Hello,

I am trying to design a Buck using LM25145 from TI. They provide a Pspice model and I am not sure how to convert to LTSpice sub circuit. Kindly help/advise. I have enclosed the link for the website for the pspice model. I have also attached the .lib file that they provide.

http://www.ti.com/product/LM25145/toolssoftware

Thanks.

 

Hi

The spice file is encrypted so cannot be used with LTspice.
You might contact TI and ask if they will provide an unencrypted version.

eT

 

Thank you for your response. I did contact them and I was provided an alternate unencrypted model of LM5145 instead of LM25145. This lib file is in Pspice as well. Is there a way to convert this file so that I can use in LT spice? I have attached the lib file for reference as well as the link.

http://www.ti.com/product/LM5145/toolssoftware

Thanks.

 

Thank you for your response. I did contact them and I was provided an alternate unencrypted model of LM5145 instead of LM25145. This lib file is in Pspice as well. Is there a way to convert this file so that I can use in LT spice? I have attached the lib file for reference as well as the link.

http://www.ti.com/product/LM5145/toolssoftware

Thanks.

Sometimes the pspice file will run without modification.
Try it. If it produces errors, I will convert it for you.

eT

 

HI

Here is the converted spice file.

eT

 

HI

Here is the converted spice file.

Out of curiosity, what did you have to convert?

 

But my adaptation. I reduced the number of elements and nodes of the circuit. I did not test this model. When I adapted another model in it, like this model the generator is built on a switch. And this generator did not work. I had to do a generator on specific elements of LTspice.
Model:

 

But my adaptation. I reduced the number of elements and nodes of the circuit. I did not test this model. When I adapted another model in it, like this model the generator is built on a switch. And this generator did not work. I had to do a generator on specific elements of LTspice.
Model:

Thank you Bordodynov

I've been trying to fix the LM5145 model to make it work (I'm using LTxpice XVII 5/20/19 version), and stumbled across this thread. Yours was the only one I could get to actually run.