Design and Simulation of Two Proposed LLC DC-DC Resonant Converters

Abstract This paper introduces two proposed LLC (Inductor-Inductor-Capacitor) DC-DC resonant converters aimed at electronic applications. The first converter is designed to operate as a positive power supply, while the second functions as a negative power supply, together forming a flexible configuration capable of serving either single output (+V) systems or dual output (±V) systems. Both circuits were modeled and simulated using OrCAD-PSpice, a tool providing high accuracy in replicating real-world circuit behavior and the results of physical experiments. Their performance was validated through integration into a class D audio amplifier, demonstrating effective power delivery and reliable operation of the complete system. By tackling the design struggles, the proposed designs offer efficient and reliable solutions, provide a contribution to the development of modern low-power systems, suitable for both single and dual output configurations.