2021
DOI: 10.1109/tpel.2021.3090031
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Overvoltage and Oscillation Suppression Circuit With Switching Losses Optimization and Clamping Energy Feedback for SiC MOSFET

Abstract: The snubber circuit is a cost-effective solution to reduce the severe turn-OFF overvoltage and oscillation caused by the fast switching characteristics of SiC MOSFET. However, the turn-ON switching losses will significantly increase as the snubber decouples the power loop parasitic inductance during the switching process. In this article, the effect of the power loop parasitic inductance on the switch performance of SiC MOSFETs and the quasizero voltage switching (QZVS) turn-ON condition are studied. On this b… Show more

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Cited by 23 publications
(14 citation statements)
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“…Therefore, the power capability of snubbers needs to be redundant to ensure a safety margin for reliable operation in practice. But high-power loss elements will introduce parasitic inductance L snb into the snubber loop, which considerably increases power losses and impairs the damping effect [16,17]. Herein, the sensitivity of RLC damping and RC snubber to L snb is analyzed.…”
Section: Discussionmentioning
confidence: 99%
See 3 more Smart Citations
“…Therefore, the power capability of snubbers needs to be redundant to ensure a safety margin for reliable operation in practice. But high-power loss elements will introduce parasitic inductance L snb into the snubber loop, which considerably increases power losses and impairs the damping effect [16,17]. Herein, the sensitivity of RLC damping and RC snubber to L snb is analyzed.…”
Section: Discussionmentioning
confidence: 99%
“…Herein, the three reasonable assumptions are introduced. it is ignored for circuit simplification and only the output capacitor C oss is considered [13][14][15][16][17].…”
Section: Equivalent Circuit For Switching Oscillations Eiminationmentioning
confidence: 99%
See 2 more Smart Citations
“…RC snubber offers reduced cost and complexity compared with the active gate driver and slightly less energy losses compared with the gate resistance method. RC snubber is a widely adopted solution for oscillation attenuation (McMurray, 1972;Josifović et al, 2011;Josifovic et al, 2012;Salem and Wood, 2014;Vaculik, 2014;Joko et al, 2015;Liu et al, 2016a;Liu et al, 2016b;Torsaeter et al, 2016;Chen et al, 2021;Yang et al, 2021). Choosing optimum values of snubber for effective oscillation suppression is essential.…”
Section: Rc Snubbersmentioning
confidence: 99%