SN6501-Q1: 5V iso circuit using SN6501

Hi Thangasamy,

Thank you for your patience. Yes, I did try to simulate the file you have shared and I did notice the same error while running transient analysis.

The issue is primarily due to the transformer. Since the transformer is a short for DC analysis, the simulation doesn't find an operating point to begin simulation. When I modified the transformer parameters a little bit, I could get it to run but it being an ideal transformer there seem to be a convergence point where operation becomes invalid. Please see below the modified schematic and the waveform.

schemwave1.pdf

If you replace the transformer with a resistive network, you no longer see such a problem.
If you would like, you could also evaluate the device using an evaluation module (link below).

https://www.ti.com/tool/SN6501-MULXFMR-EVM

If you still like to simulate, then I can try tweaking the transformer further and see if I can get it to work and avoid convergence point. Let me know, thanks.

Regards,
Koteshwar Rao