• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 445 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.

SM72295: used in buck-boost (DC-DC),pins shrot at HOB vs HSB

zaixue Gu
Prodigy 20 points
Part Number: SM72295

  • As the title ，SM72295 used in buck-boost (dc-dc),pins shrot at HOB vs HSB.
  • Design：The grid of all mosfets have no series resistance.
  • possible Resions:EOS damage.(1) over current (2) over voltage
  • test: no over-voltage was observed from Oscillograph waveform

  • 0
    TI__Guru**** 189401 points
    Hi zaixue,

    Welcome to e2e!!! Sorry you are having difficulty in your development process.

    Can you contact your local TI Sales Office to further debug the issue? I assume you worked with them to get this Device Analysis completed.
  • 0 in reply to Don Dapkus
    Prodigy 20 points

    Hi,Don Dapkus

    Thanks for your reply.I have contacted  local TI Sales Office and the picture I provided in the question comes from them.

    Something may help us to analyse the problem.

    SM72295  used in  buck-boost topolo（DC-DC）will break when DC-DC switch on a large load Capacitance suddenly.10% of our DC-DC productions have this problem.

    If you have any idea，you can give me email.

    Best regards