A technique for reducing rectifier reverse-recovery-related losses in high-power boost converters

A circuit technique that reduces the boost power converter losses caused by the reverse-recovery current of the rectifier is described. The losses are reduced by inserting an inductor in the series path of the boost switch and a rectifier to control the di/dt rate of the rectifier during its turn off. The energy from the inductor after the boost switch turn off is returned to the input or delivered to the output via an active snubber.

[1]  Bruce W. Carsten,et al.  Design techniques for transformer Active reset circuits at High Frequencies and Power levels , 1990 .

[2]  K. M. Smith,et al.  A comparison of voltage-mode soft-switching methods for PWM converters , 1997 .

[3]  J. A. Bassett.  New, zero voltage switching, high frequency boost converter topology for power factor correction , 1995, Proceedings of INTELEC 95. 17th International Telecommunications Energy Conference.

[4]  Ivo Barbi,et al.  A new family of ZVS-PWM active-clamping DC-to-DC boost converters: analysis, design, and experimentation , 1996, Proceedings of Intelec'96 - International Telecommunications Energy Conference.

[5]  Fred C. Lee,et al.  Novel zero-voltage-transition PWM converters , 1992 .

[6]  D. Tollik,et al.  High efficiency telecom rectifier using a novel soft-switched boost-based input current shaper , 1991, [Proceedings] Thirteenth International Telecommunications Energy Conference - INTELEC 91.

[7]  Fred C. Lee,et al.  Utilization of an active-clamp circuit to achieve soft switching in flyback converters , 1994, Proceedings of 1994 Power Electronics Specialist Conference - PESC'94.

[8]  K. Harada,et al.  Switched snubber for high frequency switching , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.