A novel active snubber for high-power boost converters |
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| Authors: | Jovanovic MM Yungtaek Jang |
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| Affiliation: | Power Electron. Lab., Delta Products Corp., Research Triangle Park, NC; |
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| Abstract: | 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 inductor 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 |
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