Patent ID: 9007103
Filing Date: 2015-04-14
Classification: H03K

Abstract:
1. A switch circuit arrangement, comprising: a switch circuit; a driver circuit configured to control the switch circuit; a supply circuit configured to power the driver circuit, wherein the supply circuit comprises a first circuit configured to modify an output impedance of the supply circuit to have a first impedance when the driver circuit controls the switch circuit to be in a conducting state and to have a second impedance when the driver circuit controls the switch circuit to change from a non-conducting state to the conducting state; wherein the first circuit comprises a frequency dependent element configured to provide a low impedance when changing from the non-conducting state to the conducting state and to have a high impedance during the conducting state; wherein the frequency dependent element and a resistor are configured as a parallel connection; and wherein an inverse of a time constant of the parallel connection is smaller than two PI times a switching frequency of the switch circuit arrangement, for example smaller than one tenth of two PI times the switching frequency of the switch circuit arrangement.