LMZ12001EXT: Issue when trying to import PSpice model in TINA

Hi,

I requested for downloading PSPICE-FOR-TI from the website. it went for approval &I didnt get any response

Can you please help me downloading PSPICE for TI

Hi Santhosh,

I could not help with PSPICE for TI download and you must go through the approval process. I assign JC Zhu here for help if needed.

Thanks,

Nancy

I requested for two times. But I dont my status of application. Didnt receive any mail regarding that.

Hi Santhosh,

Please check your junk folder. The approval email comes from "pspice-for-ti@ti.com".

Regards,

JC

I got approval & downloaded PSPICE for TI. Thank you. 
Can I have reference design for LMZ14201EXTTZ in PSPICE for TI? So That I can simulate the same by modifying as per my requirements.

Hi I simulated one application circuit present in the datasheet. But I am not getting 3.3V output (output is 0V).

Please see my circuit & output waveforms attached. please help me to get proper result.

Thank you

Hi Santhosh,

Which design (Page) in the project you ran? Could you please share your project file? We will check it.

LMZ12001.zip

Hi Miranda,

Please find the attached Project file. I wanted 5V dc output for 15Vdc input. I was not able to get the output so I just tried the application circuit mentioned in the datasheet.

Thank You

Hi Santhosh,

I cannot run your model. Because you didn't put .lib file into the zip.

Anyway I got your question, I will build the circuit myself then share with you.

4540.LMZ12001.zip

Hi Miranda,

Attached the .lib file

Hi,

Thank you but i dont see start up page here

Please open the .opj file.

Hi,

When I run it, Simulation is getting aborted. Please see the attached image

Hi Santhosh,

Sorry I have no idea with the error. I didn't meet it in my side.

Maybe expert JC Zhu could help.

JC Zhu: Can you please help me?

Hi Santhosh,

I run your file and has same issue since you may change something for the file. Please download the new snvm157.zip file and follow the slide attached. You will see the simulation result.

LMZ12001 PSpice for TI Simulation.pptx

Hope this helps,

Thanks,

Nancy

Hi,

Thanks for the suggestion. I downloaded new PSPICE model. Followed the instructions in the ppt. But didn't work out. same issue. 

Regards,

Santhosh

The issue was with the markers. Now I can able to simulate it. Thank you.

Will change the circuit to get 5V output (by changing feedback resistors) as per my requirements and simulate it again.

Hi Santhosh,

Yes, I add 3 markers and can run your file too..

Thanks

Nancy

Hi Nancy,

Great! Do you have reference circuit or simulated circuit for 5V output? 

Hi Santhosh,

This is an old module, we don't have any reference design schematic. I think you may only need to change feedback resistors for simulation. For real circuit. Please ensure output capacitor voltage rating is good for 5V.

Thanks,

Nancy

OK Thank you.

And I want to simulate other three pages in the schematics as well. But when I click run, It is showing " current schematic is not in simulation hierarchy". May I know how to add that to simulation hierarchy?

Hi Santhosh,

Please see my slide 2-6 as attached.

8507.LMZ12001 PSpice for TI Simulation.pptx

Thanks,

Nancy

Thank You.

One more thing. I want to know the tolerance for output voltage. minimum & maximum voltage we get at the out put considering all the condition.

May I know if there are any formula to calculate that min and max output voltage?

One thing i know is by considering tolerance of the feedback resistors, we can determine the tolerance of the output voltage. Any other parameters should I consider?

Regards,

Santhosh

Thank You.

One more thing. I want to know the tolerance for output voltage. minimum & maximum voltage we get at the out put considering all the condition.

May I know if there are any formula to calculate that min and max output voltage?

One thing i know is by considering tolerance of the feedback resistors, we can determine the tolerance of the output voltage. Any other parameters should I consider?

Regards,

Santhosh