Patent ID: 7821319
Filing Date: 2010-10-26
Classification: H03K

Abstract:
1. A switching apparatus comprising: a MOS transistor having a control connection and configured to switch on or off when a suitable control potential is provided at the control connection; at least one replica of the MOS transistor with a control connection, wherein the at least one replica of the MOS transistor is smaller than the MOS transistor; a control apparatus for the MOS transistor; a control apparatus for the replica of the MOS transistor; an evaluation arrangement with an output; the control connection of the replica of the MOS transistor being coupled to a first input of the evaluation arrangement, the control connection of the MOS transistor or the control connection of a further replica of the MOS transistor being coupled to a second input of the evaluation arrangement; and the evaluation arrangement providing, at the output, a signal which indicates the start of switching of the MOS transistor by comparing the signal of the first input with the signal of the second input.