Multiresonant and Multimode Operation of the Switched-Resonator Converters

The multiresonant and multimode operations of the switched-resonator converter are revealed in this article. Distributed inductors of a switched-resonator converter can be operated either in resonant or linear modes. As a result, there are four operation regimes that cannot be observed in the conventional resonant and hybrid switched-capacitor converters. The duty ratio modulation of the control signals not only switches the converter operation between different regimes but also regulates output voltage while having soft switching. In addition to that, the switching frequency of the converter can be modulated to achieve the aforementioned objectives. Realization of a switched-resonator converter based on this concept having buck-boost characteristics is presented in this article. Operation of the proposed converter is analyzed, and it is verified using experimental results.