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LMR36503: Can't make the PSPICE model work

Joselito Go
Expert 5890 points
Part Number: LMR36503

Hi Experts,

Good day.

Our customer needs to simulate the behavior of the LMR36503 but either they doing wrong or there is an issue with the SPICE model.
It takes 1.5 hours to run a simulation (with PSPICE and LTSPICE). I have attached the schematic. Any idea why?
I am using the 17.4-20200 S0008 version of PSPICE. I have indeed downloaded the last model of the component. My settings are 10m for "Run to time" and 0 for the rest.


Keep safe.

Regards,

Josel

  • 0
    TI__Genius 10715 points

    Hi Josel, 

    This might be due to the long run time you are trying to use. To decrease the simulation time, you can reduce the run time from 10ms to something lower. Also, you can increase the minimum step size, this represents the resolution of the simulation. When increasing the minimum step size be sure to keep the minimum step size smaller than 200us to ensure adequate resolution of the switch node. 

    Regards,

    Harrison Overturf