Method and apparatus for rapid short-circuit detection of short circuits at gate-controlled power switches

A fast short circuit detection method for detecting a short circuit SC at a gate-controlled power switch (4), the method comprising the steps of providing (S1) a measurement signal VLS, m in response to a voltage drop [Delta] VLS along a stray inductance LS of the gate-controlled power switch (4), and providing (S2) a voltage drop [Delta] VLS along the stray inductance LS of the gate-controlled power switch (4) in response to the voltage drop [Delta] VLS along the stray inductance LS of the gate-controlled power switch (4). M exceeds a reference voltage Vref and the gate-controlled power switch (4) is in an on state, generating (S2) a short circuit detection signal VSC. 一种用于检测栅极控制的功率开关(4)处的短路SC的快速短路检测方法，所述方法包括以下步骤：响应于沿着所述栅极控制的功率开关(4)的杂散电感LS的电压降ΔVLS而提供(S1)测量信号VLS,m，以及在所提供的测量信号VLS,m超过基准电压Vref并且所述栅极控制的功率开关(4)处于接通状态的情况下生成(S2)短路检测信号VSC。