Open ended dynamic ramping simulation of multi-discipline systems

The method described in this paper is a variant of a continuation method. The method enables finding a DC solution using a Dynamic Ramping (also called a "Pseudo Transient" analyses) for circuits where the settling time is not known in advance and is difficult to estimate. The method relies on the nonlinear solution algorithm for proper selection of the time step and for the detection of the steady state. The paper describes the method and presents two circuit examples.