TPS40210-HT: Convergence Error

Asier Portillo

Part Number: TPS40210-HT
Other Parts Discussed in Thread: TINA-TI

Tool/software:

Hello,

I have been trying to run the following simulation correctly for over a week now but I can't. I have tried changing the simulation parameters but I keep getting a convergence error over and over again. I am attaching an image of the simulation of a Flyback converter isolating the secondary from the primary.

Modelo_Con_Aislamiento_Completo.TSC
It is worth mentioning that I got the error when I introduced the two operational amplifiers... it seems that TINA-TI does not work well using two operational amplifiers in the same simulation, but that is what I have to use.
Thanks in advance,

Asier

7 months ago

0 Niklas Schwarz 7 months ago

TI__Mastermind 30450 points

Hi Asier,

Thanks for using the e2e forum.

As most of our model have shifted to PSpice for TI, our TINA model no longer receive any updates. This is also the reason why I my debugging capabilities in TINA are rather limited.
I cannot guarantee that PSpice works better at converging the external OpAmp, but based on experience, it should perform better.
If you have another simulator of preference, such as SIMPLIS or LTspice, it is also possible to transfer the unencrypted .lib file to another simulation and work there.

Please let me know if this is a possibility for you and whether the simulation still fails or improves.

Thanks and best regards,
Niklas

0 Asier Portillo 7 months ago in reply to Niklas Schwarz

Prodigy 90 points

Hello.
First of all, thank you for your reply.
Yes, in my case I could use another simulation environment such as LTSpice, so I would like to know the step-by-step instructions on how to export and import the TINA-Ti simulation to LTSpice correctly.
Thanks in advance,
Asier

0 Niklas Schwarz 7 months ago in reply to Asier Portillo

TI__Mastermind 30450 points

Hi Asier,

Thanks for you quick feedback.

Here is a link to a step-by-step guide.
https://www.youtube.com/watch?v=QE7jUcWWi5M

In addition, here is a thread on common mistakes during model transfer between simulators.
https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/692613/faq-tina-spice-note-about-encrypted-models-and-importing-models-from-one-simulator-to-another

Please let me know if you need additional help.

Best regards,
Niklas

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TPS40210-HT: Convergence Error