Quantcast
Channel: Motor drivers forum - Recent Threads
Viewing all articles
Browse latest Browse all 14309

DRV8323: Gate ringing question

$
0
0
Part Number: DRV8323

Hello TI experts, I was measuring both high-side gate and low-side and found ringing in both of them.


Given the following parasitic equivalent circuit you can see that when the high side fet is closed, some current can flow through the low-side Cgd parasitic capacitor.

This would induce a voltage in the low-side gate and proceed to cause a shoot through

But the phenomenon I'm experiencing is different. The induced voltage in the low side gate has an opposite polarity to the high side Vgs.

(Red is high side, blue is low side)

So I don't really understand where this ringing is coming from, have you ever seen something like this before?

Thank you very much!


Viewing all articles
Browse latest Browse all 14309

Latest Images

Trending Articles



Latest Images

<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>