ANP025: Selecting and Using Ferrite Beads for Ringing Control in Switching Converters

RE: ANP025: Selecting and Using Ferrite Beads for Ringing Control in Switching Converters

e14 Contributor — Mon, 25 Jul 2016 10:00:34 GMT

Made a project with te LTC3703EGN-5 and placed R2 (Wurth 742792693) as you advice. It destroys the LTC3703 immediately. Removed the inductor R2 and placed a 0R and its working fine for days at 4A load. Tried this on two pcb's withe the same effect.

Input voltage 15V

output voltage 12V

Load 4.1A

RE: ANP025: Selecting and Using Ferrite Beads for Ringing Control in Switching Converters

sleuz — Fri, 04 Dec 2015 07:38:39 GMT

Great to hear this is of help for you guys.

Feel free to "spread the word" and share this content.

Simon

RE: ANP025: Selecting and Using Ferrite Beads for Ringing Control in Switching Converters

mcb1 — Fri, 04 Dec 2015 04:50:00 GMT

Very interesting Simon.

Thanks I've also bookmarked it.

Mark

RE: ANP025: Selecting and Using Ferrite Beads for Ringing Control in Switching Converters

jw0752 — Thu, 03 Dec 2015 17:03:51 GMT

Thanks Simon,

I always learn a lot from your informative articles. I have bookmarked this one so I can find and study it more thoroughly in the future.

John

RE: ANP025: Selecting and Using Ferrite Beads for Ringing Control in Switching Converters

DAB — Wed, 02 Dec 2015 20:16:18 GMT

Excellent post.

I think all of the budding makers here on Element 14 should read through this description of ringing and how to use ferrite beads to limit their effect in your circuits.

DAB