An active gate controlled semiconductor protection switch using SiC-MOSFET is proposed to achieve the fault tolerant operation\nof ISOP (Input Series and Output Parallel) connected multicell dc-dc converter.The SiC-MOSFET with high temperature capability\nsimplifies the configuration of the protection circuit, and its on-resistance control by the active gate controller realizes the smooth\nprotection without the voltage and the current surges.The first laboratory prototype of the protection switch is fabricated by using\na SiC-MOSFET with a high frequency buck chopper for the active gate controller. The effectiveness of the proposed protection\nswitch is verified, taking the impact of the volume reduction into account.
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