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LMG3422R050: Help with LMG3422R050 PSpice Simulation

Michael King
Prodigy 10 points
Part Number: LMG3422R050
Other Parts Discussed in Thread: LMG3422R030

I am trying to run a simulation of LMG3422R050. I have downloaded the simulation model from TI's website and opened the model in PSpice for TI. When I try to run the model I get a bunch of errors as shown below:

In trying to figure out why these model parameters are not defined, I have read online that the Edit Simulation profile -> Configuration Files -> Library ... must contain the libraries. I believe I have added the libraries that were included in the model correctly, but perhaps I am mistaken:

I also believe these should be the only two models I need to run the simulation, as these are the only blocks in the schematic:

Thanks for any help in advance!

Best,

Mike

  • 0
    TI__Expert 7435 points

    Hi Mike, 

    Thank you for reaching out about this. We've seen a similar issue to this in the past and are working to debugging if the root of the issue is within the model or version update of PSpice. I have had luck with deleting PSpice and the model file and downloading both again. For now you can try this and see if it works.

    Best,
    Kyle

  • 0 in reply to Kyle Wolf
    Prodigy 10 points

    Hi Kyle,

    I have tried deleting and reinstalling PSpice, as well as the model here: LMG3422R050 data sheet, product information and support | TI.com

    I am still getting undefined errors when I try to run the simulation:

    **** 08/31/23 13:21:06 ******* PSpice 17.4.0 (Nov 2018) ******* ID# 0 ********

 ** Profile: "SCHEMATIC1-test2"  [ c:\users\..\..\..\..\..\12_12_


 ****     CIRCUIT DESCRIPTION


******************************************************************************




** Creating circuit file "test2.cir" 
** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONS

*Libraries: 
* Profile Libraries :
* Local Libraries :
.LIB "../../../iso7710.lib" 
.LIB "../../../synchronous buck_new-pspicefiles/schematic1/test2/lmg3422r050.lib" 
.LIB "../../../synchronous buck_new-pspicefiles/schematic1/test2/iso7710.lib" 
* From [PSPICE NETLIST] section of C:\cds_spb_home\cdssetup\OrCAD_PSpiceTIPSpice_Install\17.4.0\PSpice.ini file:
.lib "nom_pspti.lib" 

*Analysis directives: 
.TRAN  0 1500us 1400us 
.OPTIONS ADVCONV
.OPTIONS FILEMODELSEARCH
.PROBE64 V(alias(*)) I(alias(*)) W(alias(*)) D(alias(*)) NOISE(alias(*)) 
.INC "..\SCHEMATIC1.net" 



**** INCLUDING SCHEMATIC1.net ****
* source SYNCHRONOUS BUCK_NEW
L_L2         N00508 N104989  4.7uH  
R_Rload6         N00508 N105255  1000 TC=0,0 
R_Rload7         N00508 N105267  200k TC=0,0 
R_Rload8         N00508 N105279  200k TC=0,0 
C_C10         N00508 N104996  10u  TC=0,0 
V_V4         N00382 0 DC 0 AC 0
+PULSE 0 400 350u 2000u 1u 10000 10000
V_V5         N41977 N00508 DC 0 AC 0
+PULSE 0 14 0 2u 1u 10000 20000
V_V6         N55997 0 DC 0 AC 0
+PULSE 0 12 0 2u 1u 10000 20000
V_V7         N77423 0 DC 0 AC 0
+PULSE 0 5 0u 1n 1n 4.98u 10u
L_L3         0 N56084  4.7uH  
C_C12         0 N56075  10u  TC=0,0 
R_Rload11         0 N56822  22 TC=0,0 
R_Rload13         0 N106523  200k TC=0,0 
R_Rload12         0 N106519  1000 TC=0,0 
R_Rload14         0 N106527  200k TC=0,0 
X_U3         N70217 N64230 0 N78009 N64141 N00508 ISO7710 
L_L4         N00508 N56822  70uH  
C_C14         0 N56822  100u  TC=0,0 
V_V8         N70217 0 DC 0 AC 0
+PULSE 0 5 10n 2u 1u 10000 20000
X_U4         N70217 N77423 0 N70217 N77530 0 ISO7710 
R_Rload17         N83421 N00382  1 TC=0,0 
V_V9         N64230 0 DC 0 AC 0
+PULSE 0 5 5u 1n 1n 4.98u 10u
C_C15         N122642 0  10u  TC=0,0 
R_Rload18         0 N106128  20k TC=0,0 
R_Rload19         N00508 N104983  20k TC=0,0 
X_U5         N41977 N78009 N64141 N104983 N104989 N104996 N105255 N105267
+  N105279 N00508 N00508 N83421 LMG3422R050 PARAMS:  TEMP_CELSIUS=160
X_U6         N55997 N122642 N77530 N106128 N56084 N56075 N106519 N106523
+  N106527 0 0 N00508 LMG3422R050 PARAMS:  TEMP_CELSIUS=160

**** RESUMING test2.cir ****
.END


ERROR(ORPSIM-15113): Model D_D1a used by X_U5.D_UTOP_U_Ilim1_D66 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U6.D_UTOP_U_Ilim1_D66 is undefined

WARNING(ORPSIM-15256): <X_U5.X_UTOP_U_GAN_FET.T> not a subcircuit param

WARNING(ORPSIM-15256): <X_U6.X_UTOP_U_GAN_FET.T> not a subcircuit param


ERROR(ORPSIM-15113): Model D_D1a used by X_U5.X_UTOP_U_Ilim1_U112.D_D10 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U5.X_UTOP_U_Ilim1_U112.D_D11 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U5.X_UTOP_U_Ilim1_U121.D_D10 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U5.X_UTOP_U_Ilim1_U121.D_D11 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U5.X_UTOP_U_Fault1_U111.D_D10 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U5.X_UTOP_U_Fault1_U111.D_D11 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U6.X_UTOP_U_Ilim1_U112.D_D10 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U6.X_UTOP_U_Ilim1_U112.D_D11 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U6.X_UTOP_U_Ilim1_U121.D_D10 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U6.X_UTOP_U_Ilim1_U121.D_D11 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U6.X_UTOP_U_Fault1_U111.D_D10 is undefined

ERROR(ORPSIM-15113): Model D_D1a used by X_U6.X_UTOP_U_Fault1_U111.D_D11 is undefined

    Should I try to download a previous version of PSpice?

    Thanks again for any help,

    Mike

  • 0 in reply to Michael King
    TI__Expert 7435 points

    Hello Mike,
    We are aware of a small bug in our PSPICE model for LMG3422R030, in many cases the simulation runs with no issues but can sometimes throw unexpected errors. We have seen some success reinstalling both PSPICE and the device model, but understand this does not work every time and is an undesirable temporary solution. We are actively working to fix this problem permanently but need time to work through the design model. We have no other reliable fix to suggest at the moment, and kindly ask that you be patient until we can share an updated device model.

    Best,

    Kyle