ISO121: PSPICE Model Netlist Errors with PSPICE for TI

Vaishnav Achath

Part Number: ISO121
Other Parts Discussed in Thread: ISO224, ISO120,

PSPICE for TI comes with ISO121X Model and when using it to simulate a simple application circuit, it results in several netlisting errors as shown below and simulation does not run, this is the same case with ISO120X model also, are there working versions of ISO120/1/2/4 (or ISO224) which can be used with PSPICE for TI? Information about the error is attached below:

INFO(ORCAP-2191): Creating PSpice Netlist
INFO(ORNET-1041): Writing PSpice Flat Netlist C:\Users\...\Documents\PSPICETI\ISO121X-PSpiceFiles\SCHEMATIC1\SCHEMATIC1.net
ERROR(ORNET-1019): Pin 3 in template not found on U1
ERROR(ORNET-1019): Pin 4 in template not found on U1
ERROR(ORNET-1019): Pin 17 in template not found on U1
ERROR(ORNET-1019): Pin 18 in template not found on U1
ERROR(ORNET-1019): Pin 19 in template not found on U1
ERROR(ORNET-1019): Pin 20 in template not found on U1
ERROR(ORNET-1019): Pin 21 in template not found on U1
ERROR(ORNET-1019): Pin 22 in template not found on U1
ERROR(ORNET-1019): Pin 23 in template not found on U1
ERROR(ORNET-1019): Pin 24 in template not found on U1
ERROR(ORNET-1019): Pin 37 in template not found on U1
ERROR(ORNET-1019): Pin 39 in template not found on U1
ERROR(ORNET-1019): Pin 40 in template not found on U1

PSPICE for TI Version: 2021.1, TI Models and Libraries are updated

Thanks and Regards,

Vaishnav

over 3 years ago

0 Alexander Smith over 3 years ago

TI__Guru 51111 points

Hi Vaishnav,

Thank you for bringing this to our attention. Please give us some time to dig into this issue.

In the mean time, if you have not viewed the training material on PSPICE for TI, they may be helpful: training.ti.com/pspice-ti-3rd-party-model-import

0 Scott Cummins over 3 years ago in reply to Alexander Smith

TI__Mastermind 31655 points

Hi Vaishnav,

Can you also please post or private message your PSPICE circuit file that generates this error?

Thank you,

Scott

0 Vaishnav Achath over 3 years ago in reply to Alexander Smith

TI__Prodigy 575 points

Thank you for the quick response Alex, thanks for sharing the tutorial yes I am aware of importing new models to PSPICE for TI, the above errors are coming up when using the ISO121 model from TI models/libraries within PSPICE for TI.

Thanks and Regards,

Vaishnav

0 Vaishnav Achath over 3 years ago in reply to Scott Cummins

TI__Prodigy 575 points

Thank you for the quick response Scott, here is the PSPICE project files for the test setup(the setup is a simple common ground setup for checking the simulation model actual application is different), let me know if you need any additional details.

Thanks and Regards,

Vaishnav

ISO121TEST-PSpiceFiles.zip

0 Scott Cummins over 3 years ago in reply to Vaishnav Achath

TI__Mastermind 31655 points

Thank you Vaishnav,

I am taking a look at this now. There may have been some mistake in the implementation of the model in PSPICE. It looks like it thinks that there are up to 40 pins, which is true physically for some package options, but only 16 are used, and of those only 13 are included in the model. This will take some time to correct. I will try to get you something to use by the end of next week.

Regards,

0 Vaishnav Achath over 3 years ago in reply to Scott Cummins

TI__Prodigy 575 points

Hi Scott,

Thanks a lot, Please take your time

Regards,

Vaishnav

0 Vaishnav Achath over 3 years ago in reply to Vaishnav Achath

TI__Prodigy 575 points

Hi Scott,

were you able to check into this PSPICE model implementation issue for ISO121?

Thanks and Regards,

Vaishnav

0 Scott Cummins over 3 years ago in reply to Vaishnav Achath

TI__Mastermind 31655 points

Hi Vaishnav,

Sorry for the delay. We are still trying to get to the bottom of what caused the error with the original symbol file. In the meantime, we have created a new one, and I am in the process of getting it published. As soon as it is ready, it should be pushed to the built-in library, and you will get it with an update when you start PSPICE for TI again. I will let you know when that is completed.

Regards,

Scott

0 Vaishnav Achath over 3 years ago in reply to Scott Cummins

TI__Prodigy 575 points

Hi Scott,

Thanks a lot for providing the new PSPICE model, I will test and let you know the results as soon as the model is available in the PSPICE for TI model library.

Thanks and Regards,

Vaishnav

0 Vaishnav Achath over 3 years ago in reply to Vaishnav Achath

TI__Prodigy 575 points

Hi Scott,

Can you let me know when the updated model will be available with the update to PSPICE for TI, I have very recently updated the TI models and the ISO121 model is same and the previous errors exist still now, if there is delay in updating through PSPICE for TI, will it be possible to share the new model separately.

Thanks and Regards,

Vaishnav

+1 Scott Cummins over 3 years ago in reply to Vaishnav Achath

TI__Mastermind 31655 points

Hi Vaishnav,

I'm very sorry for the delay in the update to the PSPICE model. I am working to get the library updated, and in the meantime, here is a corrected .OLB file. This symbol is compatible with the existing .lib file.

ISO121X.OLB

0 Vaishnav Achath over 3 years ago in reply to Scott Cummins

TI__Prodigy 575 points

Hi Scott,

Thanks a lot for sharing the updated PSPICE model, the corrected .OLB file works perfectly with the existing .lib file and we are able to continue with the simulation for our use case, Thanks again for updating and sharing the PSPICE model.

Regards,

Vaishnav

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ISO121: PSPICE Model Netlist Errors with PSPICE for TI