Implementation of piecewise-linear DC analysis in APLAC

Recently, we have developed many extensions to the piecewise-linear (PWL) DC analysis method. In this paper, working solutions are proposed for filling the gap between the academically oriented method and real-world DC-simulation problems. Thanks to the solutions proposed, our PWL DC analysis method is, finally, general and efficient enough to be implemented in a general-purpose circuit simulator. This paper describes the APLAC implementation of our PWL DC analysis method. The method is combined with the conventional DC analysis method of APLAC in a robust and user-friendly manner. The operation of the APLAC implementation is demonstrated with simulation examples.