Extended boost converter boundary control law based on natural switching surfaces

This paper extends the boundary control law for conventional boost converters based on natural switching surfaces, and improves both the steady state and transient response. Additional switching zones on the normalized state plane are defined to decide switching behavior. Operation with state limitations, capacitor equivalent series resistance, and parasitic losses is examined and verified in simulation. The transient bandwidth for the load disturbance rejection and command tracking approaches the physical limits of boost converters. Simulation and experimental results are presented to illustrate the major benefits of the extended boundary control law.