Lossless gate driver circuit for a high frequency converter

Details Lossless gate driver circuit for a high frequency converter Lossless gate driver circuit for a high frequency converter

1989-12-08

1991-04-23

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307584, 307585, 307451, 307448, H03K 17687, H03K 19017

Patent

active

050102613

ABSTRACT:
A high efficiency gate driver circuit for driving a power switching device of a high frequency converter includes a series resonant circuit for making resonant transfers of energy between the input capacitance of the power switching device and a storage capacitor to achieve substantially lossless gate switching. An ac switch couples the resonant circuit to the junction between upper and lower switching devices connected in a half-bridge configuration. The upper and lower switches of the half-bridge function to maintain the power switching device in either an ON-state or an OFF-state, respectively, depending on the transfer of energy being made. Timing circuitry ensures proper gating of the switching devices relative to operation of the ac switch.

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W. A. Tabisz et al., "Zero-Voltage-Switched Quasi-Resonant Buck and Flyback Converters--Experimental Results at 10 MHz", Power Electronics Specialists Conference Record, pp. 404-413.

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