• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 63 subscribers
  • Views 608 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.

TPS735: TPS73533 random shut down problem

Nikos Zempilis
Prodigy 40 points
Part Number: TPS735

 
Hello.

 I have designed the above circuit using TPS73533 3.3V fixed version. The design is in a quite noisy PCB with 3 other power circuits. After some hour of working, while testing one of the close power circuits with a high transient load, TPS73533 shuts down randomly. 

Could you guide me on what things to check in order to solve the problem?

  • 0
    TI__Guru 55940 points

    Hi Nikos,

    In order to help debug we will need a multichannel scopeshot showing Vin, Vout, Vnr, and if possible Iout triggered on the regulator shutting down.  We want to see the relationship between these rails (and output current if possible) right before the TPS735 shuts down.

    Very Respectfully,

    Ryan

  • 0 in reply to Ryan Eslinger
    Prodigy 40 points

    Hi Ryan

    Thank you for you answer. It seems that I am having a more complex problem with the rest of PCB, probably EMI related, so I must investigate more.

    I will close the thread for now. Than you again for your time.