Multi-output Resonant DC-DC Converter

This paper proposes a multi-output resonant DC-DC converter with the fixed-on time modulation method. The converter maintains full-range voltage regulation regardless of load variations. Besides, zero-voltage switching (ZVS) turn-on for power switches and zero-current switching (ZCS) turn-off for power diodes are achieved, effectively reducing switching losses and improving the system efficiency. This paper systematically analyzes the operating principle of the converter, and a detailed mathematical model is developed to characterize its voltage regulation. Furthermore, simulations are conducted to verify the theoretical analysis. The results demonstrate that the proposed converter achieves excellent voltage stability, validating the proposed topology’s effectiveness in enhancing voltage stability and system efficiency.