LTSpice Model for UC1843A PWM IC

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rauckr

New Member

• Mar 27, 2020

• #1

I am an electrical engineer involved in the Power Electronics field for many years. I am new to this site. Does anyone know where I can find an LTSpice model for the UC1843A PWM IC? Any help would be greatly appreciated.

 

alec_t

Well-Known Member

Most Helpful Member

• Mar 27, 2020

• #2

Welcome to ETO!
You could probably use the Pspice model in this zip file .

 

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rauckr

New Member

• Mar 27, 2020

• #3

That looks like the unencrypted PSpice model that I had already downloaded from the TI site. I was under the impression that the syntax was different between the two simulators. Is this a model you have successfully run in LTSpice? Thanks for any help!

 

ronsimpson

Well-Known Member

Most Helpful Member

• Mar 27, 2020

• #4

Use LT1242 which is in the LTSPICE library.
There is a family of 8 pin swithers UC1841 through 45. The LT1241 through 45 are copies.

 

E

eTech

Well-Known Member

• Mar 28, 2020

• #5

Hi

Here is a version of the TI UC1843A model modified for LTspice. I was downloaded from the TI website.
I only fixed the error(s) messages and didn't focus on the accuracy of the model. I would verify its behavior
before using it.

eT

 

Attachments

• UC1843A-TI_Model_and_Test_Circuit.zip

  7.9 KB · Views: 462

alec_t

Well-Known Member

Most Helpful Member

• Mar 29, 2020

• #6

rauckr said:

Is this a model you have successfully run in LTSpice?

Click to expand...

No, but Etech ^^ seems to have got it working.

 

R

rauckr

New Member

• Mar 29, 2020

• #7

eTech, thank you very much. I really appreciate the help. alec_t, I appreciate your help also!