Request for the Details and Spice model of SiC power module (CAB016M12FM3).

JunMing

Hello, I am using SiC power modules CAB016M12FM3 for an inverter. But I can't find the information about its simulation model and parasitic parameters.So I want to ask the following questions:

Do you have the spice model for this module that I can use in LTspice model or any solution to generate it with the other available spice models?

Do you know the parasitic inductance and the gate resistance of the module?

Feel free to ask any questions and give me any comments.

Bdeboi

Hi JunMing,

We are currently developing new SPICE models for our devices. I've included a preliminary model for the CAB016M12FM3 module in the attached .zip file. There are three example application circuits included as well that should help you get started. The model is encrypted, but if you right-click the circuit block, there are some parameters you can adjust (see the below image). There area also some measurement terminals on the right side of the module you may find useful.

AF - Scales the number of die at each switch position. For example, if set to '2', the number of die at each switch position would be doubled

Rds - Adds an Rds shift to both the high and low switch positions

Vths - Adds a Vth shift to both the high and low switch positions

Tjstart - Sets the initial temperature of the die and baseplate

RSA - the thermal resistance from the baseplate to your coolant

Tcoolant - the temperature of your coolant

To answer your second question, please refer to the datasheet for the stray (commutation) inductance and the internal gate resistance. These values are 11.4 nH and 2.4Ω for the CAB016M12FM3 module.

Please let me know if you have any questions, comments, or issues with the model.

Thanks,

Bdeboi

CAB016M12FM3_PRELIM.zip

JunMing

Hi Bdeboi,

Thank you for your answer. I have some questions about the file.

I'm building an inverter circuit in OrCAD PSpice, and I want to use CAB016M12FM3 in my inverter. But when I opened the file "CAB016M12FM3.cir" with PSpice Model Editor 17.4, it said “Saving new models to it will destroy any of its original contents. Since the library "CAB016M12FM3.cir" does not contain any models.” So I can't convert the .cir file to the .lib file

Do you know what should I do if I want to continue my simulation? Do I need another software to open CAB016M12FM3.cir or the three example application circuits?

By the way, I finally found the stray (commutation) inductance and the internal gate resistance in the datasheet. May I have more detailed information about the inductance of each pin？

Thanks,

JunMing

Bdeboi

The model I provided is specifically for use in LTspice and currently hasn't been developed or tested in other SPICE software. This will be supported in the future, but right now I can't provide a preliminary model in OrCAD. If you can develop your inverter in LTspice, you'll be able to use the model I provided as-is.

As for the parasitic inductance of the module, please see the below circuit. These are not official values, but I have performed some simulations in the past to determine the per-terminal inductance that you may find helpful.

Ld = 7.5 nH

Lp = 4.6 nH

Ls = 3.7 nH

LG1/LK1/LG2/LK2 = 6.45 nH

JunMing

Thank you very much for your help and your patience!