Process for activating a circuit arrangement for power semiconductors of an inverter, and circuit arrangement

1 . A method of activating a circuit arrangement for power semiconductors of an inverter with at least one phase having at least two power semiconductors connected in parallel with one another by a passive network, wherein the at least two power semiconductors are divided into two groups, wherein the method comprises:

dynamically activating a first group of the at least two power semiconductors with a first driver during a switch-on operation, wherein the dynamic activation of the first group depends on a first operating point of the circuit arrangement; and

delaying activation of a second group of the at least two power semiconductors relative to the first group via the passive network, wherein the passive network comprises decoupling inductances, and wherein at least one of the decoupling inductances is a physical component in a form of an inductor and distinct from an electrical connection line.

2 . The method according to claim 1 , further comprising:

delaying an arrival of discharge currents of at least one power semiconductor of the second group to at least one power semiconductor of the first group with the at least one decoupling inductance between the first group and the second group.

3 . The method according to claim 2 ,

wherein a total semiconductor area of the first group is smaller than a total semiconductor area of the second group.

4 . A circuit arrangement, wherein the circuit arrangement is part of an inverter of an electronic module for activating an electric drive of a vehicle equipped with the electric drive, the circuit arrangement comprising:

at least two power semiconductors connected in parallel with one another by a passive network, wherein the at least two power semiconductors are divided into a first group and a second group; and

a separate first driver of the first group, wherein the first driver is configured to switch on the first group prior to the second group being switched on, wherein the first driver is configured to dynamically activate the first group according to a first operating point of the circuit arrangement;

wherein the passive network delays activation of the second group relative to the first group,

wherein the passive network comprises decoupling inductances, and

wherein at least one of the decoupling inductances is a physical component in a form of an inductor and distinct from an electrical connection line.

5 . The circuit arrangement according to claim 4 , wherein at least one power semiconductor of the first group is connected in a commutating circuit with low impedance.

6 . The circuit arrangement according to claim 4 , wherein the first group is coupled to the second group via decoupling inductances.

7 . An inverter comprising the circuit arrangement according to claim 4 .

8 . An electric drive of a vehicle, comprising:

an electronic module for activating an electric drive, wherein the electric drive comprises the inverter according to claim 7 .

9 . A vehicle comprising the electric drive according to claim 8 .

10 . The circuit arrangement according to claim 4 ,

wherein at least one power semiconductor of the first group is configured to discharge parasitic capacitance discharge currents of at least one power semiconductor of the second group.

11 . A circuit arrangement, wherein the circuit arrangement is part of an inverter of an electronic module, the circuit arrangement comprising:

at least two power semiconductors connected in parallel with one another by a passive network, wherein the at least two power semiconductors are divided into a first group and a second group; and

a separate first driver of the first group, wherein the first driver is configured to switch on the first group prior to the second group being switched on,

wherein the passive network delays activation of the second group relative to the first group,

wherein a total semiconductor area of the first group is smaller than a total semiconductor area of the second group,

wherein the passive network comprises decoupling inductances, and

wherein at least one of the decoupling inductances is a physical component in a form of an inductor and distinct from an electrical connection line.

12 . The circuit arrangement according to claim 11 , wherein the delay of activation of the second group relative to the first group depends on an optimized operating point of the circuit arrangement.

13 . The circuit arrangement according to claim 11 ,

wherein at least one power semiconductor of the first group is configured to discharge parasitic capacitance discharge currents of at least one power semiconductor of the second group.