Modelling of SiC module

WZY

Recently, I found that the CSA300M12M3 module does not have an official corresponding Spice model. I would like to know how to generate an accurate and usable model, especially how to obtain parasitic capacitance to ground. It seems that capacitances Cug Gag Clg are difficult to obtain through the data sheet.

Forum_Moderator

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Bdeboi

Hello,

I assume you are referring to the CAS300M12BM2 SPICE model. You are correct in that we do not have models of our gen2 modules available.

While I can't provide a SPICE model of this part, I can help you with the baseplate capacitance. We have an application note (provided below) that provides some insight on how to easily measure the baseplate capacitance without destroying the module (see section 4).

https://assets.wolfspeed.com/uploads/2023/09/Wolfspeed_PRD-07845_Power_Module_Electromagnetic_Compatibiity_Application_Note.pdf

We also provide the baseplate capacitance values in a table in the provided document (see below for the BM modules). For simplicity, the gate capacitances can be lumped with the source node. For example. CG1G can be added to CAG, and CG2G can be added to CLG.

Please let me know if you have any further questions.

WZY

Thanks a lot. I will try.

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.