• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 92 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

LMG3422R030: How significant is slew rate in affecting switching loss?

Cameron Wutzke
Intellectual 2001 points
Part Number: LMG3422R030

Hi all!

According to section 10.2.2.1:

How much will the switching loss change from 20V/ns to 150V/ns?

Thank you,

Cameron

  • +1
    TI__Intellectual 1630 points

    Hi Cameron, the exact numbers for switching loss when comparing multiple slew rates will vary depending on topology, but as a reference, the trend is very much linear. A slew rate of 20V/ns will have double the switching losses when compared to 40V/ns and so on. We have multiple power loss calculators on our website which allow you to change single parameters such as slew rate and see how they affect the switching loss of your topology, I have included one below for a CCM Boost PFC.

    https://www.ti.com/lit/zip/snor029

    Hope this helps,

    Zach