Abstract: There are some problems such as the low voltage gain, high voltage stress in switch tubes, input current and output voltage with large ripple. This paper proposes a DC-DC converter, which is formed by differential connection of two multi-level boost converters. First, a detailed analysis is conducted on the topology, working state, and circuit parameter design of the proposed converter. The theoretical analysis results show that when the duty cycle is 0.5, the ripple of the input current and output voltage cancel each other, and this new converter has obvious ripple suppression function. When the capacitor operates in a complementary switching mode, the reduction of capacitor ripple reduces the size of the capacitor. In addition, the new converter does not require the addition of additional switches, and the design of the driving and control circuits is simple. A comparative analysis is conducted of the proposed converter and other similar converters in terms of voltage gain, number of components, and voltage stress of semiconductor devices, further demonstrating the superior performance of the proposed converter. Finally, the correctness of the theoretical analysis and the proposed topology structure are verified through simulation and prototype experiments. The converter can reduce component voltage stress and improve voltage gain.