A discrete-time ideal switch model has been widely used in electronic design automation (EDA) tools in various power electronics applications, including integrated power electronics building block, due to its simplicity. However, this simplicity often results in reduced accuracy, leading to inappropriate automated design parameters and degraded design performance. To address these issues, this digest proposes a new switch model that captures the output capacitance nonlinear characteristic of the switch. In addition, dead-time operation is implemented to demonstrate the switching loss calculation based on the proposed switch model. Its accuracy is validated through commercial circuit simulation and experimental waveform measurements using an LLC resonant converter prototype, showing up to 90% lower root mean square error compared to the ideal model.
