Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 30, Issue 9, Pages 4643-4645Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2015.2403199
Keywords
Avalanche breakdown diode (ABD); silicon carbide (SiC); solid state circuit breaker (SSCB); solid state power controller (SSPC); snubber; metal oxide varistor (MOV); transient voltage suppression (TVS)
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A SiC avalanche breakdown diode (ABD) having a nominal 1-kV breakdown voltage was fabricated to provide improved suppression of voltage transients induced during hard-switched turn-off of solid-state devices. Three SiC ABDs were pulsed 1000 times in an inductive load circuit at peak currents of over 100 A. Superior performance in peak pulse current, clamping voltage, and peak pulse power was seen, compared to the results of two series-connected commercial TVS devices, collectively having a comparable breakdown voltage. The transient thermal response of the SiC ABDs was calculated using a model for energy dissipation in short pulses. SiC ABD design parameters and test data were used to show that the reported performance of these devices was not related to package thermal impedance.
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