Abstract
In this paper, single event effects (SEE) in a proposed high voltage 4H-SiC lateral double-diffused metal-oxide-semiconductor (LDMOS) field-effect transistor is studied by using the 2D TCAD device simulator. Firstly, the sensitive volume of the proposed device is determined by the single ion striking different parts of the device. Then, effect of different LET and different drain bias on the transient drain current and lattice temperature has also been investigated. Thirdly, the mechanism of single event burnout has been discussed in detail. Finally, electric fields in gate oxide have been studied. According to simulation results, the sensitive volume is related to the device structure. Moreover, there is an amplification bipolar effect in the time evolution of the drain current, which is due to the activation of the parasitic bipolar transistor near the source region in the proposed device.
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