A single-switch high-gain DC-DC converter with expandable structure based on L-C-D voltage pump

This paper presents a novel topological switching power supply circuit based on two topological structures, which is derived from the L-C-D voltage pump structure and the active switched inductor circuit. By leveraging the parallel charging and series discharging characteristics of inductors and capacitors, a higher voltage gain can be achieved with only a single active swit ch and the same duty cycle. Compared with ordinary non-isolated converters, it also has expanded functions, a simpler control method, and the topological order can be flexibly adjusted according to different application scenarios and requirements.