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A 2.8kV, Forward Drop JBS Diode with Low Leakage
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2000
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Junction Barrier SchottkySemiconductor TechnologyElectrical EngineeringElectronic DevicesEngineeringSemiconductor DeviceHigh Voltage EngineeringElectronic EngineeringApplied PhysicsPower Semiconductor DeviceBlocking VoltageLow LeakageJbs DesignPower ElectronicsPower SemiconductorsMicroelectronicsPower Electronic Devices
High voltage Schottky-, Junction Barrier Schottky (JBS)- and PiN-diodes with an implanted JTE termination have been fabricated on the same 4H-SiC wafer. Blocking voltages of 2.5-2.8 kV were reached for JBS and PiN diodes while the Schottky diodes reach about 2.0 kV. It is shown that the JBS design increases the blocking voltage effectively compared to the Schottky device with less than 10% increase in on-state static losses. Also, a comparison of static losses to a PiN diode gives a decrease of 40% for the JBS. The leakage current is also lowered by two decades compared to the Schottky device at its blocking voltage. Temperature measurements show that the low leakage current is maintained up to at least 225 °C.