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Zero voltage and zero current switched PWM DC-DC converters using active snubber technique

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2 Author(s)
Zhu, J.Y. ; Dept. of Autom. Control, Nanjing Univ. of Aero. & Astron., China ; Ding, D.H.

A novel active snubber soft switched method is proposed to achieve zero-voltage and zero-current switching (ZV-ZCS) for PWM DC-DC power converters. The unique location of the snubber capacitor and inductor ensures low current stress and commutation losses in the auxiliary circuit. A boost converter adopting this technique is presented as an example, to illuminate its operation principles and derive the design procedures. Simulation and hardware implementation of a 350 W, 150 kHz boost converter have been made to validate the operation and the efficiency improvement compared to its hard-switching counterpart. Some other basic PWM DC-DC topologies applied with proposed snubber have also been given.

Published in:

Industry Applications Conference, 1998. Thirty-Third IAS Annual Meeting. The 1998 IEEE  (Volume:2 )

Date of Conference:

12-15 Oct. 1998