High voltage integrated Miller capacitor feedback circuit

摘要

A circuit for controlling an electronic semiconductor switching device to limit the in-rush current when an expansion board is plugged into an electronic system. An integrated thin-film capacitor is used in a high-voltage feedback circuit by attenuating the output voltage, which can be substantially greater than the breakdown voltage of the capacitor, with an integrated voltage divider. An adequate slew rate is obtained using a low capacitance by providing a high-impedance internal feedback node that is coupled to the gate of a power FET with a voltage buffer.