Patent ID: 7166976

Claim:
A control circuit for triggering an electric motor via a pulse width modulation signal, comprising: a switching device via which the electric motor is connectable to a supply voltage, the switching device being controllable by way of the pulse width modulation signal; and a control module for generating the pulse width modulation signal for triggering the switching device, wherein: the pulse width modulation signal has, in one clock cycle, at least one signal edge between a first signal level and a second signal level, the control module generates the at least one signal edge in such a way that the at least one signal edge has a first segment having a first edge slope and a second segment having a second edge slope, an absolute value of the first edge slope is less than an absolute value of the second edge slope; the control module includes a pulse signal generator in order to generate a first pulse signal and a second, time-offset pulse signal; and an edge generator circuit produces the first segment via the first pulse signal and the second segment via the second, time-offset pulse signal.