Flexible simulation of multi-frequency averaged and high-fidelity switch-level models with control loops

Accurate and fast simulation environments are required for dynamic characterization and transient studies of switching converters. Fidelity of simulation depends on the level of detail considered in model formulation; High fidelity can be achieved by incorporating the higher-order parasitic effects in switch-level models, or by considering more harmonics in multi-frequency averaged models. A numerical multi-resolution simulation environment is developed that mathematically extract desired model order and, thus, the simulation resolution from a high-fidelity converter model. A simulation engine with flexible resolution levels results in an accelerated simulation speed in low-resolution mode. It can also utilize a high-resolution mode to “zoom-in” and study a higher frequency phenomenon.