A full bridge soft switched telecom power supply with a current doubler rectifier

This paper presents a full bridge soft switched PWM telecom power supply with a current doubler rectifier. The full bridge PWM DC-to-DC power converter offers high power handling capability, minimum VA ratings for the main devices, no additional auxiliary components and simple PWM-based control strategy. Phase shift control is employed to regulate the output voltage and achieve soft switching. The transformer leakage inductance is utilized effectively to achieve zero voltage turn-on for the main devices. The current doubler rectifier has only one diode conduction drop in addition to frequency doubling in the output capacitor. The transformer secondary winding current rating is one half the load current which improves the overall efficiency of the power converter.

[1]  Arthur Leroy Cook.  Elements of electrical engineering : a textbook of principles and practice , 1935 .

[2]  T. M. Undeland,et al.  A DC-DC converter topology with phase shift control and lossless snubbers for use in a 200 A battery charger working on 400 V mains , 1995, Proceedings of INTELEC 95. 17th International Telecommunications Energy Conference.

[3]  F. Lee,et al.  High-voltage, high-power, ZVS, full-bridge PWM converter employing an active snubber , 1991, [Proceedings] APEC '91: Sixth Annual Applied Power Electronics Conference and Exhibition.

[4]  N. H. Kutkut,et al.  Current mode control of a full bridge DC-to-DC converter with a two inductor rectifier , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[5]  D.M. Divan,et al.  Design considerations for high power high frequency transformers , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[6]  F.C. Lee,et al.  Design considerations for high-voltage high-power full-bridge zero-voltage-switched PWM converter , 1990, Fifth Annual Proceedings on Applied Power Electronics Conference and Exposition.

[7]  Fred C. Lee,et al.  Small-signal modeling of average current-mode control , 1993 .

[8]  Martin F. Schlecht,et al.  A 1 kW, 500 kHz front-end converter for a distributed power supply system , 1989, Proceedings, Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[9]  M. Jovanovic,et al.  An improved zero-voltage-switched PWM converter using a saturable inductor , 1991, PESC '91 Record 22nd Annual IEEE Power Electronics Specialists Conference.

[10]  Deepakraj M. Divan,et al.  An Improved Full-Bridge Zero-Voltage Switching PWM Converter Using a Two-Inductor Rectifier , 1995, IEEE Transactions on Industry Applications.