Gate driver power supply arrangement for cascode-connected super-junction MOSFETs in a bridge-leg

McNeill, Neville and Hopkins, Andrew and Williams, Barry W. (2022) Gate driver power supply arrangement for cascode-connected super-junction MOSFETs in a bridge-leg. Electronics Letters, 58 (25). pp. 988-990. ISSN 0013-5194 (https://doi.org/10.1049/ell2.12667)

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Abstract

This letter presents a circuit for powering cascode gate driver circuits with super-junction (SJ) MOSFETs in a bridge-leg. The cascode gate driver gives inherent MOSFET intrinsic diode deactivation, and the bridge-leg incorporates an inductive turn-on snubber which controls the charging currents into the MOSFETs’ output capacitances. The cascode driver circuits and snubber inductor are configured such that the gate-drive energy is derived from the power stage.