UCC21736-Q1: How to conduct External Active Miller Clamp in 3 Parallel SIC application with an External Current Buffer

Hi Zhaopeng, 

You can use three separate external Miller clamp FETs to connect to the gates of the SiC FETs. Each SiC FET would have its own Miller clamp FET. We do not recommend connecting the gates of the SiC FETs together and just use one Miller clamp FET for all three, since this can easily lead to oscillation problem. 

Hope that helps! 

Best, 

Vivian

Based oHi Vivian,  thanks for your answer.

n your response, I made the following design, as shown in the image below. Did I understand it correctly?

Thanks for your kindly answer！

best regards.

zhaopeng yan