Sliding-mode controlled Cuk switching regulator with fast response and first-order dynamic characteristic

SMC (sliding-mode control) is successfully applied to the Cuk power converter. It results in a high-performance switching regulator with fast response and first-order dynamic characteristic and with an extremely strong ability to suppress the line-voltage and the load-current disturbances of both small and large signals, even with nonpulsating input and output currents. The performance of the SMC Cuk regulator is determined by its feedback gains. Other high-order power stages, such as the augmented boost and augmented buck converters and the buck converter with input filter, could also be handled by SMC to obtain a high-performance, closed-loop system