Invention Grant
US08749995B2 Single-pulse resonant gate driver for driving switches in resonant isolated converters and other systems 有权
用于驱动谐振隔离转换器和其他系统中的开关的单脉冲谐振栅极驱动器

Single-pulse resonant gate driver for driving switches in resonant isolated converters and other systems
Abstract:
A gate driving circuit includes a driving stage configured to receive an input signal and generate a gate drive signal for a gate of a transistor switch. The gate driving circuit also includes an LC circuit having an inductor and a gate capacitance of the transistor switch. The LC circuit is configured so that a pulse in the gate drive signal generates a ringing in the LC circuit at a resonance frequency of the LC circuit to transfer energy into and out of the gate capacitance of the transistor switch. A switch could selectively couple the gate of the transistor switch to ground in order to discharge the gate capacitance. A control circuit could be used to provide the input signal, and the control circuit could be configured to regulate a duty cycle of the gate drive signal by adjusting an off-time between consecutive pulses in the input signal.
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