Asymmetrical Pulse-Width-Modulated Full-Bridge Secondary Dual Resonance DC–DC Converter

摘要: A full-bridge secondary dual-resonant DC–DC converter using the asymmetrical pulse-width modulated (APWM) strategy is proposed in this paper. The achieves zero-voltage switching for power switches and zero-current rectifier diodes whole load range without help of any auxiliary circuit. Given use APWM strategy, a circulating current that exists traditional phase-shift eliminated. voltage stress also clamped to output voltage. Thus, existing oscillation PSFB converters This paper presents circuit configuration analyzes its operating principle. Experimental results 1 kW 385 V/48 V prototype are presented verify analysis converter.