System for providing a control signal, the system comprising: an over-current control, a time clock, which is adapted to provide a periodical time signal, a clock generator unit comprising a first and a second input terminal and an output terminal, wherein the first input terminal is coupled to the time clock and the output terminal is coupled to the over-current control, the clock generator unit being adapted to receive the periodical time signal at the first input terminal and to receive a modification signal at the second input terminal, wherein the clock generator unit is adapted to generate a clock signal on the basis of the periodical time signal and the modification signal, and wherein the clock generator unit is further adapted to provide at its out-put terminal, the clock signal to the over-current control wherein the over-current control is adapted to provide a control signal on the basis of the clock signal and wherein the system further comprises an output driver coupled to the over-current control for providing current pulses to a load on the basis of the control signal, characterized in that the system further comprises a pulse width modulation controller coupled to an input terminal of the output driver and being adapted to provide signal-pulses with a certain duty cycle to the output driver, wherein the clock generator unit comprises an AND-Gate having a first input, a second input and an output, where the first input is connected to the time clock and the second input is connected to the pulse width modulation controller; and the output is connected to the over-current control, said AND-Gate being adapted to provide an outgoing signal combining the signals received by the first and the second input in order to synchronise the periodical time signal of the time clock with the signal-pulses of the pulse width modulation controller. an over-current control, a time clock, which is adapted to provide a periodical time signal, a clock generator unit comprising a first and a second input terminal and an output terminal, wherein the first input terminal is coupled to the time clock and the output terminal is coupled to the over-current control, the clock generator unit being adapted to receive the periodical time signal at the first input terminal and to receive a modification signal at the second input terminal, wherein the clock generator unit is adapted to generate a clock signal on the basis of the periodical time signal and the modification signal, and wherein the clock generator unit is further adapted to provide at its out-put terminal, the clock signal to the over-current control wherein the over-current control is adapted to provide a control signal on the basis of the clock signal and wherein the system further comprises an output driver coupled to the over-current control for providing current pulses to a load on the basis of the control signal, characterized in that the system further comprises a pulse width modulation controller coupled to an input terminal of the output driver and being adapted to provide signal-pulses with a certain duty cycle to the output driver, wherein the clock generator unit comprises an AND-Gate having a first input, a second input and an output, where the first input is connected to the time clock and the second input is connected to the pulse width modulation controller; and the output is connected to the over-current control, said AND-Gate being adapted to provide an outgoing signal combining the signals received by the first and the second input in order to synchronise the periodical time signal of the time clock with the signal-pulses of the pulse width modulation controller.