A new resonant gate-drive circuit with efficient energy recovery and low conduction loss

W Eberle, YF Liu, PC Sen - IEEE Transactions on Industrial …, 2008 - ieeexplore.ieee.org
W Eberle, YF Liu, PC Sen
IEEE Transactions on Industrial Electronics, 2008ieeexplore.ieee.org
In this paper, a new resonant gate-drive circuit is proposed to recover a portion of the power-
MOSFET-gate energy that is typically dissipated in high-frequency converters. The proposed
circuit consists of four control switches and a small resonant inductance. The current through
the resonant inductance is discontinuous in order to minimize circulating-current conduction
loss that is present in other methods. The proposed circuit also achieves quick turn-on and
turn-off transition times to reduce switching and conduction losses in power MOSFETs. An …
In this paper, a new resonant gate-drive circuit is proposed to recover a portion of the power-MOSFET-gate energy that is typically dissipated in high-frequency converters. The proposed circuit consists of four control switches and a small resonant inductance. The current through the resonant inductance is discontinuous in order to minimize circulating-current conduction loss that is present in other methods. The proposed circuit also achieves quick turn-on and turn-off transition times to reduce switching and conduction losses in power MOSFETs. An analysis, a design procedure, and experimental results are presented for the proposed circuit. Experimental results demonstrate that the proposed driver can recover 51% of the gate energy at 5-V gate-drive voltage.
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