Ams International Ag

Ams Ag

Camillo Stefanucci

Vincenzo Leonardo

A circuit arrangement is provided where the arrangement of a feedback resistor between a first branch and a second branch enables that a voltage is provided at an output terminal in an efficient way, this means with a high settling speed and a low current consumption. The feedback resistor is arranged between a reference node and the output terminal, where the reference node is connected to a current mirror. The circuit arrangement can be employed as a gate driver. Furthermore, a driver block and a method of driving a circuit arrangement are provided.

Circuit arrangement for a gate drive with a feedback resistor

An output driver () comprises a driver transistor (MP) having a gate node (GMP) to apply a gate control voltage (GCV) and a gate control circuit () to control the gate node (GMP) of the driver transistor (MP). The output driver () is configured to be operable in a first operation mode and a second operation mode, the variable resistance of the current path of the driver transistor (MP) being lower in the first operation mode than in the second operation mode. The gate control circuit () comprises a controllable resistor (RC), the controllable resistor (RC) being disposed between the gate node (GMP) of the driver transistor (MP) and an output node (QP) of the output driver (), and a resistance of the controllable resistor (RC) being dependent on operating the output driver in the first or second operation mode.

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Jona, Switzerland

Camillo Stefanucci