Inquiry on the Source of Parasitic Inductance Parameters in Wolfspeed LTspice Module Models

jlayf

Dear Wolfspeed Technical Support Team,

Hello,

I am currently using Wolfspeed LTspice power module SPICE models (PRD-07913) for switching transient and layout-related analysis.

I understand from the documentation that the package-level models include detailed parasitic elements, and that these parameters are intended to represent the internal module parasitics.

However, I could not find a description of the data source for these parasitic inductance values in the official models. At a high level, could you please clarify whether the default parasitic parameters in the LTspice power module models are obtained mainly from:

• 3D electromagnetic simulations of the module package (for example, Q3D or similar tools),
• Experimental measurements using dedicated test fixtures on physical modules.

I am not requesting specific parameter values or proprietary modeling details. Understanding whether the internal parasitic parameters are primarily simulation-based or measurement-based would be very helpful for assessing model applicability and for aligning the model with our system-level parasitics.

Thank you very much for your time and support.

Best regards,

jlayf

Forum_Moderator

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