Power Converter (LM2596) simulation

Discussion in 'General Electronics Chat' started by remi_for, Feb 17, 2016.

  1. remi_for

    Thread Starter New Member

    Jan 30, 2016
    6
    0
    Hi,

    Is there anyone who know if there is a good software to simulate a Power Converter curcuit, were I would like to use the LM2596?

    I tried to find it in Multisim, but it was not there.
     
  2. eetech00

    Active Member

    Jun 8, 2013
    649
    112
    I have one. But it's for LTSpice
     
  3. remi_for

    Thread Starter New Member

    Jan 30, 2016
    6
    0
    Awesome! What is LTSpice? Is it a free software? Easy to use, like multisim?
     
  4. eetech00

    Active Member

    Jun 8, 2013
    649
    112
    LTspice is a free simulator developed by Linear Technologies. It's has a steep learning curve but is probably the best free simulator available. One you understand how to use it, it's easy to use.
     
  5. remi_for

    Thread Starter New Member

    Jan 30, 2016
    6
    0
    Thanks! I installed the software, and tested it. It works good, and the software looks pretty good. Excited to try it more.

    You sad you have a simulation of the LM2596? How should I find it?
     
  6. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,797
    1,103
    I'd suggest you join the Yahoo LTspice User Group. They have libraries of all sorts of sim models for free download. You can add models (*.sub and *.lib files) to the standard LTspice 'sub' folder, and add their symbols (*.asy files) to the LTspice 'sym' folder (or sub-folder thereof).
     
  7. eetech00

    Active Member

    Jun 8, 2013
    649
    112
    Hi Alec_T

    Last time I looked they didn't have an LM2596 model. So I made one.
     
  8. eetech00

    Active Member

    Jun 8, 2013
    649
    112
    I only have an LM2596ADj adjustable version at the moment (see attached image). But its easy enough to make a fixed version if you need one.
    Which one do you need?
     
    Last edited: Feb 18, 2016
    absf likes this.
  9. remi_for

    Thread Starter New Member

    Jan 30, 2016
    6
    0
    Thanks a lot :)
    I need a LM2596. I am using it for a project were I would like to test if I could convert a voltage who is between 9 - 7, down to 5 V / 3 A for a load.
    The datasheet is the one who is attached.
     
  10. eetech00

    Active Member

    Jun 8, 2013
    649
    112
    Ok...I'll create a fixed 5.0 volt version and post tomorrow.
     
    remi_for likes this.
  11. remi_for

    Thread Starter New Member

    Jan 30, 2016
    6
    0
    Thank you! :)
     
  12. eetech00

    Active Member

    Jun 8, 2013
    649
    112
    Hi

    I've created a subckt file containing the Fixed output LM2596 series regulators. It also includes the adjustable regulator. Just add the symbol to your schematic and set the value field to one of the following:
    LM2596_03, LM2596_05, LM2596_12, or LM2596_ADJ

    Have fun.
     
  13. remi_for

    Thread Starter New Member

    Jan 30, 2016
    6
    0
    Thanks a lot eetech00! Im allready have a lot of fun! :D

    But one question: What are the Inrush Input Filter Model for? To regulate an good input volatge?
     
  14. eetech00

    Active Member

    Jun 8, 2013
    649
    112
    Its just to slow the input current rise when input power is initially applied. You probably don't need it.
     
Loading...