Title :
A novel hybrid half bridge DC-DC converter with wide ZVS-range and high efficiency
Author :
Wang, Wei ; Chen, Huiming ; Wu, X.K. ; Qian, Zhaoming
Author_Institution :
Power Electron. Res. Inst., Zhejiang Univ., Hangzhou, China
Abstract :
A novel high efficiency phase-shifted PWM DC-DC converter is proposed in this paper. Compared to the conventional phase-shifted full-bridge converters, it can significantly reduce the circumfluent loss and achieve zero-voltage switching over almost the full load-range. Even more, due to the improved voltage waveform at the input of the LC filter, the proposed converter requires much lower inductance to limit the inductor ripple current to a specified value. Operating principle is depicted in detail in this paper. Experimental results from a 500 W prototype converter operating at 100 kHz with isolated 48 V/10 A output are presented to validate the theoretical analysis.
Keywords :
DC-DC power convertors; PWM power convertors; inductors; passive filters; switching convertors; 10 A; 100 kHz; 48 V; 500 W; DC-DC converter; LC filter; ZVS; inductance; inductor ripple current; phase-shifted PWM converter; phase-shifted full-bridge converters; voltage waveform; zero voltage switching; Bridge circuits; DC-DC power converters; Filters; Inductance; Inductors; Prototypes; Pulse width modulation; Pulse width modulation converters; Switching converters; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355799
