Circuit with pulse width modulator for driving load has switch devices with semiconducting switches driven according to control signal, drive circuit providing frequency, duty cycle signals

摘要

The circuit has at least two switch arrangements (S1-S3) with connection terminals for connecting the load (L1-L3), at least one control terminal, at least one semiconducting switch (T1-T3) driven according to the control signal and at least one pulse width modulator arrangement (PWM1, PWM2) for providing a control signal depending on a frequency signal and a duty cycle signal provided by a drive circuit (MC1).