Silicon Carbide Driver Using High Voltage Capacitors for Isolation and Signal Transmission

Abstract: a gate driver circuit to receive an input drive signal and output an output drive signal is provided. the gate driver circuit may include a first capacitor having first and second terminals, a second capacitor having first and second terminals, a first set of switches to selectively couple the first terminals of the first and second capacitors to the input drive signal and a power supply voltage, a second set of switches to selectively couple the second terminals of the first and second capacitors to a reference voltage and a high impedance node, and a comparator having a first terminal coupled to the reference voltage and a second terminal coupled to the high impedance node. the comparator may output the output drive signal based on a comparison of the reference voltage and a voltage at the high impedance node.

Inventor(s): David Gammie

CPC Classification: H03K17/567 (PULSE TECHNIQUE (measuring pulse characteristics ; modulating sinusoidal oscillations with pulses ; transmission of digital information ; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation ; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified ; coding, decoding or code conversion, in general ))

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