This article proposes a high step-up, low switching voltage stress DC-DC converter based on the traditional Boost circuit, incorporating switched-capacitor (SC) and coupled-inductor (CL) techniques. The design approach of this converter involves replacing the single switch in a single-switch DC-DC converter with SC, combining CL together, and integrating the resonant boost circuit with the Boost circuit. Compared to other traditional DC-DC converters, the improved topology of the power switches in this design exhibits lower voltage stress, lower diode current stress, fewer total components, and a common ground. The working mode and steady-state analysis of the converter are provided, and the stress derivation of the components and theoretical efficiency analysis are conducted. A comparison with other DC-DC converters is also performed. Finally, experiments are conducted on a 200W DC-DC converter prototype to verify the reliability of this converter.