Macromodeling ideal switches for SPICE

Representing switches in terms of SPICE-acceptable elements is important for simulating DC-DC converters, switching mode power supplies, and power electronic circuits. Some time back, Xu and Yu [1988] proposed an equivalent circuit model for a switch employing independent and controlled voltage sources and resistors. Two basic questions come to mind in examining this model: (i) Is it possible to devise other equivalent models? (ii) If so, can we create superior models? The answer to both questions is yes.<
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