Closed-Loop Simulation of Push-Pull DC-DC Converters

When performing closed-loop simulation of push-pull DC-DC converters, comprehensive analysis of voltage feedback control is essential to ensure output stability. This typically involves implementing PID controllers or more advanced control algorithms in simulation environments like MATLAB/Simulink or PLECS, where key parameters such as proportional, integral, and derivative gains must be tuned to achieve optimal transient response and steady-state accuracy. In practical applications, this type of converter is widely employed in various power management systems, including electric vehicle chargers and solar panel charging controllers. The simulation models often incorporate component libraries for transformers, MOSFETs, and feedback circuits, with stability analysis performed through Bode plots or Nichols charts to verify phase and gain margins. Compared to other DC-DC converter topologies, push-pull converters demonstrate higher efficiency and superior stability due to their balanced transformer operation and reduced switching losses, making them particularly suitable for high-reliability applications. For engineers, thorough understanding of both the converter's operating principles (including flux balancing and switching frequency optimization) and the closed-loop control simulation process—covering controller design, compensation network implementation, and system verification—is crucial for developing robust power conversion systems.