Issue link: https://resources.pcb.cadence.com/i/1180526
PSpice User Guide Convergence and "time step too small errors" October 2019 840 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. The message always includes the banner (ERROR -- convergence problem ...) and the trailer (Last node voltages tried were ...). It cannot include all three of the middle blocks. The Last node voltages tried... trailer shows the voltages tried at the last Newton-Raphson iteration. If any of the nodes have unreasonable large values this is a clue that these nodes are related to the problem. "These voltages failed to converge" lists the specific nodes which did not settle onto consistent values. It also shows their values for the last two iterations. "These supply currents failed converge" does the same for currents through voltage sources and inductors. If any of the listed numbers are +/- 1e10 then that is an indication that the value is being clipped from an unreasonable value. Finally, "These devices failed to converge" shows devices whose terminal currents or core fluxes did not settle onto consistent values. The message gives a clue as to the part of the circuit which is causing the problem. Looking at those devices and/or nodes for the problems discussed above is recommended. These voltages failed to converge: V(x2.23) = 1230.23 / -68.4137 V(x2.25) = -1211.94 / 86.6888 These supply currents failed to converge: I(X2.L1) = -36.6259 / 2.25682 I(X2.L2) = -36.5838 / 2.29898 These devices failed to converge: X2.DCR3 X2.DCR4 x2.ktr X2.Q1 X2.Q2 Last node voltages tried were: NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE ( 1) 25.2000 ( 3) 4.0000 ( 4) 0.0000 ( 6) 25.2030 (x2.23) 1230.2000 (X2.24) 9.1441 (x2.25) -1211.9000 (X2.26) 256.9700 (X2.28) -206.6100 (X2.29) 75.4870 (X2.30) -25.0780 (X2.31) 26.2810 (X3.34) 1.771E-06 (X3.35) 1.0881 (X3.36) .4279 (X2.XU1.6) 1.2636