Patent ID: 7557599
Filing Date: 2009-07-07
Classification: G01R,H03K

Abstract:
1. A circuit configuration, comprising: a power switch having a control connection and load connections, said power switch being a transistor; a bonding wire connected between one of said load connections and one of a load and a terminal for a first supply potential; and a current measuring configuration indicating a current flowing through said power switch by using a potential at said bonding wire, said current measuring configuration having a first input terminal, a second input terminal and a third input terminal, said first input terminal of said current measuring configuration being connected to a node common to a first one of said load connections of said power switch and said bonding wire, said second input terminal of said current measuring configuration being connected to a second one of said load connections of said power switch, said third input terminal receiving a second supply potential; said current measuring configuration including a series circuit having a measuring transistor with a drain-source path and a variable resistor connected in series with said load path of said measuring transistor, said series circuit is connected between said second input terminal of said current measuring configuration and said third input terminal of said current measuring configuration.