Other Parts Discussed in Thread: LM5118
Hello,
I'm running TI's PSPICE reference design for the LM5118 steady-state model (Using PSPICE 16), and it's not converging. I'm not sure how to fix this; any suggestions?
Here's the log:
**** 08/07/14 19:55:45 ***** PSpice 16.6.0 (October 2012) ***** ID# 0 ********
** Profile: "STEADY_STATE-STEADY_STATE" [ E:\LM5118 PSPICE\lm5118_trans-pspicefiles\steady_state\steady_state.sim ]
**** CIRCUIT DESCRIPTION
******************************************************************************
** Creating circuit file "STEADY_STATE.cir"
** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONS
*Libraries:
* Profile Libraries :
* Local Libraries :
.LIB "../../../lm5118_trans.lib"
* From [PSPICE NETLIST] section of C:\Users\mhwang\AppData\Roaming\SPB_Data\cdssetup\OrCAD_PSpice/16.6.0/PSpice.ini file:
.lib "nom.lib"
*Analysis directives:
.TRAN 0 4.18m 4.16m 80n SKIPBP
.OPTIONS ADVCONV
.OPTIONS ABSTOL= 1E-08
.OPTIONS GMIN= 1.0E-11
.OPTIONS ITL1= 1000
.OPTIONS ITL2= 2000
.OPTIONS ITL4= 100
.OPTIONS RELTOL= 0.01
.OPTIONS VNTOL= 1E-05
.PROBE64 V(alias(*)) I(alias(*))
.INC "..\STEADY_STATE.net"
**** INCLUDING STEADY_STATE.net ****
* source LM5118_TRANS
R_Rsource N212699 VIN 50m TC=0,0
V_Vin1 N212699 0
+PWL 0 0 1u 16.5 4.18m 16.5
V_V_Iinductor N315125 SW2 0Vdc
R_R3 0 N315029 6.49K TC=0,0
X_D1 SW2 VOUT MBRD1035
R_R12 N315219 VOUT 8.66k TC=0,0
X_D1_1 SW2 VOUT MBRD1035_1
R_R7 0 N315109 18.7K TC=0,0
C_C15 0 N315181 0.39n TC=0,0
C_C16 0 N315197 22n TC=0,0
R_R9 N315219 0 1k TC=0,0
C_C7 VOUT 0 1000n TC=0,0
R_R4 COMP N315339 17.4K TC=0,0
C_C18 N315219 N315339 10n TC=0,0
X_COUT N315491 0 COUT PARAMS: IC=0 C=200u ESR=0.012
V_V_Icout VOUT N315491 0Vdc
C_C17 COMP N315219 0.56n TC=0,0
V_V_Iout VOUT N315669 0Vdc
C_C20 0 N315371 1000n TC=0,0
R_R13 N314957 0 0.015 TC=0,0
X_Q1 VIN N315477 SW1 Si7148_Q1
X_L1 N315125 SW1 L1 PARAMS: IC=0 L=10u DCR=0.0255
X_D4 N314957 SW1 UB0100C
X_D4_1 N314957 SW1 UB0100C_1
C_C8 N315495 SW1 100n TC=0,0
X_CIN VIN 0 CIN PARAMS: IC=0 C=44u ESR=0.025
X_U1 VIN N315029 N315109 N314997 N315181 N315197 N315219 COMP VOUT 0 0
+ N314957 N315515 N315495 N315477 SW1 N315371 VOUT LM5118_TRANS
R_R1 N315029 VIN 27.4K TC=0,0
X_Q2 SW2 N315515 0 Si7148_Q2
R_R2 N314997 VIN 1MEG TC=0,0
C_C6 0 VIN 100n TC=0,0
R_Rload 0 N315669 4 TC=0,0
**** RESUMING STEADY_STATE.cir ****
.END
Reducing minimum delta to make the circuit converge.
Reducing minimum delta to make the circuit converge.
Reducing minimum delta to make the circuit converge.
ERROR(ORPSIM-15138): Convergence problem in transient analysis at Time = 157.9E-12.
Time step = 305.2E-21, minimum allowable step size = 1.000E-18
These voltages failed to converge:
V(X_U1.XA29.YINT) = 404.16uV \ 2.485pV
These supply currents failed to converge:
I(X_U1.XA29.E_ABMGATE) = -404.16uA \ -2.485pA
These devices failed to converge:
X_U1.XA_loqset.E_ABMGATE X_U1.XA_loqrst.E_ABMGATE X_U1.XA21.E_ABMGATE1
X_U1.XA250n.E_ABMGATE1 X_U1.XA_pwmset.E_ABMGATE X_U1.XA29.E_ABMGATE
X_U1.XA_pwmrst.E_ABMGATE X_U1.XA32.E_ABMGATE1
Last node voltages tried were:
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
( SW1) 18.02E-06 ( SW2) 12.29E-12 ( VIN) 45.51E-06 ( COMP) 152.0E-06
( VOUT) 1.938E-12 (X_L1.3) 18.03E-12 (N212699) .0026
(N314957) 1.444E-06 (N314997) 45.51E-12
(N315029) 8.716E-06 (N315109) .0187
(N315125) 12.29E-12 (N315181) .0019
(N315197) .0352 (N315219) 152.0E-06
(N315339) 152.0E-06 (N315371) 901.3E-09
(N315477) 21.46E-06 (N315491) 1.938E-12
(N315495) 18.02E-06 (N315515) 1.010E-12
(N315669) 1.938E-12 (X_CIN.3) 45.51E-06
(X_Q1.21) 45.51E-06 (X_Q1.d2) 45.10E-06
(X_Q1.g2) 21.46E-06 (X_Q1.s2) 18.06E-06
(X_Q2.d2) 11.22E-12 (X_Q2.g2) 1.010E-12
(X_Q2.s2) 74.14E-15 (X_U1.V7) 7.0000
(X_COUT.3) 1.938E-12 (X_U1.CLK) .3000
(X_U1.CSi) .0180 (X_U1.CSo) .1978
(X_U1.DRV) 1.7500 (X_U1.loQ) 1.7500
(X_U1.tst) 0.0000 (X_U1.CLK1) .3000
(X_U1.CSGi) .0182 (X_U1.loQN) 1.7500
(X_U1.PWMQ) 1.7500 (X_U1.conv3)-4.657E-06
(X_U1.CSout)-59.43E-06 (X_U1.HIrst) 2.960E-12
(X_U1.Lorst) 0.0000 (X_U1.oscQN) .4969
(X_U1.pkrmp) 1.0012 (X_U1.PWMQN) 1.7500
(X_U1.SSmax) .1502 (X_U1.SSmin) .0070
(X_U1.unsat) 3.4999 (X_U1.clkdly) .0012
(X_U1.CSoffs) .2000 (X_U1.curlim) 1.4500
(X_U1.CURrst) 0.0000 (X_U1.DRVdly) 0.0000
(X_U1.enable) .1500 (X_U1.erramp) .5104
(X_U1.gateHI) -.0138 (X_U1.gateLO) -.0686
(X_U1.ground) 0.0000 (X_U1.LDOctl) 50.0000
(X_U1.logic1) 901.3E-09 (X_U1.Lorst2) 0.0000
(X_U1.maxerr) .5104 (X_U1.minTon) 0.0000
(X_U1.REGctl) 0.0000 (X_U1.regout) 23.21E-06
(X_U1.rstloQ) 0.0000 (X_U1.rstPWM) 0.0000
(X_U1.sawCTL) 0.0000 (X_U1.SCSctl) -.0195
(X_U1.setloQ) 1.7500 (X_U1.setPWM) 1.7500
(X_U1.SSclmp) .1502 (X_U1.trigon) 0.0000
(X_U1.Vccgen) 901.3E-09 (X_U1.VccTST) 45.51E-06
(X_U1.Vccval) 901.3E-09 (X_U1.Vstart) 45.47E-09
(X_U1.endTonA) .2091 (X_U1.erramp1) 152.0E-06
(X_U1.initrst) 1.7500 (X_U1.triggen) .0275
(X_U1.trigger) 0.0000 (X_U1.trigoff) 0.0000
(X_U1.tst_int) 0.0000 (X_U1.endBOOST) -1.0000
(X_U1.sawtooth) 0.0000 (X_U1.SRampctl) .0020
(X_U1.XA6.YINT) 0.0000 (X_U1.XA7.YINT) 0.0000
(X_U1.XVCOA1.3) 3.0553 (X_U1.XVCOA1.4) 4.0000
(X_U1.XVCOA1.5) -4.0000 (X_U1.XVCOA1.6)-409.3E-06
(X_U1.XVCOA1.7) -2.0000 (X_U1.boostmode) 0.0000
(X_U1.bstCLKinv) 1.7500 (X_U1.bstminTon) 0.0000
(X_U1.DriveBuck) 0.0000 (X_U1.genPWMrst) 0.0000
(X_U1.narrowctl) 0.0000 (X_U1.XA13.YINT) 0.0000
(X_U1.XA14.YINT) 0.0000 (X_U1.XA15.YINT) 0.0000
(X_U1.XA16.YINT) 0.0000 (X_U1.XA18.YINT) 3.5000
(X_U1.XA19.YINT) 0.0000 (X_U1.XA20.YINT) 3.5000
(X_U1.XA21.YINT) 3.4996 (X_U1.XA22.YINT) 0.0000
(X_U1.XA26.YINT) 0.0000 (X_U1.XA28.YINT) 3.5000
(X_U1.XA29.YINT) 404.2E-06 (X_U1.XA30.YINT) 0.0000
(X_U1.XA32.YINT) 3.4996 (X_U1.XA33.YINT) 3.5000
(X_U1.XA37.YINT) 3.5000 (X_U1.buckCLKinv) 1.7500
(X_U1.DriveBoost) 0.0000 (X_U1.DriveBuckA) -.0020
(X_U1.EmulatedIL) .0022 (X_U1.XA_DFF.MY5) 3.5000
(X_U1.XA_DFF.Qbr) 3.5000 (X_U1.XA_DFF.Qqq) .7894
(X_U1.DriveBoostA) -.0098 (X_U1.enable_init) .3000
(X_U1.HSmagnified) -.0018 (X_U1.SCSctl_init) -1.0000
(X_U1.XA200n.YINT) .3000 (X_U1.XA_DFF.Qint) .7894
(X_U1.rmpplusdiode) 1.1876 (X_U1.XA250n.YINT1) 0.0000
(X_U1.XA250n.YINT2) 0.0000 (X_U1.XA250n.YINT3) 0.0000
(X_U1.XA_DFF.MYVSS) 0.0000 (X_U1.XA_DFF.Qqqd1) .0386
(X_U1.DriveBuckAint) -1.0000 (X_U1.XA_DFF.CLKdel) .4969
(X_U1.XA_DFF.CLKint) 0.0000 (X_U1.XA_DFF.X2.YINT) 0.0000
(X_U1.XA_loqrst.YINT) 3.4996 (X_U1.XA_loqset.YINT) 3.4992
(X_U1.XA_minTon.YINT) 0.0000 (X_U1.XA_pwmrst.YINT) 3.4996
(X_U1.XA_pwmset.YINT) 3.4992 (X_U1.XA_Toggle.YINT) 0.0000
(X_U1.CS2CSGmagnified) -.0014 (X_U1.XA_DFF.X1.YINT1) 0.0000
(X_U1.XA_DFF.X1.YINT2) 0.0000 (X_U1.XA_DFF.X1.YINT3) 3.5000
(X_U1.XA_DFF.X3.YINT1) 0.0000 (X_U1.XA_DFF.X3.YINT2) 0.0000
(X_U1.XA_DFF.X3.YINT3) 0.0000 (X_U1.DriveBoostA_init) -1.0000
(X_U1.XA_400ns_dlyx.YINT1) 0.0000 (X_U1.XA_400ns_dlyx.YINT2) 0.0000
(X_U1.XA_400ns_dlyx.YINT3) 0.0000
**** Interrupt ****
