Hierarchical Mixed Multirating in Circuit Simulation
M. Striebel (Technische Universität Chemnitz, Germany)
In most applications large integrated circuits comprise subcircuits of different functionality causing heterogeneous transient behaviour. Multirate methods exploit local latency by using different stepsizes according to the subcircuits' activity levels at each time point. Following the idea of mixed multirate for ordinary differential equations a hierarchical ROW-based multirate method that can deal with an arbitrary amount of subcircuits is developed for differential algebraic equations of index 1.