在贵网站上下载的ucc3895芯片的瞬态spice模型，在orcad16.3中仿真，可以一直报错，提示一些器件不收敛，不知如何解决？
--------------- Simulation Profile: 3895-44 ---------------
Simulation running...
** Profile: "3895-44" [ D:\Cadence\myproject\zvs-pspicefiles\3895\44.sim ]
Reading and checking circuit
Circuit read in and checked, no errors
Calculating bias point for Transient Analysis
Starting power supply stepping
Convergence problem in transient bias point calculation
These voltages failed to converge:
V(N01257) = 3.000V \ 1.595V
V(N01514) = 49.63mV \ 17.23mV
V(N00170) = 4.975V \ 2.645V
V(N00309) = 746.29mV \ 396.82mV
V(N00287) = 746.29mV \ 396.82mV
5 of 5 errors shown. See output file for complete list...
These supply currents failed to converge:
I(X_U1.EVref) = -0.996mA \ -529.38uA
I(X_U1.EVref2) = -42.98uA \ -22.85uA
I(X_U1.EBVDELab) = -74.63uA \ -39.68uA
I(X_U1.EBVDELcd) = -74.63uA \ -39.68uA
I(X_U1.X14.ECC) = -46.74uA \ -12.40uA
5 of 5 errors shown. See output file for complete list...
These devices failed to converge:
X_U1.D2
X_U1.DCAB1
X_U1.DCAB2
X_U1.DCAB4
X_U1.DCAB5
5 of 5 errors shown. See output file for complete list...
Simulation paused
Simulation running...
Starting power supply stepping
Convergence problem in transient bias point calculation
These voltages failed to converge:
V(N01257) = 3.000V \ 1.595V
V(N01514) = 49.63mV \ 17.23mV
V(N00170) = 4.975V \ 2.645V
V(N00309) = 746.29mV \ 396.82mV
V(N00287) = 746.29mV \ 396.82mV
5 of 5 errors shown. See output file for complete list...
These supply currents failed to converge:
I(X_U1.EVref) = -0.996mA \ -529.38uA
I(X_U1.EVref2) = -42.98uA \ -22.85uA
I(X_U1.EBVDELab) = -74.63uA \ -39.68uA
I(X_U1.EBVDELcd) = -74.63uA \ -39.68uA
I(X_U1.X14.ECC) = -46.74uA \ -12.40uA
5 of 5 errors shown. See output file for complete list...
These devices failed to converge:
X_U1.D2
X_U1.DCAB1
X_U1.DCAB2
X_U1.DCAB4
X_U1.DCAB5
5 of 5 errors shown. See output file for complete list...
Simulation paused