IEC 63505 ED1 gives guidance on VT measurement methods and conditioning prior to VT testing in SiC power MOSFETs to reduce or eliminate the effect of the aforementioned hysteresis. The method is applicable for PBTI testing, NBTI and threshold voltage changes caused by switching events are excluded from the scope.
SiC MOSFETs have threshold voltage hysteresis caused by transient trap effects, which impacts the evaluation of the actual the VT shift caused by stress tests such as bias temperature instabilities (BTI).
Life cycle
NOW
IN_DEVELOPMENT IEC 63505 ED1 50.20
Proof sent to secretariat or FDIS ballot initiated: 8 weeks Oct 25, 2024
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