• State TI Thinks Resolved
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 38 subscribers
  • Views 80 views
  • Users 0 members are here
Support feedback
Options
Options
Related

LM5146-Q1: LM5146QRGYTQ1 - Schematic Verification

Muthukrishnan M
Prodigy 10 points
Part Number: LM5146-Q1

Tool/software:

   

Hello TI Team,

I’m requesting a quick design review for my LM5146-Q1 synchronous buck controller. The application is automotive. Details and files are below. Please let me know if you see any issues or have recommendations.

Thank you!

— Muthukrishnan
Embedded Engineer, Dotworld Technologies Pvt Ltd

  • 0
    TI__Guru 73952 points

    Hello,

    I recommend filling out the quickstart calcualtor as well to check your design, particularly power losses and compensation.

    1. No need for diode D2.
    2. Add local cap at the VIN pin.
    3. The VCC cap should be 0603 or 0805 and placed close to the IC. No need for 100V rating (large cap).
    4. The NC pins can be grounded for better heat spreading.

    Regards,

    Tim