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LMG5200: SPICE model gives error in mixed simulation modula of Altium designer

J Luo1
Prodigy 20 points
Part Number: LMG5200
Other Parts Discussed in Thread: TINA-TI

Hi everyone,

I am interested in using the LMG5200 for a full bridge application.

I have downloaded the unencrypted spice model of LMG5200 and converted it into a CKT model file that can be read by the Altium designer simulation module.

I made a very simple connection as below so to try out.

HI_signal and LI_signal are simply two 10V pulses with 180 phase difference, each of them have a 25% duty cycle.

Vin= 80V, Vcc=5V.

The simulation results generated report partially shown as below:

finally a error at the end:

then the simulation is aborted.

The transient analysis setup is set as below,  I don't the time step problem comes from the setup.

I

My knowledge of SPICE is not well enough to diagnose the cause, so I hope someone can be so kind to give me some advice on solving this.

Thank you in advance!

PS: This is where I downloaded the model

Kind regards,

S.suns

  • 0
    TI__Genius 16390 points

    Hello,

    Thanks for reaching out regarding the LMG5200 model. The model is used by other customers and has not shown an issue. I suspect it's more likely to be an issue during the format conversion. Could you please try the model in other SPICE tool which does not require conversion and let us know if you still encounter problems.

    Regards,

  • 0 in reply to Yichi Zhang.
    Prodigy 20 points

    Hi Yichi,

    Thanks for your reply!

    As for the conversion, I didn't change the content in the spice model file, I only opened it with Notepad and saved it as a .ckt file. 

    In Altium designer the underlying engine is NGSPICE, do you think that is the reason? As the provided one is PSPICE model.

    Thank you!

    Kind regards,

    S.suns

  • 0 in reply to J Luo1
    TI__Genius 16390 points

    Hello Suns,

    Let me check with my team to see if they have experience converting .lib to .ckt. Meanwhile, could you verify the functionality of the model in SPICE tool such as PSPICE?

    Thanks!

    Regards,

  • 0 in reply to Yichi Zhang.
    Prodigy 10 points

    Hi Yichi,

    Thanks for your reply, please let me know once you and your team have any conclusion on the conversion problem.

    Meanwhile, I have tried the TINA-TI model on TINA-TI platform, and it works perfectly :)

    My circuit is quite simple so to use this component, I will work with TINA-TI for now.

    Kind regards,

    Suns

  • 0 in reply to J Luo
    TI__Genius 16390 points

    Sounds good Suns! I will update on this posts if any more info on the conversion comes up.

    Regards,