Gate drive techniques to reduce switch on resistance in switching converter applications

A technique and apparatus for driving a transistor gate of a switched mode power supply (SMPS) circuit. One example power supply circuit generally includes a switching converter having a switching transistor and a gate driver having an output coupled to a gate of the switching transistor. The gate driver includes a first switching device coupled between an output of the gate driver and a first voltage rail; a second switching device coupled between an output of the gate driver and a voltage node of the gate driver; a third switching device coupled between the voltage node of the gate driver and the second voltage rail; and a voltage clamp coupled in series with the fourth switching device, the voltage clamp and the fourth switching device being coupled between the third voltage rail and the voltage node (or the output of the gate driver). 一种用于驱动开关模式电源(SMPS)电路的晶体管栅极的技术和设备。一个示例电源电路通常包括具有开关晶体管的开关转换器和具有耦合到开关晶体管栅极的输出的栅极驱动器。栅极驱动器包括：第一开关装置，耦合在栅极驱动器的输出与第一电压轨之间；第二开关装置，耦合在栅极驱动器的输出与栅极驱动器的电压节点之间；第三开关装置，耦合在栅极驱动器的电压节点与第二电压