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UCC21750: Unencrypted PSPICE Transient Model

Nam, Dino
Expert 6445 points
Part Number: UCC21750

Dear team, 

The customer have imported UCC21750 unencrypted PSPICE Transient Model(SLUM718) to PSIM tool and cadence PSPICE tool and can get like below image. 

but the port number and name is different from datasheet. is it right? The encrypted model is same to datasheet. 

If the below image from UCC21750 unencrypted .lib file is right, Is there any reason why you made it different? and Is there any problem with simulation? 

<Datasheet> 

Thank you. 

  • 0
    TI__Genius 13760 points

    Hi Dino,

    The pins are not located in the same position as the actual device, but will still have the functionality of the pin name(e.g. OUTH is still OUTH, OUTL is still OUTL: they're just in different positions).

    When someone downloads the encrypted version of the model and runs it on PSPICE it comes with a .olb file which is the symbol associated with the .lib file. This .olb file is already configured to put the pins in the correct positions.

    When importing the un-encrypted .lib file to another modelling tool the modeling tool there is no associated .olb file so the software will likely automatically create a symbol. This symbol should be able to be edited through the software to at least separate primary and secondary pins.

    I would recommend the customer looks into resources for the modelling tool they're using too see how the symbol can be edited. 

    Best regards,

    Andy Robles

  • 0 in reply to Andy Robles
    TI__Expert 6445 points

    Hi Andy,

    Thank you for your kind explanation. 

    For clarify, If the customer use another modeling tool not PSIPCE for TI, they have to use un-encrypted .lib. Is it right? 

    The encrypted version is only for PSIPCE for TI. Is it right?

    Please let me know your opinion. 

    Thank you.

  • +1 in reply to Nam, Dino
    TI__Genius 13760 points

    Hi,

    The encrypted version should work in any PSPICE environment (PSPICE for TI or full version of PSPICE).

    If they're using a different modelling tool that is not PSPICE then they would have to import the un-encyrpted .lib file.

    Let me know if there's any other questions!

    Best regards,

    Andy Robles