The article discusses the integration of a three-stage power converter system to facilitate efficient hydrogen production through electrolysis. The system includes a Phase-Shift Full Bridge (PSFB) converter connected with an interleaved buck (IB) converter to ensure steady current for the electrolyzer. A Vienna rectifier is utilized to link the utility grid with the electrolyzer, maintaining a unity power factor. The study emphasizes fault tolerance, ensuring continuous hydrogen and oxygen generation despite potential circuit faults. Simulation results show that the system can maintain production rates even during faults. The demand for hydrogen is rising globally, with a shift towards renewable-based electrolysis to reduce carbon emissions. Various types of hydrogen production, such as grey, blue, and green hydrogen, are discussed. Green hydrogen from electrolysis using renewable sources like solar and wind energy is a key focus. The article highlights the importance of power converters in electrolyzer integration, especially with renewable sources like photovoltaic systems. Different converter topologies and their roles in hydrogen production are explored. The research aims to support initiatives like India's National Green Hydrogen Mission, emphasizing the transition from fossil fuel-based to green hydrogen production for a sustainable future.