Soft switching DC-DC converters with high power density are highly demanded for compact and high-reliability applications. It is beneficial to provide soft switching conditions without an extra switch and a large number of passive components. In this paper, a zero current switching resonant boost converter is introduced which has only one switch and a simple auxiliary circuit including an inductor and a capacitor. The size of the boost inductor is considerably reduced because it acts as a resonant inductor. Due to the simple structure and small inductors, the power density is increased and measured about 106.4 W/in³. There is no extra voltage stress on the switch and the diode. Theoretical analysis of the proposed converter in DCM and CCM operations are presented and verified by the experimental results. Also, conducted EMI of the proposed converter is measured and compared to the regular boost converter, which shows the compliance with CISPR 11 standard.

对于紧凑和高可靠性的应用，要求具有高功率密度的软开关DC-DC转换器。提供软开关条件而不需要额外的开关和大量无源组件是有益的。在本文中，介绍了一种零电流开关谐振升压转换器，该转换器仅具有一个开关以及一个简单的辅助电路，该辅助电路包括电感器和电容器。升压电感器的尺寸大大减小，因为它可以用作谐振电感器。由于结构简单和电感器小巧，功率密度提高了，并测得约为106.4 W / in ³。开关和二极管上没有额外的电压应力。提出了在DCM和CCM操作中拟议的转换器的理论分析，并通过实验结果进行了验证。此外，对所提出的转换器的传导EMI进行了测量，并将其与常规升压转换器进行了比较，这表明其符合CISPR 11标准。