Method For Simulating Circuitry By Dynamically Modifying Device Models That Are Problematic For Out-of-Range Voltages

摘要

A simulation system (1) prevents failure of simulation computations to converge due to out-of-range conditions of a first device model including a first equation (Eqn.(1)) utilized in simulation computations involving the first device model by identifying an out-of-range condition (e.g., v_dV₀) which is likely to prevent convergence of simulation computations involving the first equation during a simulation run, and by automatically providing a second equation (Eqn.(6) or Eqn.(9)) in place of the first equation (Eqn.(1)), wherein the second equation defines a simpler mathematical function than the first equation and is more likely than the first equation to allow simulation computations to converge to a desired solution during the simulation run. The method includes automatically determining any time at which the out-of-range condition no longer exists and automatically modifying the first device model by replacing the second equation with the first equation.