• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 64 subscribers
  • Views 467 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.

TPS63031: Why the TPS63031 is showing VOUT = 1V when the ENABLE PIN is set LOW (shutdown mode) ?

Samir samir
Prodigy 20 points
Part Number: TPS63031

Hi Support,

We found out that our BuckBoost (TPS63031) is showing 1V output voltage when we set the ENABLE PIN to LOW. As showed in the datasheet, the shutdown mode is set when the enable pin is low. 

Our design is as below:

Thanks you.

  • 0
    TI__Mastermind 20900 points
    Hello Samir,

    as soon the output capacitors are discharged you should measure 0V, if EN=Low.
    Does this phenomenon happen on multiple devices?
    Could you share the layout for a cross check?
    Do you have any output load attached?

    I see there is a 75Ohm resistor between VIN and VINA. Please remove this as it is not needed. The TPS63031 has an internal 100ohm already.

    regards,
    Julian
  • 0
    TI__Expert 7925 points

    Hi Samir,

    Were you able to resolve your problem?

    If not, could you please answer to the questions Julian posted?

    Best regards,
    Milos

  • 0
    TI__Expert 7925 points
    Hi Samir,

    We haven’t heard back so we're assuming you were able to resolve your issue. If not, just post a reply below, or create a new thread if the thread has locked due to time-out.

    Thanks,
    Milos