uc3842仿真开关电源,voltages failed出错的讨论
用multisim 13可以仿真,用orcad 16.3仿真出现voltages failed错误。电路参数是一样的。不知道问题如何解决。请高手指点。不胜感激!
multisim 13仿真图:
orcad 16.3仿真出错:
错误如下:
Convergence problem in transient bias point calculation
These voltages failed to converge:
V(N17093) = -363.25mV \ -2.022nV
V(X_U1.xinstuc3842.18) = -363.25mV \ -2.022nV
These supply currents failed to converge:
I(X_U1.xinstuc3842.XU18.EV24) = 473.40uA \ 471.40uA
I(X_U1.xinstuc3842.XU18.VV7) = 473.40uA \ 471.40uA
Simulation paused
orcad16.3 uc3842附件:
我的看法:看提示是静态点电压、电流不符合uc3842模型里的电压、电流范围。但在uc3842 Vcc 7脚加上100欧电阻,也出错。不知如何解决?