Novel nonlinear control method for PWM DC-DC converter with optimizing transient response

A nonlinear control method is proposed to control switch-mode power converters. The controller can correct switching errors with linear resetting technique reversely. There is no steady-state error when the power source voltage is perturbed. The converter can operate steadily with automatic limited integration output under the condition of discontinuous conduction or critical condition. The double feed-forward compensation provides optimizing transient response for load disturbance. The proposed method is excellent performance in power source perturbation rejection, following the reference and load disturbance rejection. The proposed method is general and applicable to most types of resonant based, or soft-switched PWM converters.