DC/DC CONVERTER AND GAME MACHINE USING IT

摘要

The present disclosure is to provide a DC/DC converter capable of suppressing increase in the ripple amount of the output voltage in association with switching of the number of drive phases. N (N is an integer equal to or larger than 2) switching circuits each generate a switching voltage at the switching node according to an input pulse signal. A phase controller dynamically switches the number K (K is an integer equal to or smaller than N) of drive phases according to the state of a DC/DC converter at the time. A pulse modulator generates a pulse signal whose frequency changes according to the number K of drive phases. A distributor selects K switching circuits among the N switching circuits and distributes the pulse signal to each of the selected K switching circuits with a phase difference of (360/K) degrees.