PSPICE-FOR-TI: Convergence occurs when the TPS7A39 powers the INA821.

Hi Leo,

Have you manually added the library model for TPS7A39?

Could you please share your design with me? See FAQ here for how to share.

As far as the longer simulation time, its possible that something inside of the TPS7A3901 component struggles to converge. As a result, the simulator is working harder to find a solution. Its likely caused by the design of the model. 

Thank you,

Jackie

Yes, I downloaded the LDO library from TI's official website, I didn't realize it was included in Pspice-TI at the time.tps7a3901_trans-2022-07-06T16-36.zip
Below is my design.

Hi Leo,

This is likely the issue. Please remove the custom library that you have added. You can find the pre-loaded parts under Place -> PSpice Component -> Search...

If you do not find the model you are looking for, then you likely need to update. PSpice for TI will automatically check and update models, including the TPS7A3901. Next time you launch the tool, it should ask if you would like to update your model libraries. Click Yes to accept the updates and you will find the latest models after the update completes. 

Thank you,

Jackie

Hi Leo,

Thank you for letting me know. Are you still seeing a limitation on the noise simulation?

-Jackie