switching losses C3M0021120K MOSFET

christianA

Hi Wolfspeed Team,

I would like to contact you because I used the "speedfit design simulator" tool to simulate the losses for the SIC C3M0021120K in a "classic BOOST" application. I obtained very satisfactory losses and in conjunction with the PSIM software. So, it's perfect. However, I have a question regarding switching losses. In a real application, by how much I can increase the switching losses compared to the simulation. I know that this takes into account a lot of parameters such as the quality of the board routing. but if I could have an approximation in % compared to your feedback, that would help me. In advance, thanks you

Forum_Moderator

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

Urvi_Ahluwalia

Hi christianA,

You are correct, in a real system the switching losses will depend on parameters like the quality of board layout, parasitics and other system specifications. I don't have a recommendation for any switching loss scaling factor as it depends highly on such factors.

SpeedFit is great at comparing different devices and topologies. However, it only evaluates the semiconductor losses in an ideal circuit - based on loss data from datasheets. Please refer to the following post for more information about SpeedFit: https://forum.wolfspeed.com/discussion/132/faq-sf-1-introduction-to-speedfit#latest .

Thanks,

Urvi

TBhatia

Hi, I hope that this answered your question. I will close this discussion for now but if you have a follow up question, please "Start a New Discussion" and we would be glad to support you further.