• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 1970 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.

CSD18543Q3A: Continuous drain current question

Will Wang47
Expert 7690 points
Part Number: CSD18543Q3A

Hi Team,

Customer want to use CSD18543Q3A in there project, and they get one question about the "Continuous drain current" spec listed in datasheet. What does it mean by "package limited" or "silicon limited"? Which rating should customer use if they want to use on their board? Hope you could give some comments.

Thanks and best regards,

Will

  • 0
    TI__Mastermind 38100 points

    Hi Will,

    Thanks for the inquiry. We recently updated our MOSFET landing page on TI.com. If you click on the Support & training tab you will find a blog series on Understanding MOSFET Datasheets. There is a blog explaining MOSFET continuous current ratings. Package current rating is a function of the interconnect between the silicon die and the package/leadframe. This can either be wire bonds or copper clip. The CSD18543Q3A uses wire bonding for the interconnect. As explained in the blog, the silicon limit is a calculated quantity. Actual performance in the customer's application is determined by the ambient conditions (temperature and airflow) and PCB design. What is the application and current requirement?

    Understanding MOSFET data sheets, Part 3 - Continuous current ratings
    Welcome back, fellow FET enthusiasts to part three of the " Understanding MOSFET Data Sheets " blog series! Today I’ll be talking about MOSFET current ratings and how they’re not real. Ok, so maybe a better…
    By in Technical articles > Power management