Wolfspeed Power Applications Forum

Wolfspeed Technical Community:

SpeedFit™ Design Simulator

Simulate and evaluate the performance of SiC-based power circuits and determine the right SiC device in seconds.

Start a Simulation

Categories

PLECS thermal description for CAB3R5M12DM4

Options
Mikesim
Mikesim Contributor Level 1
in Module Products

I'd like to know if there's a suitable PLECS thermal description model (.xml file) for the

Comments

  • Forum_Moderator
    Forum_Moderator Wolfspeed Employee - Contributor Level 5
    Options

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

  • Mhusain
    Mhusain Wolfspeed Employee - Contributor Level 2
    Options

    Hello,

    I have attached the PLECS thermal description (.XML) file for the CAB3R5M12DM4. Additionally, you can download our PLECS and LTspice models directly from our website:

    LTspice & PLECS models | Wolfspeed

    CAB3R5M12DM4_bodydiode.xml
    CAB3R5M12DM4.xml

    If you need any further assistance or have any questions, please don’t hesitate to reach out.

    Thank you!

  • Mikesim
    Mikesim Contributor Level 1
    Options

    Thanks, I've been having problems using this with PLECS 4.7.5. PLECS doesn't recognise it in the library. Is this a known & intended issue?

  • Mhusain
    Mhusain Wolfspeed Employee - Contributor Level 2
    Options

    Hello Mikesim,

    Thank you for the question! The model shared is designed to be compatible with PLECS version 4.8 and above, as these versions support 4D-LUTs for switching loss, providing enhanced accuracy. Unfortunately, this compatibility issue is known when using PLECS 4.7.5.

    It would be helpful to know why updating to the newer version of PLECS is not possible, as doing so could greatly improve the experience with the model and its functionalities.

    If there are any further questions or assistance needed, please feel free to reach out!

    Thank you

  • Mikesim
    Mikesim Contributor Level 1
    Options

    Ok thanks,

    (probably best not post this message on the forum I guess)

    I'll update to the new version as soon as there's budget available. I need to do this as I know Jost Allmeling and Wolfgang from years ago and it's embarassing not having an up to date licence ;)

    In the mean time, if you do have a few mins to see if it's possible to output a backwards compatible model that would be helpful. If not, maybe you could raise a ticket to ask the relevent people to make it more obvious which plecs versions the models work with that would help people save a lot of time.

    If you need to add weight to the argment, mention that I've just got out of a meeting with Ian & Juan from Woolspeed about collaboration etc.

    Cheers
    Michael

  • BlakeNelson
    BlakeNelson Wolfspeed Employee - Contributor Level 3
    Options

    Hey Michael,

    I've created a version of the model with a 3D switching loss table and confirmed it works in v4.7.5.

    2025-09-23 CAB3R5M12DM4 (3D Loss Table).zip

    If you are using Rg = 0/0Ω, this model will be identical to the one shared previously, though it will be slightly less accurate for other Rg values.

    I've also included a "MOSFET with Diode" version of the model which includes the diode losses in the same model as the MOSFET (though you can also use the legacy models if you'd like to compare more easily to a different Wolfspeed model). We'll soon be launching a new version of our library with all our parts in this combined format. In the meantime, if you have a specific device you need in this format, let me know and I can provide it.

    Thanks,
    Blake

    Mikesim
Sign In or Register to comment.