An average model of Tapped Inductor (TI) PWM topology was developed and verified experimentally. The proposed generic and topology independent model is compatible with SPICE and can be run on any electronic circuit simulator for DC (static transfer function), AC (small signal) and TRAN (large signal, time domain) analyses. The model can also be applied to derive analytical expressions of static and dynamic transfer functions. It is shown that the classical PWM topologies are private cases of the TI topologies and can be analyzed and simulated by the TI model developed in this study. The proposed simulation methodology was applied to study the advantages and weaknesses of TI PWM topologies.