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TPD3S714-Q1: TPD3S714-Q1 VBUS_CON and VBUS_SYS design question

user4979899
Expert 3080 points
Part Number: TPD3S714-Q1

Hi Sir,

Could you please help to clarify below questions?

Thanks

(1)  VBUS_SYS(PIN14/PIN15) is used as INPUT and  VBUS_CON(PIN2/PIN3) is used as OUTPUT ?

(2)  Is the VBUS path current direction flow from VBUS_SYS(PIN14/PIN15) to VBUS_CON(PIN2/PIN3) ?

(3)  If VBUS_SYS is supplied from device internal 5V , and VBUS_CON is connected to 5V from another device via USB connector, is it ok ?

 


  • 0
    TI__Expert 8420 points
    Hi Wu,
    We are find the answer for your question, will feedback to you soon.Thanks!
  • 0 in reply to Michael Tan
    TI__Expert 3080 points

    Hi Michael,

    Please feedback once you have any update.

    Thanks

  • 0 in reply to Michael Tan
    TI__Expert 3080 points
    Hi Michael,

    Still waiting for your feedback, is there any update?

    Thanks
  • 0 in reply to user4979899
    TI__Expert 8420 points
    Hi Anne,

    Sorry for the late response. Pls find my comment as below :

    (1) VBUS_SYS(PIN14/PIN15) is used as INPUT and VBUS_CON(PIN2/PIN3) is used as OUTPUT ?
    Yes, the VBUS_SYS is for 5V power in and VBUS_CON is for USB type A port BUS pin.

    (2) Is the VBUS path current direction flow from VBUS_SYS(PIN14/PIN15) to VBUS_CON(PIN2/PIN3) ?
    Yes, the direction is from SYS to CON.

    (3) If VBUS_SYS is supplied from device internal 5V , and VBUS_CON is connected to 5V from another device via USB connector, is it ok ?
    VBUS_SYS is generally connect the 5 V system power supply (DCDC output ) ,VBUS_CON connect to type A port BUS pin. The devcie will provide current limit , short to battery and ESD protection for the 5V rail in power system .