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LMG1210: LMG1210 - Simulation in LTSpice

Michal Stopka
Prodigy 10 points
Part Number: LMG1210
Other Parts Discussed in Thread: LMG1205

Dear Sir or Madam,

i have got the simulation model from your internet side and try to import the model into LTspice. Unfortunately the simulation model doesn't match the pinout from the data sheet.

In the simulation model are more pins like the data sheet shown.

Some of the pins are also named differently as in the data sheet.

 

My question are:

- which are the pins i have to use in the simulation program (LTspice)?

- Can i just let the unused pins open in the simulation?

- In the simulation model i found a VCC pin. I think the pin is standing for VDD (data sheet), is it right?

 

Is it maybe possible to get from you (TI) the simulation model in LTSpice format?

 

Please let me known if you need more information (like screenshot).

Kind regards

  • 0
    Prodigy 10 points

    Hi together,

    i have analyzed the problem and i find out there must be some wrong in the simulation model.

    Standard simulation model include usualy a model parameters, but the simulation model from LMG1210 include only a broken code i think (see below).

    Copy of a part of the code from the simulations model from LMG1210 (lmg1210.lib):

    .SUBCKT LMG1210 HB HO PWM_LI HS_0 HS_1 HS_2 HS_3 HS_DAP LS_DAP VIN LO DHL DLH  VCC VSS_0 VSS_1 EN_HI NC_0 NC_1 NC_2 BST
    $CDNENCSTART
    eee8c5c7a2bc4b01f045f303678664e7916da0bae22e8cb0bba041dd67c69ce448ea70148a9ac1670c8926c1ac5057c8ccfcd77bf87ca9dcc8a6880b9ec40ad1
    d49621ec8e49fcf0dc1f5b10413b8dc7dbe86c1f70c2d0d35c78620980dad895ec3bbd50ccba185dcefba7cc35a5f871470fa9a71ef2387b9cf6c3a968bdba61
    b0052325a1f7e54d09b5199b512d985cdbe86c1f70c2d0d35c78620980dad895ec3bbd50ccba185dcefba7cc35a5f871470fa9a71ef2387b9cf6c3a968bdba61.....

    ...

    Usually the simulations models looks like:

    .subckt LMG1205 HI LI HB HOH HOL HS_0 HS_1 VDD_0 VDD_1  LOH LOL VSS

    RVdd1 VDD VDD_1 1m
    RVdd0 VDD VDD_0 1m
    RHSS0 HS HS_0 1m
    RHSS1 HS HS_1 1m

    ...

    We would need a working simulation model for LMG1210 as soon as possible.

    I hope to hear from you soon.

    Best Regards

    Michal Stopka

  • 0 in reply to Michal Stopka
    TI__Genius 9570 points

    Hello Michal,

    There may be difficulties when uploading PSpice models into LTSpice. There may be slight changes you need to make to the model in order to make it work. Also, Analog Devices owns LTSPice and TI is not allowed to support LTSpice because of the LTSpice EULA. This E2E thread goes into more detail: https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/546520/ltspice-iv

    As for the working simulation model, this user presumably has a working simulation file. Please be careful with files off the internet though.

    Best Regards,
    Ethan Galloway

  • 0 in reply to Ethan Galloway
    Prodigy 10 points

    Hello Galloway,

    i have opened the .lib file after the download with text editor. Usually a .lib file use parameters and formulas to describe the internal functions of the model.

    I find in the .lib file after the .SUBCKT only a broken code (about 220 rows with "eee8c5c7a2bc4b01f045f30367866".

    Could you maybe check the model again please.

    Best Regards,

    Michal Stopka

  • 0 in reply to Michal Stopka
    TI__Genius 9570 points

    Hello Michal,

    Are you using the encrypted version of the driver? Make sure you are using the unencrypted version of the LMG1210 driver if you want to load the file into LTSpice.

    Best Regards,
    Ethan Galloway