| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a DC-DC converter that generates a DC output voltage by operating a plurality of DC-DC conversion sections evenly. <P>SOLUTION: The DC-DC converter includes: the plurality of DC-DC conversion sections for converting a DC input voltage to rectangular wave voltages; a plurality of inductor elements having ends on one side connected to output terminals of the plurality of DC-DC conversion sections and ends on the other side connected to a common external output terminal; a plurality of duty detection circuits connected to the respective output terminals of the plurality of DC-DC conversion sections to detect duty ratios of the rectangular wave voltages output from the corresponding DC-DC conversion sections; and a duty adjustment circuit for comparing each set of two output signals of the plurality of duty detection circuits, and accordingly adjusting the duty ratio of the DC-DC conversion section connected to one of the set of duty detection circuits such that the duty ratios of the set of rectangular wave voltages become equal to each other. <P>COPYRIGHT: (C)2013,JPO&INPIT |
