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LTspice IV

Otto Sommerlat
Prodigy 10 points
Other Parts Discussed in Thread: TINA-TI

Are TI spice models also for use in LTspice IV?

  • 0
    TI__Mastermind 41310 points

    Otto,

    LTSpice allows the import of some PSpice models, which TI provides. There are several things that you must be aware of before using the models in LTSpice. First, many of the Power models are encrypted and can only be used in PSpice version 15.7 or higher. Next, the unencrypted models that may be used in other spice simulators have only been tested in PSpice or TINA-TI. Some issues may arise as many tools do not support all PSpice model aspects.

    Further, the LTSpice EULA does not allow TI or any other semiconductor vendor to use the tool for their devices. So, if you do import TI models into LTSpice, TI is not allowed to assist you with the model and any issues you may encounter.

    TI may require an NDA in order to access unencrypted models for devices that have encrypted models in the product folder.

  • 0
    TI__Guru 71536 points

    Hello Otto,

     First, I moved this request to the Simulation Models Forum.

    To answer your question, generally you cannot use the PSPICE or TINA model provided with a specific device, available on the device Product Folder page, in LTSpice.  The reason is that the models TI provides are encrypted to protect the design structure.  You can request an unencrypted model, but only under NDA.  See, for example, this E2E post discussing this, refer to the last entry in this thread: https://e2e.ti.com/support/development_tools/webench_design_center/f/234/t/225538 .

    Note also that we are not allowed to support LTSpice per their EULA.  Also note that LTSpice has a HELP section in their User Guide for importing other models such as PSPICE and TINA.  Also note that in some of the aforementioned Product Folders, unencrypted models are available, as released by the Product Group handling that particular device.  You will have to look at each Product Folder page for each device you are using to determine this.

    Finally, you could use TINA  for all your simulations, thereby bypassing the need for another model.  Also, WEBENCH has some simulation models for certain power devices; I invite you to investigate for the devices you are planning to use.

    ~Leonard  

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