A real-time digital twin of a DC-DC boost converter is developed and verified experimentally using various load scenarios. The developed DT can be used to provide a comprehensive understanding of the system s behavior and support improved decision-making and predictive maintenance. Moreover, this digital twin can be integrated into a larger digital twin system that represents the entire power system hardware. By connecting these digital twins together, a complete digital model of the power system can be created. Results confirm the capability of the developed digital twin and its hardware to reflect the electrical behaviors of the physical twin in real-time. The maximum deviation between the digital twin and the physical twin was ±2%.