An assembly comprising: an insulated gate bipolar transistor abbreviated as IGBT; a gate driver for supplying a supply voltage to a gate terminal the IGBT; and a short-circuit protection circuit comprising: an IGBT short-circuit detector for determining whether the IGBT is subject to a short-circuit condition; and a supply voltage regulator (535; 565) for regulating, e.g. reducing, the supply voltage in response to the IGBT short-circuit detector determining that the IGBT is subject to a short-circuit condition; characterised in that the supply voltage regulator (535; 565) comprises a circuit adapted to regulate the supply voltage based on a constant current provided by a power source (537; 567); the supply voltage regulator comprises a single voltage reference generator which provides a single voltage reference value and a voltage divider which is adapted to obtain, from the single voltage reference value, relatively higher and lower supply voltages, or the supply voltage regulator comprises at least two voltage reference generators (573, 575), which provide relatively higher and lower voltage reference values for generating relatively higher and lower supply voltages, respectively; and the gate driver is adapted to supply the relatively higher supply voltage to the gate terminal of the IGBT when the IGBT short-circuit detector determines that the IGBT is not subject to a short-circuit condition and to supply the relatively lower supply voltage to the gate terminal of the IGBT when the IGBT short-circuit detector determines that the IGBT is subject to a short-circuit condition. an insulated gate bipolar transistor abbreviated as IGBT; a gate driver for supplying a supply voltage to a gate terminal the IGBT; and a short-circuit protection circuit comprising: an IGBT short-circuit detector for determining whether the IGBT is subject to a short-circuit condition; and a supply voltage regulator (535; 565) for regulating, e.g. reducing, the supply voltage in response to the IGBT short-circuit detector determining that the IGBT is subject to a short-circuit condition; an IGBT short-circuit detector for determining whether the IGBT is subject to a short-circuit condition; and a supply voltage regulator (535; 565) for regulating, e.g. reducing, the supply voltage in response to the IGBT short-circuit detector determining that the IGBT is subject to a short-circuit condition; characterised in that the supply voltage regulator (535; 565) comprises a circuit adapted to regulate the supply voltage based on a constant current provided by a power source (537; 567); the supply voltage regulator comprises a single voltage reference generator which provides a single voltage reference value and a voltage divider which is adapted to obtain, from the single voltage reference value, relatively higher and lower supply voltages, or the supply voltage regulator comprises at least two voltage reference generators (573, 575), which provide relatively higher and lower voltage reference values for generating relatively higher and lower supply voltages, respectively; and the gate driver is adapted to supply the relatively higher supply voltage to the gate terminal of the IGBT when the IGBT short-circuit detector determines that the IGBT is not subject to a short-circuit condition and to supply the relatively lower supply voltage to the gate terminal of the IGBT when the IGBT short-circuit detector determines that the IGBT is subject to a short-circuit condition.