A novel active snubber for high-power boost converters

M.M. Jovanovic, Yungtaek Jang
2000 IEEE transactions on power electronics  
A technique which improves the performance of the boost converter by reducing the reverse-recovery-related losses in the boost switch and rectifier with an active snubber that is implemented with a minimum number of components is presented. This minimum-component-count snubber consists of a snubber inductor, an auxiliary switch, and a rectifier. The proposed technique reduces the reverse-recovery-related losses by controlling the turn-off di/dt rate of the rectifier current with the snubber
more » ... ctor connected in series with the boost switch and rectifier. The voltage and current stresses of the components in the proposed active-snubber boost converter are similar to those in its conventional "hard-switched" counterpart. Index Terms-Active snubber, boost converter, power factor correction, reverse recovery loss, zero voltage switching. O.C., one of the world's largest manufacturers of power supplies). His 23-year experience includes the analysis and design of high-frequency, high-power-density power processors; modeling, testing, evaluation, and application of high-power semiconductor devices; analysis and design of magnetic devices; and modeling, analysis, and design of analog electronics circuits. His current research is focused on power conversion and management issues for portable data-processing equipment, design optimization methods for low-voltage power supplies, distributed power systems, and power-factor-correction techniques.
doi:10.1109/63.838100 fatcat:q7hufi3gajfipnnvhoepw6tmbq