• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Answers 1 answer
  • Subscribers 39 subscribers
  • Views 1464 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

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.

[issue] while export TPS5401 design from webench to tina-ti running under "transient analysis" with "Calculate operating point" option checked.

ericsson sunshine
Prodigy 250 points
Other Parts Discussed in Thread: TPS5401, TINA-TI

Dear crews:

I am not sure whether it's proper or not. I think you better know it.

Recently I was evaluating TPS5401 based on (TI) local FAE's suggestion.Then I roughly key in some parameters into webench to generate a design and decide to export the design to tina-ti format which ready for download. Then I downloaded it.

Here is the issue, while I ran this downloaded file in tina-ti under transient-analysis mode with "calculate operating point" option checked (as title mentioned, and this is the default setting from webench convert to tina-ti),

then it went wrong with the following info:

But if I change the setting from "calculate operating point" to "Use initial conditions".

It works fine.

thank you.

  • 0
    Prodigy 250 points
    Dear crews:

    Excuse me. May I confirm another more question about TPS5401 in Webench.
    When I was converting the design to file format of Cadence OrCAD capture CIS & Altium Designer, I only got the .xml & .wbx file.
    But I didn't know how these files work ?
    In these softwares (OrCAD capture, altium designer), there are not default file extension of .xml & .wbx in the openfile dialog.
    What's the main purpose of these conversion files (.xml & .wbx) ?

    thank you
  • 0
    TI__Mastermind 41310 points

    ericsson,

    The three options that appear in the window are related to how the first step of the simulation is established by the simulator. Normally, calculating the bias point will provide the matrix the best starting point for the initial step into the transient simulation. However, there are cases where the DC operating point of some structures is not well defined. In those cases, using or zeroing out the initial conditions may give the simulator the best chance to find a valid solution.

    It appears in this case that the DC bias point was not well defined, so you needed to use the initial conditions to get the simulation to converge at the first time point.

  • 0 in reply to ericsson sunshine
    TI__Expert 6365 points

    Hi Ericsson,

    If you are using the export schematic feature from WEBENCH, there is a readme.txt file embedded in the zipped folder contains the instructions on how to import the schematic into the native cad tool.  Please take a look and let us know if you need more help on importing the converted schematic file.

  • 0 in reply to Howard Chen-WEBENCH Design Center
    Prodigy 250 points

    Dear Chen:

    Inside the .xml I found some text as below:

    "It also includes the advanced WEBENCH Simulation Engine which can be used for offline circuit simulations.
    You will need a activation key from TI to be able to use the WEBENCH Simulation Engine."

    Did it mean I will need an activation key to download an offline Webench version to run simulation, if I want to run Webench design in any local machine without internet ?

    If the answer is yes, how to obtain an activation key ?

    Frankly speaking (you might think this is a suggestion), Webench provides many features I hadn't seen before, that's powerful, but I felt a little bit inconvenient about the user interface of the waveform (scope) feature is not so user-friendly especially when zoom-in, zoom-out and do some measurement and calculation.

    for your reference.

    thank you for your reply.

  • 0 in reply to ericsson sunshine
    TI__Expert 6365 points

    Hi Ericsson,

    There is an offline version of the WEBENCH tool that offers the user to create designs offline but it won't have any simulation capability. For offline simulation, Tina-Ti, Altium Designer and Cadence OrCad Capture CIS are few of the simulators can run an exported WEBENCH design circuit.

    I hope I have addressed your questions, if not, please use the WEBENCH help page: www.ti.com/.../help-overview.page

  • 0 in reply to Howard Chen-WEBENCH Design Center
    Prodigy 250 points
    Hi Chen:

    Thank you. I see.

    Have a nice day.