Driver circuit for load in motor car, has bipolar transistor whose load path is provided between gate terminal and power transistor terminal, where base terminal of bipolar transistor is connected with capacitor charged by power transistor

摘要

The circuit (4) has two power transistors (M1, M4) formed as n-channel MOSFETs that are respectively designed as a high-side switch for a load (3) and a battery circuit breaker. Load paths of the respective power transistors are switched between a port (BATT) and the load for a voltage source (2). A load path of a bipolar transistor (Q1) is provided between a gate terminal and a terminal of one of the power transistors. A base terminal of the bipolar transistor is connected with a capacitor (C2), which is charged by the power transistor.