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TINA-TI: TINA

John Tran1
Prodigy 20 points
Part Number: TINA-TI
Other Parts Discussed in Thread: LT1013, OPA2188, OPA188

Hi,

I trying to run the transient analysis of the attached circuit using TINA and the circuit could not converge.

I have read the help and adjusted the Analysis Parameter but nothing worked.

Can someone take a look and suggest which parameters to change in order for the transient analysis to converge?PWM buffer driver and booster.TSCPB64.lib  

  • 0
    TI__Expert 3320 points

    Hi John,

    We are looking for right contact who can reply to your query. Team will get back to you as soon as possible.

    Best Regards,

    Bhushan

  • 0
    Guru 47465 points

    Hello John, 

    Not sure why you are using a LT1013 here, that is a 1989 introduction. It does have an upgraded LT1413 model, but I could not import into TINA - it has some unrecognized statements. 

    Anyway, you should move to a OPA188 or OPA2188 dual. This still would not converge - I have been having trouble with the Apex models. 

    Been doing some newer power boost approaches if you are interested, contact me if you are interested in seeing those. profile has email. I have one for example working pretty well with the PA107 model - it seems pretty good, but its slew rate is 1/3 datasheet value in the model - I have passed that back into Apex to fix, but I am sure it is not a priority. 

  • 0 in reply to Michael Steffes
    Prodigy 20 points

    Hi Michael,

    First off, thank you for your quick reply.

    Your suggestion to use the OPA devices will work since in the application it is used as a simple amplifier of the driver stage.

    About the booster stage, the PA107 you mentioned may not work because it is used for driving capacitive load. PB64 is the correct choice for driving inductive load.

    I thought I did not set the analysis parameters correctly but I feel better now that you also experienced the SPICE model of PB64 causing the simulation not to converge.

    I probably will contact APEX about the SPICE model that they provided.

    You may close this thread.

    Regards,

    John

  • 0 in reply to John Tran1
    Guru 47465 points

    I don't think I can close you it, you need to

    I mentioned the PA107 not that is was alternate, but just an example of an Apex model that I did get running in TINA. These circuits have considerable stability challenges, good luck. 

  • 0 in reply to Michael Steffes
    Guru 47465 points

    Also John, not sure that Apex is going to give you much help with a TINA sim.. If you go into the model, it is relatively recent where it seems they expect you to use (or not?) LTSPice, kind of a cryptic comment, maybe "Alternate Solver" is an option inside of LTSpice - 

  • 0 in reply to Michael Steffes
    Guru 47465 points

    And that Analog Innovations is a consultant in Phoenix area. Apparently doing the Apex models. There are several companies that do contract modeling,