This study introduces an innovative dual switch coupled inductor high boost DC-DC converter, addressing the challenges of low gain and high stress in conventional high gain DC-DC converters, applicable in sustainable energy sectors like photovoltaic power generation and fuel cells. The proposed topology structure utilizes clamp diodes and clamp capacitors to weaken the voltage and voltage spikes on the dual switching transistor, while introducing a boost unit and coupling inductance to increase voltage gain. Its performance and efficiency are superior to the compared references, and it achieves higher gain under different turns of coupling inductance ratios. Examine the converter’s various modes of operation and determine its voltage gain, voltage, and current stress. In order to test its performance under different conditions, an experimental prototype was established and the results were analyzed. The rated input voltage for the experiment is 12V, the output voltage is 180V, and the output power is 162W.