will be a Type C connection.

    However, you also have these external USB ports. Were you also wanting to connect these external USB ports to the "USB HUB" via Type C PD?

  • 0 in reply to Adam Mc Gaffin
    Prodigy 110 points

    Hi Adam,

    We using just one type C connector.
    From the USB HUB to the phone, all the rest connectors are type A USB connectors.

  • 0 in reply to hezi nistani
    TI__Mastermind 30000 points

    Hezi,

    Since y'all are wanting to connect a phone, and have the ability to both power the device as well as transfer data, I do not believe the TPS25740 is a good choice. That device is intended for applications that are data-less (dedicated charging port, power bank, etc...). Since you are wanting to transfer data, you will need a multiplexer within the design to help detect to cable orientation and change the connections accordingly. The TPS25740 does not have this ability.

    A part you may want to look at is the TPS65981. The part itself has an internal USB 2.0 MUX as well as GPIO control capabilities to be connected to a USB 3.0 MUX. This chip also gives you the ability to use Type-C PD alternate modes.

    If this answers your question, PLEASE select  This resolved my issue