Gate Lifetime of P-Gate GaN HEMT in Inductive Power Switching

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dc.contributor.authorWang, Bixuanen
dc.contributor.authorZhang, Ruizheen
dc.contributor.authorWang, Hengyuen
dc.contributor.authorHe, Quanboen
dc.contributor.authorSong, Qihaoen
dc.contributor.authorLi, Qiangen
dc.contributor.authorUdrea, Florinen
dc.contributor.authorZhang, Yuhaoen
dc.date.accessioned2024-04-08T15:12:00Zen
dc.date.available2024-04-08T15:12:00Zen
dc.date.issued2023-06en
dc.description.abstractThe small gate overvoltage margin is a crucial concern in applications of GaN Schottky-type p-gate high electron mobility transistors (SP-HEMTs). The parasitic inductance of the gate loop can induce repetitive gate-voltage (VG) spikes during the device turn-on transients. However, the gate lifetime of the GaN SP-HEMTs under VG overshoot in power converters still remains unclear. We fill this gap by developing a new circuit method to measure the gate switching lifetime. The method features several capabilities: 1) LC-resonance-like VG overshoots with pulse width down to 20 ns and dVG/dt up to 2 V/ns; 2) adjustable power loop condition including the drain-source grounded (DSG) as well as the hard switching (HSW); and 3) repetitive switching test at an adjustable switching frequency (fSW). We use this method to test over 150 devices, and found that the gate lifetimes under a certain peak magnitude of VG overshoot (VG(PK)) can be fitted by both Weibull and Lognormal distributions. The gate lifetime is primarily determined by the number of switching cycles and is higher under the HSW than under the DSG conditions. Finally, the max VG(PK) for 10-year gate lifetime is predicted under different fSW in both DSG and HSW conditions. The results provide direct reference for GaN SP-HEMT’s converter applications and a new method for the device gate qualification.en
dc.description.versionAccepted versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1109/ISPSD57135.2023.10147610en
dc.identifier.urihttps://hdl.handle.net/10919/118511en
dc.language.isoenen
dc.publisherIEEEen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectGaNen
dc.subjectHEMTen
dc.subjectgateen
dc.subjectspikeen
dc.subjectovervoltageen
dc.subjectswitchingen
dc.subjectreliabilityen
dc.subjectlifetimeen
dc.subjecthard switchingen
dc.subjectpower switchingen
dc.titleGate Lifetime of P-Gate GaN HEMT in Inductive Power Switchingen
dc.title.serial2023 35th International Symposium on Power Semiconductor Devices and ICs (ISPSD)en
dc.typeConference proceedingen
dc.type.dcmitypeTexten

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