A Model Reference Voltage Mode Control for Ripple Cancellation Buck Converter of Wide-Operation Range

In this paper, the design considerations of a discontinuous-conduction-mode buck converter with an output ripple cancellation circuit, which enables extra attenuation at a particular frequency, was presented as the power-stage topology. Meanwhile, a model reference voltage mode control (MRVMC), which preserves the stability margin at various working conditions, was proposed as loop control method for the power-stage. Finally, experimental verification was conducted to illustrate the effectiveness of the theoretical findings and design approaches.