PSPICE-FOR-TI: PSPICE-FOR-TI

Hi Munesh,

There are a number of ways to speed up a simulation. Have you looked into those at all? I don't want to tell you to do something that you've already tried as that can be annoying.

e.g. save the DC state. Change convergence (if it's a slow convergence), etc.

David

Hi David,

I used to do simulation in ORCAD PSPICE only. Pspice for TI is new for me and I don't know how to increase simulation speed. I made a simple circuit with LMR34215 and it is not able to simulate. No error found but it takes more than an hour to simulate. Kindly guide me how to do fast simulation.

Hi Munesh,

I'd recommend starting with the reference design for this part. You can run that, and explore the settings to understand better what was done to optimize performance and accuracy.

I just pulled up the LMR34215SC5-Q1 and noted that it has both startup and steady state simulation setups. It even has this note:

David

Hi David,

while doing simulation with LMR34215 part in pspice. I have got a error "ERROR(ORPSIM-15157): |VON - VOFF| too small for VSWITCH model X_U1.X_U3_S30._U3_S30." Kindly let me know how to resolve it. please find attached schematic file for your reference.

Hi Munesh,

I'm going to re-direct this question to the product line. They are the experts on their device and own the model as well.

David

Hi Munesh,

Similar with the previous post, I recommend using the example schematic found on the device product folder: https://www.ti.com/product/LMR34215-Q1

You can change the component values and Vin to match your design and see if the issue persists. 

Best regards,

Ridge