Problem with PSpice model - LM2679

Pawel Staniak

Other Parts Discussed in Thread: LM2679

Hi,

I have a problem with PSpice model (LM2679). I wanted to create simulation with this part. I downloaded example from TI site (LM2679_PSpice_Transient_Model). It worked. Then I changed parameters to higher values. I took values from datasheet (lm2679.pdf).It was design example for LM2679-ADJ. In this case simulation didn’t work. All parameters were from datasheet so I have a question if someone created PSpice simulation with this model. What happen that model don't work if I have input voltage higher than 20V.

over 10 years ago

0 Akshay Mehta over 10 years ago

TI__Genius 15810 points

Hello! We will move your question to the modeling forum where it will be answered sooner.

0 Nikhil Gupta (Product Folder Models) over 10 years ago in reply to Akshay Mehta

TI__Mastermind 39210 points

Pawel,

Please attach a complete copy of your PSpice project and we will have a look at it, otherwise there are too many unknown variables to consider. In the meantime, please consider using WEBENCH for your design and simulation needs. It offers a complete prototyping eco-system rather than just simulations.

Thanks,

0 Pawel Staniak over 10 years ago in reply to Nikhil Gupta (Product Folder Models)

Prodigy 20 points

Hi,
Thanks for links. I will try checking model from these sites or using webench to create model of buck converter. After that I will export model to e.g. orcad. If I have problems I will write :)

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Problem with PSpice model - LM2679