A Periodic Clearing Mode Based One Cycle Control Method with High Dynamic Performance

One cycle control(OCC) is widely used in the DC-DC converter owing to its good dynamic performance. By adopting OCC, the average value of the switched variable is equal to or proportional to the control reference in one cycle. However, the clearing signal depends on the comparison result, which affects the dynamic performance of the OCC. Therefore, an OCC method adopting the constant frequency clock as the clearing signal is proposed in this paper to enhance the dynamic performance, in which the integration value is cleared regularly regardless of the comparison result. This proposed OCC with high dynamic performance is verified by both simulation and experiment.