UCC21710-Q1: Model conversion error

Tushar Nistane

Intellectual 325 points

Part Number: UCC21710-Q1
Other Parts Discussed in Thread: UCC21710

Hi,

I was trying to convert UCC21710-Q1 into Tina TI model , but I am getting same error of Invalid device $CDNENCSTART

Could you please suggest to get my solution how to comment out this line of code and where: .MODEL IXGA8N100 NIGBT ???

over 5 years ago

0 Don Dapkus over 5 years ago

TI__Guru**** 189401 points

Hi, Tushar, Please review this app note and video, and let us know if you have further questions afterwards. www.ti.com/.../slva527.pdf training.ti.com/importing-spice-models-tina-titm-simulator

0 Tushar Nistane over 5 years ago in reply to Don Dapkus

Intellectual 325 points

Hello sir,

Thank you for your reply. I have already gone through material and video once. However, since the LT spice model of ucc21710 , available for simulation is encrypted which was showing me some error relative to "few nodes". So I thought of an alternative way of converting it into Tina TI. But it didn't work, as I was getting some error as I said before. So I request you to provide me either link to download LT spice 15.7 or higher or tell me solution to simulate above IC model.

0 Tushar Nistane over 5 years ago in reply to Don Dapkus

Intellectual 325 points

Hey, can you provide me an unencrypted model or link to download LT Spice 15.7 or higher so that i can simulate UCC21710

0 Audrey Dearien7 over 5 years ago in reply to Tushar Nistane

TI__Expert 4875 points

Hello Tushar,

The lines which call the IXGA8N100 model are used in the Pspice simulation, but are not necessary for the UCC21710 model itself. These lines may be commented out, and should be when importing the model to TINA/LTSpice. The section highlighted below is the section to comment out.

After commenting out the lines associated with IXGA8N100, are you able to import the model to TINA or LTSpice?

Regards,

Audrey

0 Tushar Nistane over 5 years ago in reply to Audrey Dearien7

Intellectual 325 points

Hello,

Thank you for your reply. I have tried to comment out by adding * at start of each line from the highlighted section of code, still not working.

0 Audrey Dearien7 over 5 years ago in reply to Tushar Nistane

TI__Expert 4875 points

Hello Tushar,

I need to clarify. Unfortunately, with the encrypted models you will need to simulate using PSpice. We do not have unencrypted models available for public use at this time.

However, I believe the student version of PSpice is available for download on their website, and there are many tutorials available online explaining how to perform simulations in PSpice.

Regards,

Audrey

0 Tushar Nistane over 5 years ago in reply to Audrey Dearien7

Intellectual 325 points

Hello Sir, thank you for reply.I have tried simulating UCC21710 in OrCAD student Lite version , its giving me error of subcircuit not defined and i have read in one of the post that encrypted model only run on full version of LTspice 15.7 or higher, so how do you suggest me to simulate my circuit ?

Is there no way i can see my design for this IC is correct or not ??

0 Audrey Dearien7 over 5 years ago in reply to Tushar Nistane

TI__Expert 4875 points

Hi Tushar,

Unfortunately, it would require the full version of PSpice. You can use the EVM to evaluate your circuit performance as opposed to simulation. If you have specific questions regarding the operation of the device, you can refer to our EVM User's Guide, Application Notes, and Datasheet.

I apologize for the confusion. Please post again with any additional questions regarding this device's operation.

Thank you,

Audrey

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UCC21710-Q1: Model conversion error