In this study, the integration of buck converter with Cuk converter to achieve a non-isolated high step-down dc–dc converter is investigated. Also, a soft-switching cell is modified and used in the integrated converter to provide zero current switching and zero voltage switching condition for the converter switches at turn-on and turn-off, respectively. The auxiliary cell also eliminates the reverse recovery problem of the converter diodes. As a result, a high efficiency high step-down converter with reduced voltage stress for semiconductor components is derived. The analysis, operational principle and design considerations of the proposed converter are discussed in this study. The accuracy of the converter operation is verified by a 200 W, 155 V-to-24 V laboratory prototype.

中文翻译：

---

具有低电压应力和宽软开关范围的高降压DC-DC转换器

在本研究中，研究了降压转换器与Cuk转换器的集成，以实现非隔离的高降压DC-DC转换器。同样，软开关单元被修改并用于集成转换器中，以分别在导通和关断时为转换器开关提供零电流开关和零电压开关条件。辅助电池还消除了转换二极管的反向恢复问题。结果，获得了用于半导体部件的具有减小的电压应力的高效高降压转换器。这项研究讨论了拟议的转换器的分析，工作原理和设计考虑因素。转换器操作的精度已通过200 W，155 V至24 V的实验室原型验证。