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1.7kV JFET Eases High Voltage Utility Power Supply Design

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  • Author: Mike Zhu
In this application note, a discrete 1.7kV SiC JFET together with a 30V Si MOSFET in the cascode configuration is used as the main power switch in a flyback utility power supply. The JFET not only provides good efficiency, but also simplifies the startup circuitry by doubling as the startup circuit’s high voltage pass element.
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