| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power-supply circuit capable of suitably setting decoupling capacitance depending on a step-up circuit or a load receiving a step-up voltage. <P>SOLUTION: Each of a plurality of switching circuits 8-1 to 8-n is connected to one of a plurality of decoupling capacitive elements 7-1 to 7-n. Each of the plurality of switching circuits 8-1 to 8-n connects or disconnects between one decoupling capacitive element to be connected and a step-up circuit 6. A control unit 10 selects at least one decoupling capacitive element from among the plurality of decoupling capacitive elements and controls the plurality of switching circuits 8-1 to 8-n so as to connect the step-up circuit 6 and the selected decoupling capacitive element. <P>COPYRIGHT: (C)2013,JPO&INPIT |
