1. A lighting control system for generating supply currents for a first LED channel and at least a second LED channel, the system comprisinga first controlled current source for generating a first supply current for the first LED channel based on a first control signal;
a second controlled current source for generating a second supply current for the second LED channel based on a second control signal;
a first signal combiner for generating the first control signal based on a synchronization signal that comprises periodic starting pulses and on a combination of a first magnitude dimming signal and a first pulse dimming signal; and
a second signal combiner for generating the second control signal based on the synchronization signal and on a combination of a second magnitude dimming signal and a second pulse dimming signal; wherein
the first and the second signal combiner are designed such that changes of the respective first and second control signals come into effect only with a respective time offset with respect to one of the starting pulses of the synchronization signal.