Ultra-Wide Voltage Range Control of DC-DC Full-Bridge Converter with Hysteresis Controller

Converters with wide range output voltage play an important role in some specific industrial applications. Using traditional DC-DC converter for this reason brings many challenges. In the full-bridge converter, high conversion ratio of the transformer and voltage drop on the leakage inductance, limits the converter gain. Moreover, drastic changes in the output voltage cause the linear controllers to malfunction. In this paper a design is proposed for the full-bridge converter with hysteresis controller to prepare ultra-wide output voltage range. The feasibility of this converter which is used phase-shift modulation along the adaptive band nonlinear hysteresis controller is investigated with converter modeling and simulation results.