Control circuit for MOSFET or insulated-gate bipolar transistor power end stage has power driver stage controlled by input stage with current sinks and associated current detectors

摘要

The control circuit has a power driver stage, for controlling the power end stage, which is controlled by an input stage (40), receiving the input signals, having a current sink and a current detector, with different earth potentials (GND1,GND2) for the current sink and the current detector. The input stage has an inverter for supplying inverted input signals to the input of a further current sink of the input stage, followed by its own current detector.