Title :
A modified asymmetrical pulse-width-modulated resonant DC/DC converter topology
Author :
Mangat, Simmi ; Xi, Youhao ; Jain, Praveen K. ; Liu, Yan Fei
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
A modified asymmetrical pulse-width-modulated resonant DC/DC converter employing an auxiliary circuit is proposed in this paper. The auxiliary circuit consists of a network of two capacitors and an inductor. The aim of this network is to produce zero-voltage-switching (ZVS) over a wide input voltage range, while reducing the voltage and current stress across the resonant inductor. A detailed analysis is presented and performance curves are given. Experimental results for a 35 W, 5 V converter show an efficiency of about 81% at a constant operating frequency of 500 kHz
Keywords :
DC-DC power convertors; PWM power convertors; resonant power convertors; switching circuits; 35 W; 5 V; 500 kHz; 81 percent; ZVS; asymmetrical PWM resonant DC/DC converter; auxiliary circuit; capacitors; current stress; efficiency; inductor; performance curves; resonant inductor; voltage stress; wide input voltage range; zero-voltage-switching; Capacitors; DC-DC power converters; Frequency conversion; Inductors; Performance analysis; Pulse circuits; RLC circuits; Resonance; Stress; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.701969
