LM74502: Pspice for TI simulation

Hi Michael,

Welcome to E2E!

May be the model is not released to "Pspice for TI". Can you download from ti.com https://www.ti.com/product/LM74502#design-tools-simulation and try once.

Best Regards,

Rakesh

Hi Rakesh,

I had the same issue occur. Additionally, after downloading the model from TI site, the simulation of the stock model does not work. Here is the output log:

**** 05/15/24 13:17:29 **** PSpice 23.1.0 (30 January 2024) *** ID# 0 ********

** Profile: "LM74502_Startup-LM74502_Startup" [ C:\Users\jjomi\OneDrive - Umich\TensegrityBarOneDrive\006-000-0000-Modular Tensegri

**** CIRCUIT DESCRIPTION

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

** Creating circuit file "LM74502_Startup.cir"
** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONS

*Libraries:
* Profile Libraries :
* Local Libraries :
.LIB "../../../lm74502_trans.lib"
* From [PSPICE NETLIST] section of C:\cds_spb_home\cdssetup\OrCAD_PSpiceTIPSpice_Install\23.1.0\PSpice.ini file:
.lib "nom_pspti.lib"
.lib "nom.lib"

*Analysis directives:
.TRAN 0 60m 0 100n
.OPTIONS ADVCONV
.OPTIONS FILEMODELSEARCH
.PROBE64 V(alias(*)) I(alias(*))
.INC "..\LM74502_Startup.net"

**** INCLUDING LM74502_Startup.net ****
* source LM74502_TRANS
V_V1 VINA 0
+PULSE 0 12 1m 1m 1u 1 2
X_C3 0 VOUTA LM74502_Startup_C3
R_R1 N16773172 VINA 100k TC=0,0
C_C4 0 VINA 0.165u
R_RLOAD 0 VOUTA {12/2}
R_R2 0 N16773172 3.48k TC=0,0
X_Q1 VINA GATE VOUTA DMT6007LFG
C_C2 0 VOUTA 2.2u
D_D1 0 VINA SMBJ33A
C_C1 VCAP VINA 100n
X_U1 VINA GATE 0 N16774384 N16773172 VINA VOUTA VCAP LM74502_TOP

.subckt LM74502_Startup_C3 1 2
C_C3 1 _SR C_C3 220u
.model C_C3 CAP C=1
RESR_C3 _SR 2 0.16
.ends LM74502_Startup_C3

**** RESUMING LM74502_Startup.cir ****
.END

INFO(ORPSIM-15423): Unable to find index file nom_pspti.ind for library file nom_pspti.lib.

INFO(ORPSIM-15422): Making new index file nom_pspti.ind for library file nom_pspti.lib.

ERROR(ORPSIM-15065): Unable to open index file C:\cds_spb_home\cdssetup\pspTILibDir\nom_pspti.ind.

ERROR(ORPSIM-15107): Unable to make index for library file C:\cds_spb_home\cdssetup\pspTILibDir\nom_pspti.lib.

INFO(ORPSIM-15423): Unable to find index file nom_pspti.ind for library file nom_pspti.lib.

INFO(ORPSIM-15422): Making new index file nom_pspti.ind for library file nom_pspti.lib.

ERROR(ORPSIM-15065): Unable to open index file C:\cds_spb_home\cdssetup\pspTILibDir\nom_pspti.ind.

ERROR(ORPSIM-15107): Unable to make index for library file C:\cds_spb_home\cdssetup\pspTILibDir\nom_pspti.lib.

Hi Jonathan,

I will look for the cause and get back to you in a couple of days.

Regards,

Shiven Dhir

Hi Shiven, do you have any updates?

Hi Jonathan, 

I tried to run the model on my system, and it ran fine. It is hard to replicate this.

Can you remove this library from the simulation profile and run again?

Regards,

Shiven Dhir

Hi Shiven,

Reinstalled PSpice a couple times seemed to fix the problem.

I have an additional question - the supplied model is the non-H variant with 60uA drive strength right?