Patent ID: 8604643

Claim:
A control device for a plurality of switching converters, the control device comprising: a comparator circuit configured to compare a signal representative of a load of the plurality of switching converters with a plurality of reference signals and to enable or disable at least one of said plurality of switching converters in response to the comparison, the comparator circuit including: a plurality of comparators with hysteresis, each comparator having a first input terminal configured to receive the signal representative of the load of the plurality of switching converters and a second input terminal configured to receive a reference signal of the plurality of reference signals, each of the comparators configured to disable a corresponding switching converter of the plurality of converters if the representative signal of the load of the plurality of switching converters is less than the corresponding reference signal and to enable the corresponding switching converter if the signal representative of the load of the plurality of switching converters is the same as or greater than a total value given by the corresponding reference signal and the hysteresis; and a multivibrator circuit coupled to the plurality of comparators and configured to deactivate each comparator for a period of time after switching.