Circuit arrangement for rapidly controlling in particular inductive loads

摘要

A circuit arrangement for rapidly switching in particular inductive loads, comprises a load ( 11 ) being connectable to a supply voltage source ( 31 ) by means of a switching transistor( 41 ) implemented as an N-channel MOS power transistor and connected as a high-side switch, a potential exceeding the voltage of the supply voltage source ( 31 ) being applicable to the gate electrode of the switching transistor ( 41 ) by controllable switching means, said switching means incorporating at least a first switching-means transistor ( 52 ) whose collector current can flow at least in part to the gate electrode of the switching transistor ( 41 ) during the conducting state. The first switching-means transistor ( 52 ) is connected as a current source. Furthermore, the first switching-means transistor ( 52 ) connected as a voltage source can be part of a current mirror circuit.