• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 135 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.

LMR43620-Q1: Please check the "dead time" of 2 devices.

Chase Jeong
Mastermind 7325 points
Part Number: LMR43620-Q1

Tool/software:

Dear TI experts,

(This question is already posted 2 months ago but no one answered. - https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1481811/lmr43620-q1-please-check-the-dead-time-of-2-devices)

My customer has a question about "dead time".

I found the document below, and it describes "a short delay time is inserted between Q1 and Q2 switch over, which is defined as Dead-time." on page 3.

slua919.pdf

So could you check the dead time of 2 devices below?

  • LMR43620RS5QRPERQ1
  • TPS55289QWRYQRQ1

Best regards,

Chase

  • 0
    TI__Expert 4770 points

    Hi Chase,

    For the devices listed, they are both synchronous converters so we have no way of directly seeing the gate voltages for the two FET's which makes it difficult to get the deadtime of the device. On a controller which has external FET's you can easily see this by looking at the gate drive signals that get sent out externally on pins.

    Thanks,

    Dino