The output characteristics of the SPICE model are inconsistent with the transfer characteristics.

Hippo

I used the DC sweep function of LTspice to obtain the output characteristics and transfer characteristics of C3M0040120K. I found that the output characteristics obtained from the simulation perfectly matched those in the data sheet, while the transfer characteristics obtained from the simulation had a significant deviation from those in the data sheet. Could you please explain why this is the case? Is it possible that there is a difference between the output characteristics in the data sheet and the professional characteristic testing method?
Figure 1 and Figure 2 show the transfer characteristics and output characteristics obtained through simulation. Figure 3 is a graph where the output characteristics and transfer characteristics from the data sheet are plotted together after sampling points. However, I found that the transfer characteristics cannot correspond to the extension lines of the output characteristics.

Forum_Moderator

Thank you for your post, it has been approved and we will respond as soon as possible.

TBhatia

Hello,

The updated model has been provided on the post below, therefore closing this post.

https://forum.wolfspeed.com/discussion/1047/the-transfer-characteristics-of-the-spice-model-do-not-match-those-described-in-the-data-sheet