| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a DC/DC converter capable of controlling an input order of a plurality of power supplies. <P>SOLUTION: A switch control circuit 45 on-off controls a transistor TS pf a switch circuit 44 based on a comparative results of a first voltage V1 and a reference voltage Vr11 and an input notice signal ST, so that the first voltage V1 becomes higher than the reference voltage Vr11 and, after another apparatus is prepared for, the notice signal ST outputs a second voltage V2. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
