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WEBENCH® Tools/LM63615-Q1: LM63615-Q1 pspice simulation

taufeeq ahamed
Prodigy 40 points
Part Number: LM63615-Q1

Tool/software: WEBENCH® Design Tools

Hello ,

I was trying to run the spice  LM63615-Q1 model in Pspice for different analysis like dc sweep, AC response, but the  model fails with the existing design itself .

And also i tried running the transient response, its taking more time then expected to generate the result . is there any issue with  the model provided or any correction that  has to be made from my side ?

2. I tired the same IC with the webbench, simulation is missing in it. Is there any other possibilities I can simulate this IC with different tool ?

Below is the image for you reference .

Regards

Taufeeq

  • 0
    TI__Mastermind 27470 points

    Hi 

    I can see the picture you attached, I tried Pspice mode, it shows erro about command ignored, do you have the same issue?

    Thanks

  • 0 in reply to Daniel Li14
    Prodigy 40 points

    hi 

    As i said earlier it is one of the error, i cant able to proceed further . how to resolve this?

     

  • 0 in reply to taufeeq ahamed
    TI__Mastermind 27470 points

    Hi 

    sorry for the typo, I can't see the erro info you attached. I switch to another laptop, and the Pspice simulation looks OK, can you help attached the erro information so that I can forward to related people see any whether they have any suggstion

     

  • 0 in reply to Daniel Li14
    Prodigy 40 points

    Hello Daniel ,

    I was trying to perform DC sweep analysis  from 9 to 17V with a constant  output of 8V ,.5A .

    I was getting error during the run time, Attached the error below and also while performing the same with webbench, simulation output is not available for this IC , is it possible to include the simulation for this . 

    PSPICE :

    These devices failed to converge:
    X_U1.X_HK_MODE_SYNC_U631.d_d10 X_U1.X_HK_MODE_SYNC_U637.d1 X_U1.X_OSC_U4.d1
    X_U1.X_DRV_U703.d_d10 X_U1.X_DRV_U687.d_d10 X_U1.X_DRV_U870.d1
    X_U1.X_EA_U1.d1 X_U1.X_EA_U4.d1 X_U1.X_GM_U14.d_d11 X_U1.E_OSC_ABM3
    X_U1.X_OSC_U903.E_ABMGATE X_U1.X_DRV_U706.E_ABM X_U1.X_GM_U850.E_ABM
    X_U1.G_EA_ABMII1

  • 0 in reply to taufeeq ahamed
    TI__Mastermind 27470 points

    Hi

    I am checking the issue internally, I look for modeling team help on it, but I am not sure whether we can close this issue, pls wait.

    Thanks

  • 0 in reply to taufeeq ahamed
    TI__Intellectual 1440 points

    Hi Taufeeq,

    Thanks for reaching out to us. Please find answers below:

    1. We cannot perform DC and AC analysis on switching models in PSPICE. Hence pspice transient model available on WEB donot support DC and AC analysis.

    You should be able to run transient simulations without any issues.

    2.  Simulations are not enabled for this device on WEBENCH. Pleas try running transient simulations in Pspice and let us know  if you face any issues.

  • 0 in reply to Imran Dharwad
    Prodigy 40 points

    Hello Imran,

    sorry for the late replay ,

    Just for calcification, this constrain is only for this particular IC (LM63625) or it is applicable for all switching models from TI ?

    Regards

    Taufeeq

     

  • 0 in reply to taufeeq ahamed
    TI__Mastermind 35210 points

    Applicable to all switch mode regulator models that I am aware, not unique to this buck converter.

    Luckily, we provide the tools to perform analysis which can be achieved in timely fashion.

    If additional assistance on analysis is required, feel free to reach out to your local TI sales representative or connect with us over the forum.