Patent ID: 11955953
Assignee: ROBERT BOSCH GMBH
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A control circuit (2) for a semiconductor switch (3) comprising:
a capacitive component (11, 11a, 11b);
an integrator (12, 12b) configured to integrate a charging current into the capacitive component (11, 11a, 11b) in order to determine a quantity of charge (Q) in the capacitive component (11, 11a, 11b) from the integrated charging current;
a comparison device (13) configured to control the semiconductor switch (3) when the determined quantity of charge (Q) in the capacitive component (11, 11a, 11b) exceeds a preset limit value (S);
a logic gate (14) for linking the result of the comparison device (13) and a control signal (D); and
a driver circuit (20) configured to receive the control signal (D) for the semiconductor switch (3) and to control a gate (32) of the semiconductor switch (3) using the received control signal (D);
wherein the driver circuit (20) is electrically coupled to a protection device (1), and the driver circuit (20) is configured to control the semiconductor switch (3) at least partially when the quantity of charge (Q) in the capacitive component (11, 11a, 11b) determined by the protection device (1) exceeds the preset limit value (S), and
wherein the capacitive component (11, 11a, 11b) is arranged between an input terminal (31) of the semiconductor switch (3) and the integrator (12, 12b).