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UNIVERSAL CLAMPING CIRCUIT FOR AUTOMOTIVE SWITCH GATE DRIVES
UNIVERSAL CLAMPING CIRCUIT FOR AUTOMOTIVE SWITCH GATE DRIVES
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机译:用于汽车交换机栅极驱动器的通用钳位电路
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摘要
An automotive vehicle includes an electric machine, a traction battery, and a power converter. The power converter transfers power between the electric machine and traction battery. The power convert includes a switch that defines a portion of a phase leg, a gate driver circuit that provides provide power to a gate of the switch, and a clamping circuit. The clamping circuit includes a clamping switch that, responsive to the gate driver circuit being de-energized and a voltage of the gate exceeding a predetermined threshold value, conducts current from the gate to dissipate the voltage and clamp the gate to an emitter of the switch.
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