A single-Capacitor Turn-off Snubber for Interleaved Boost Converter with Coupled Inductor

This paper proposes an interleaved boost converter associated with a coupled inductor with a single-capacitor turn-off snubber to reduce the switching loss at turn-off transition. The proposed turn-off snubber is also used to limit rising rate of voltages across switches for reducing spike voltage. In this circuit structure, the proposed converter is operated in an interleaved fashion to reduce output current ripple and with a coupled inductor to increase step-up voltage ratio. As compared with the counterparts of conventional converter topologies, the proposed converter has the merits of less component count, higher efficiency, smaller size, and they are easier to implement. Hardware measurement obtained from experimental prototype have been verified these merits.