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TINA/Spice/TPS53647: WEBENCH TINA export not working

Carolus Andrews
Mastermind 22395 points
Part Number: TPS53647
Other Parts Discussed in Thread: TINA-TI,

Tool/software: TINA-TI or Spice Models

Hi team,

I recently tried to export a TINA transient simulation for the TPS53647 from WEBENCH for a customer, and could not download it successfully. Each time the download was attempted, around the 97% mark, I was given this error:

Could we get this fixed, or could someone send me a model for the device?

Thanks,

Carolus

  • 0
    TI__Mastermind 41310 points

    Carolus,

    I could not confirm this issue. I just tried to export the default design from the product folder and it worked correctly.

    Please see the attached TINA-TI file below. It does take a long time to run...

    webench_design.tsc

  • 0 in reply to Britt Brooks - Online Design Tools
    TI__Mastermind 22395 points
    Britt,

    Odd. I will try and download again. I was running 64bit Firefox at the time, perhaps this was the issue? One other question I had was ther Webench exports show a different size of RLC in the diagrams. It seems these are all integrated into the macro. If additional discrete components are added into the model, will the model be able to recognize these changes/run correctly (for example, if I place the optional resistor and high frequency capacitor on the COMP pin)?
  • 0 in reply to Carolus Andrews
    TI__Mastermind 41310 points

    Carlous,

    It is possible that the browser may have had an effect (more likely is a network glitch). I have seen IE perform differently from Chrome before, but not with a download. The TINA-TI schematic is generated using a format that converts all of the components to subcircuits. The model for the IC is generated from the netlist of the PSpice model that is built into the tool and then it is encrypted in TINA-TI. It does NOT have additional passive components rolled into the IC model. The components for compensation are present in the schematic, however, these are not TINA primitives, they are subcircuits that you can see by entering the macro that was generated. This methodology was chosen to ease the export process.

    You can always remove any of the external subcircuit components and replace them with TINA components or if you have manufacturer models for components, you may use those through the New Macro Wizard. If you do change the subcircuit values provided, you will notice that the value shown on the schematic does NOT change as this is added text. You would have to update it as well for the schematic to be correct, even though the simulation would use whatever value you provide in the .SUBCKT file.

    You can add any components to the schematic and the device should function properly. Updating components is a little more difficult unless you simply remove them and replace them with your preferred component. Please note that this simulation takes a VERY long time to run with the Power Stages and the IC running (my example was 120A @1V).

    Please let us know if you have any additional questions.