Problems about pspice transient simulation~~~

Hi,i have made a pspice transient simulation for a circuit,and encounter the problem like this:
ERROR -- Convergence problem in transient analysis at Time = 1.024E-09
Time step = 754.7E-21, minimum allowable step size = 5.000E-18
I don't know how to solve the problem.The simulation setting window like this: .Please help~~

Try leaving the "maximum step size" field empty

Unfortunately, the most important information is missing: The circuit that has produced this error.
The picture provided does not help at all.

Try changing following parameter

ITL4: Increase this to 40 from 10
ABSTOL make this to 1n instead of 1p

If this still not resolved, Try using ÄUTOCONVERGANCE"

Leaving the "maximum step size"field empty takes no effect,i have tried it before,and the error is the same as it is above

Kicchan said:

Try leaving the "maximum step size" field empty

Click to expand...

---------- Post added at 00:18 ---------- Previous post was at 00:14 ----------

I don't think the circuit produced error,the signal source i used is the Vsin,if i changed the frequency to 1kHz(10meg i used before and produced the error),and changed the run time to 5ms,the transient can get a good result without producing any error.

LvW said:

Unfortunately, the most important information is missing: The circuit that has produced this error.
The picture provided does not help at all.

Click to expand...

---------- Post added at 00:24 ---------- Previous post was at 00:18 ----------

Where is the parameter?and how to use AUTOCONVERGANCE?Could you explain it in detail~~~
thank you so much.

atripathi said:

Try changing following parameter

ITL4: Increase this to 40 from 10
ABSTOL make this to 1n instead of 1p

If this still not resolved, Try using ÄUTOCONVERGANCE"

Click to expand...

Go to Option TAB in Simulation Setting dialog, you will find these options there, modify values of above parameter. In same TAB you will find an "AUTOCONVERGANCE" button. I think sharing the circuit or netlist would help us understand the problem and enable us to really help you. Without that we are suggesting the generic solutions.

The following below is the netlist,and when encounter the error,a timerunn setting diag also appear.

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

*Libraries:
* Profile Libraries :
* Local Libraries :
* From [PSPICE NETLIST] section of D:\orcad\tools\PSpice\PSpice.ini file:
.lib "nom.lib"

*Analysis directives:
.TRAN 0 5u 0 0.0005u
.PROBE V(alias(*)) I(alias(*)) W(alias(*)) D(alias(*)) NOISE(alias(*))
.INC "..\SCHEMATIC1.net"



**** INCLUDING SCHEMATIC1.net ****
* source SELF_OPAMP_TEST_
C_C4 N16855 V6+ 0.47745p
E_DIFF8 N16785 0 VALUE {V(0,N16855)}
E_GAIN7 N15456 0 VALUE {3E1 * V(N151484)}
R_R32 N16142 V2- 20k
R_R3 N38536 V8+ 5k
R_R39 V2+ N17604 20k
E_GAIN22 N154164 0 VALUE {1E2 * V(N18319)}
R_R64 N158609 N158605 5k
R_R55 N182471 N150431 5k
E_DIFF6 N16072 0 VALUE {V(0,N16142)}
E_GAIN15 N190267 0 VALUE {3E1 * V(N149888)}
R_R25 V3+ N16048 20k
E_GAIN8 N15510 0 VALUE {3E1 * V(N155369)}
R_R62 N154764 N154760 5k
E_GAIN11 N175839 0 VALUE {3E1 * V(N142027)}
C_C11 N13443 V8+ 0.47745p
R_R4 N13541 0 10meg
E_DIFF10 N17534 0 VALUE {V(0,N17604)}
E_GAIN16 N266657 0 VALUE {3E1 * V(N153569)}
R_R49 N15304 V4+ 20k
C_C19 N150431 0 2p
R_R60 N153573 N153569 5k
R_R23 N267114 V7+ 5k
E_GAIN19 N180150 0 VALUE {3E1 * V(N147907)}
E_GAIN12 N247895 0 VALUE {3E1 * V(N152987)}
C_C6 N17604 V3- 2.65p
C_C31 0 V6+ 100f
R_R51 N160001 N142027 5k
R_R34 V2+ N16855 20k
R_R27 V6+ N16048 20k
R_R41 V3- N18295 20k
E_GAIN20 N17716 0 VALUE {3E1 * V(N158605)}
R_R24 N18389 0 10meg
E_DIFF3 N15232 0 VALUE {V(0,N15304)}
C_C32 0 V6- 100f
C_C26 0 N154760 2p
R_R44 V4+ N13541 20k
C_C28 0 N158605 2p
E_DIFF2 N13483 0 VALUE {V(0,N13541)}
R_R56 N133851 N150963 5k
C_C15 N142027 0 2p
E_DIFF7 N38826 0 VALUE {V(0,N16761)}
E_GAIN5 N152561 0 VALUE {1E2 * V(N15232)}
C_C24 0 N153569 2p
C_C1 N16048 V2+ 1.3265p
V_V2 VIN- 0
+PULSE 0 -1m 1p 2p 2p 0.05u 0.1u
E_GAIN3 N13603 0 VALUE {3E1 * V(N150963)}
R_R29 VIN+ N16142 20k
E_DIFF5 N15976 0 VALUE {V(0,N16048)}
C_C37 0 V4- 100f
E_GAIN13 N167131 0 VALUE {1E2 * V(N38826)}
C_C8 N18389 V7- 0.2385p
R_R36 V2- N17510 20k
C_C20 N150963 0 2p
E_DIFF12 N18319 0 VALUE {V(0,N18389)}
E_GAIN9 N160001 0 VALUE {1E2 * V(N15976)}
E_GAIN4 N38536 0 VALUE {3E1 * V(N154760)}
E_DIFF9 N17438 0 VALUE {V(0,N17510)}
C_C38 0 V4+ 100f
R_R46 V8+ N15304 20k
E_GAIN23 N188403 0 VALUE {3E1 * V(N150431)}
C_C29 0 V2- 100f
E_DIFF1 N13373 0 VALUE {V(0,N13443)}
R_R5 0 N15304 10meg
C_C3 N16761 V6- 0.47745p
E_GAIN17 N174621 0 VALUE {1E2 * V(N17438)}
R_R31 N16048 V2+ 20k
R_R38 V4- N17604 20k
R_R13 0 N16761 10meg
E_GAIN24 N267114 0 VALUE {3E1 * V(N154160)}
C_C10 N15398 V4- 1.3265p
R_R57 N152561 N151484 5k
C_C33 0 V3- 100f
R_R9 0 N16048 10meg
E_GAIN1 N133851 0 VALUE {1E2 * V(N13373)}
R_R6 N15456 V4- 5k
R_R48 V8- N15398 20k
V_V1 VIN+ 0
+PULSE 0 1m 1p 2p 2p 0.05u 0.1u
R_R14 N190267 V6+ 5k
R_R17 0 N17510 10meg
C_C34 0 V3+ 100f
C_C21 N151484 0 2p
C_C5 N17510 V3+ 2.65p
R_R61 N154164 N154160 5k
R_R40 V7- N17604 20k
R_R63 N155373 N155369 5k
R_R33 V2- N16761 20k
R_R10 N175839 V2- 5k
R_R26 VIN- N16048 20k
E_GAIN6 N155373 0 VALUE {1E2 * V(N15328)}
E_DIFF11 N18223 0 VALUE {V(0,N18295)}
R_R52 N174621 N147907 5k
C_C12 N13541 V8- 0.47745p
R_R43 V4- N13443 20k
E_GAIN14 N153573 0 VALUE {1E2 * V(N16785)}
R_R18 N180150 V3- 5k
R_R1 0 N13443 10meg
E_GAIN21 N182471 0 VALUE {1E2 * V(N18223)}
R_R50 N15398 V4- 20k
E_GAIN10 N152991 0 VALUE {1E2 * V(N16072)}
R_R59 N152991 N152987 5k
R_R7 N15510 V4+ 5k
C_C25 0 N154160 2p
C_C16 N147907 0 2p
R_R28 V3- N16142 20k
C_C7 N18295 V7+ 0.2385p
C_C27 0 N155369 2p
R_R42 V3+ N18389 20k
R_R35 V4+ N17510 20k
E_GAIN18 N158609 0 VALUE {1E2 * V(N17534)}
R_R15 N266657 V6- 5k
C_C39 0 V8- 100f
R_R2 N13603 V8- 5k
R_R8 N15398 0 10meg
R_R11 N247895 V2+ 5k
R_R45 V3- N15304 20k
R_R21 0 N18295 10meg
C_C2 N16142 V2- 1.3265p
R_R16 N16855 0 10meg
C_C40 0 V8+ 100f
C_C30 0 V2+ 100f
R_R54 N167131 N149888 5k
L_L2 0 V4+ 1GH
C_C23 0 N152987 2p
E_GAIN2 N154764 0 VALUE {1E2 * V(N13483)}
L_L1 0 V4- 1GH
R_R30 V6- N16142 20k
R_R19 N17716 V3+ 5k
R_R12 N16142 0 10meg
R_R37 V7+ N17510 20k
C_C35 0 V7- 100f
C_C9 N15304 V4+ 1.3265p
R_R22 N188403 V7- 5k
E_DIFF4 N15328 0 VALUE {V(0,N15398)}
R_R47 V3+ N15398 20k
C_C18 N149888 0 2p
C_C36 0 V7+ 100f
R_R20 N17604 0 10meg

**** RESUMING self_opamp_test_.cir ****
.END

**** 07/21/11 12:44:30 ******* PSpice 10.5.0 (Jan 2005) ******* ID# 2090008609
** Profile: "SCHEMATIC1-self_opamp_test_" [ D:\orcad\test_file\self_opamp_test_-pspicefiles\schematic1\self_opamp_test_.sim ]


**** INITIAL TRANSIENT SOLUTION TEMPERATURE = 27.000 DEG C


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



NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE


( V2+) 0.0000 ( V2-) 0.0000 ( V3+) 0.0000 ( V3-) 0.0000

( V4+) 0.0000 ( V4-) 0.0000 ( V6+) 0.0000 ( V6-) 0.0000

( V7+) 0.0000 ( V7-) 0.0000 ( V8+) 0.0000 ( V 0.0000

( VIN+) 0.0000 ( VIN-) 0.0000 (N13373) 0.0000 (N13443) 0.0000

(N13483) 0.0000 (N13541) 0.0000 (N13603) 0.0000 (N15232) 0.0000

(N15304) 0.0000 (N15328) 0.0000 (N15398) 0.0000 (N15456) 0.0000

(N15510) 0.0000 (N15976) 0.0000 (N16048) 0.0000 (N16072) 0.0000

(N16142) 0.0000 (N16761) 0.0000 (N16785) 0.0000 (N16855) 0.0000

(N17438) 0.0000 (N17510) 0.0000 (N17534) 0.0000 (N17604) 0.0000

(N17716) 0.0000 (N18223) 0.0000 (N18295) 0.0000 (N18319) 0.0000

(N18389) 0.0000 (N38536) 0.0000 (N38826) 0.0000 (N133851) 0.0000

(N142027) 0.0000 (N147907) 0.0000

(N149888) 0.0000 (N150431) 0.0000

(N150963) 0.0000 (N151484) 0.0000

(N152561) 0.0000 (N152987) 0.0000

(N152991) 0.0000 (N153569) 0.0000

(N153573) 0.0000 (N154160) 0.0000

(N154164) 0.0000 (N154760) 0.0000

(N154764) 0.0000 (N155369) 0.0000

(N155373) 0.0000 (N158605) 0.0000

(N158609) 0.0000 (N160001) 0.0000

(N167131) 0.0000 (N174621) 0.0000

(N175839) 0.0000 (N180150) 0.0000

(N182471) 0.0000 (N188403) 0.0000

(N190267) 0.0000 (N247895) 0.0000

(N266657) 0.0000 (N267114) 0.0000




VOLTAGE SOURCE CURRENTS
NAME CURRENT

V_V2 0.000E+00
V_V1 0.000E+00

TOTAL POWER DISSIPATION 0.00E+00 WATTS


ERROR -- Convergence problem in transient analysis at Time = 1.024E-09
Time step = 754.7E-21, minimum allowable step size = 5.000E-18

These voltages failed to converge:

V(N153573) = -10.00GV \ -10.00GV
V(N167131) = 10.00GV \ 10.00GV



Last node voltages tried were:

NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE


( V2+) 58.09E+06 ( V2-)-58.09E+06 ( V3+)-546.7E+03 ( V3-) 546.7E+03

( V4+)-3755.4000 ( V4-) 3755.4000 ( V6+) 100.2E+06 ( V6-)-100.2E+06

( V7+) 96.00E+03 ( V7-)-96.00E+03 ( V8+) 1349.1000 ( V-1349.1000

( VIN+) .0010 ( VIN-) -.0010 (N13373)-1360.4000 (N13443) 1360.4000

(N13483) 1360.4000 (N13541)-1360.4000 (N13603)-17.48E+03 (N15232) 2851.8000

(N15304)-2851.8000 (N15328)-2851.8000 (N15398) 2851.8000 (N15456) 37.97E+03

(N15510)-37.97E+03 (N15976)-57.97E+06 (N16048) 57.97E+06 (N16072) 57.97E+06

(N16142)-57.97E+06 (N16761)-100.0E+06 (N16785)-100.0E+06 (N16855) 100.0E+06

(N17438) 592.7E+03 (N17510)-592.7E+03 (N17534)-592.7E+03 (N17604) 592.7E+03

(N17716)-7.675E+06 (N18223)-100.1E+03 (N18295) 100.1E+03 (N18319) 100.1E+03

(N18389)-100.1E+03 (N38536) 17.48E+03 (N38826) 100.0E+06 (N133851)-136.0E+03

(N142027)-25.02E+06 (N147907) 255.8E+03

(N149888) 42.85E+06 (N150431)-42.63E+03

(N150963) -582.7600 (N151484) 1265.5000

(N152561) 285.2E+03 (N152987) 25.02E+06

(N152991) 5.797E+09 (N153569)-42.85E+06

(N153573)-10.00E+09 (N154160) 42.63E+03

(N154164) 10.01E+06 (N154760) 582.7600

(N154764) 136.0E+03 (N155369)-1265.5000

(N155373)-285.2E+03 (N158605)-255.8E+03

(N158609)-59.27E+06 (N160001)-5.797E+09

(N167131) 10.00E+09 (N174621) 59.27E+06

(N175839)-750.7E+06 (N180150) 7.675E+06

(N182471)-10.01E+06 (N188403)-1.279E+06

(N190267) 1.285E+09 (N247895) 750.7E+06

(N266657)-1.285E+09 (N267114) 1.279E+06


**** Interrupt ****

atripathi said:

Go to Option TAB in Simulation Setting dialog, you will find these options there, modify values of above parameter. In same TAB you will find an "AUTOCONVERGANCE" button. I think sharing the circuit or netlist would help us understand the problem and enable us to really help you. Without that we are suggesting the generic solutions.

Click to expand...

You are using 10.5 version which does not have autoconvegance feature. Below is screen shot


you are using lots of behavioral devices, look at message
These voltages failed to converge:

V(N153573) = -10.00GV \ -10.00GV
V(N167131) = 10.00GV \ 10.00GV

These nodes are connected to E GAIN devices, and they are leading to abnormal high voltages. Look into the circuit to see if these are realistic or not. You may want to use LIMIT component to limit these voltages.