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Original question:

TINA/Spice/TPS2513: Invalid device: $CDNENCSTART. Line #42. for the TPS2513 pspice file.

UCC28950: UCC28950

Jacobo
Prodigy 225 points
Part Number: UCC28950

Tool/software:

Hello team!

I’ve been trying to simulate the UCC2895x Phase-Shifted Full-Bridge Controller across three different simulators—TINA, LT, and PSiM—using the spreadsheet SLUC222D, but I haven’t had any luck so far.

The design constraints are as follows: Vin at 700Vdc (ranging between 680 and 720), with an output of 80V @82.5A (6.6kW).

First off, both LT and PSiM consistently throw up several errors, all beginning with the same message: "Expected directive or device instantiation here. $CDNENCSTART." I’ve noticed a similar unanswered question at this link (e2e.ti.com/.../tina-spice-tps2513-invalid-device-cdnencstart-line-42-for-the-tps2513-pspice-file), and I’m hopeful that I’ll have better luck with you all.

As for TINA, it seems I can’t push the output voltage beyond 30-40V, which leaves me unable to verify whether your controller will meet my needs.

I’d appreciate your assistance in resolving this issue.

Thank you!

UCC28950_START_6.6kW.TSC

LT_PSim.rar

  • 0
    TI__Guru* 85896 points

    Hello,

     

    Your inquiry has been received and is under review.

     

    Regards,

  • 0 in reply to Mike O'
    TI__Guru* 85896 points

    Hello,

     

    The following link will bring you an application note that goes through a phase shifted full bridge design using the UCC28950.  This file was use to design the UCC28950EVM-442 600 W reference design and the excel design tool you mentioned. 

    https://www.ti.com/lit/an/slua560d/slua560d.pdf

     

    User’s guide for the UCC28950 600 W design can be found at the following link.

    https://www.ti.com/lit/ug/sluu421a/sluu421a.pdf

     

    There is a Tina model and TI PSpice model that is available the UCC28950 design tools folder.  They are both working models of a power stage and have already been debugged.  You can down load Tina and TI PSpice simulators from ti.com for free.  Using the application note and excel tool you can modify these simulation files to simulate your power supply design.  You can find both of these at the following link.

    https://www.ti.com/product/UCC28950#design-tools-simulation

     

    We do not have an LT Pspice or PSim model for the UCC28950 controller. I would recommend using the Tina or TI PSpice model that is on ti.com to save time in your modeling and debug process.

    Thank you for interest in Texas Instruments (TI) products.  If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

     

    Regards,