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LMH6555: LMH6555 Simulation Error on PSpice for TI

Wael JABALLAH
Prodigy 10 points
Part Number: LMH6555


Dear Technical Support Team,

The LMH6555 simultion failed and i have recieved the following error:

X_U1.Q13 N00669 X_U1.a138 X_U1.op X_U1.inh_bulk_n NPNXTR
--------------------------------------------------$
ERROR(ORPSIM-16147): Invalid parameter
X_U1.Q14 N00669 X_U1.a071 X_U1.on X_U1.inh_bulk_n NPNXTR
--------------------------------------------------$
ERROR(ORPSIM-16147): Invalid parameter

please find below the output window message

Could you please help me solve this problem

kind regards,

  • 0
    TI__Mastermind 29535 points

    Hello Wael,

      Can you share the LMH6555 simulation and PSpice schematic? 

    Thank you,
    Sima 

  • 0
    Prodigy 10 points

    Hello Sima

    Please find attached the PSpice file

    LMH6555.DSN

    Thank you

  • 0 in reply to Wael JABALLAH
    TI__Mastermind 29535 points

    Hello Wael,

      Thank you for providing the PSpice file. The error log points to this being a library issue:

          Fatal Error: Could not open library file "nom_pspti.lib"

      Thank you for bringing this to our attention. I would need to work with the simulation team on this, and will get back to you by the end of the week. 

    Thank you,

    Sima

  • 0 in reply to Wael JABALLAH
    TI__Mastermind 29535 points

    Hello Wael,

      We have found the fix to the issue. When the netlist was imported to PSpice it changed the brackets to letters which caused a reading error.

      The model within Pspice for TI should be fixed within a week. I have attached the updated fixed netlist below, if you would like to import the model using this video before the fix. Thank you again for pointing this issue out to us. 

    LMH6555.lib

    Thanks,

    Sima 

  • 0 in reply to Sima Jalaleddine
    Prodigy 10 points

    Hello Sima

    Thank your for your support

    I have tried the updated part folloing the video tutorial but the same problem occured again

  • 0 in reply to Wael JABALLAH
    TI__Mastermind 29535 points

    Hello Wael,

      I was able to recreate this, looks like whenever we try to import the model, the software overwrites this imported model with the incorrect model. 

      This is how we got around this issue while we wait on simulation team to update the fix:

    1. Close PSpice for TI

    2. Edit model netlist within the TI library of the PSpice for TI. This is located locally on the user's hard drive. The location is either in

    C:\cds_spb_home\cdssetup\pspTILibDir\LMH6555.lib

    or

    C:\SPB_Data\cdssetup\pspTILibDir\LMH6555.lib

    If you have either or both folders, open LMH6555.lib and delete all contents, and paste all contents from corrected LMH6555.lib file, make sure the contents have changed from 

    This:

    To this:

    (highlighted shows easy way to tell difference, there are more differences in the files)

    3. Save newly edited LMH6555.lib file, and open PSpice for TI. Make sure to click not at this time for library update. If you click yes on this popup, the file we just edited will be overwritten with the incorrect netlist.

    4. Go to your schematic, and select the symbol, then right click on the LMH6555 symbol. Select View PSpice Model, and the netlist will pop up. Make sure these edited lines show up.

    5. Run transient/ac analysis, the errors should be fixed. But, there will be one error which will be this:

    Press Ok. This is just informing you that the software detects a third party. Unfortunately, when you edit a model and you're using it in PSpice for TI, it will no longer be detected as a signed model. So it'll be treated as a third party model.

    Thank you for your patience on this. The team is working on releasing the library as an update to the software. 

    Thank you,

    Sima