Patent ID: 7218164
Filing Date: 2007-05-15
Classification: H03K

Abstract:
1. A driving network for an emitter-switching circuit wherein said emitter-switching circuit comprises a pair of cascode-configured transistors, the one of the bipolar type and the other of the MOS type, and said driving network of the type comprising a driving block for respective conduction terminals and of said pair of transistors, and wherein the driving block comprises: sensor means in said driving block, including a resistor connected in series to said bipolar transistor control terminal suitable for measuring voltage; a first comparator block connected at the input to the terminals of said resistor of said sensor means and at the output to a third node of said first comparator block comparing said measured voltage and generating a voltage signal which is proportional to the storage time of said emitter-switching block; and a negative feedback network, between the output of said first comparator block and said driving block to provide a voltage value to said driving block to bias said conduction terminal of the bipolar transistor of said emitter-switching circuit in order to regulate the storage time thereof.