| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply device suitable for a parallel operation. <P>SOLUTION: A cyclic signal corresponding to an output signal of an oscillation circuit is conveyed to a pulse generation circuit via a first signal transmission path and to a first external terminal via a second signal transmission path. The cyclic signal input from the first external terminal is conveyed to the pulse generation circuit via a third signal transmission path. A PWM cycle of a switching power supply circuit is set by a timing signal produced by the pulse generation circuit. A power supply device has a first mode that conveys the cyclic signal corresponding to the output signal of the oscillation circuit via the first signal transmission path and the second signal transmission path and a second mode that conveys the cyclic signal input from the first external terminal via the third signal transmission path. <P>COPYRIGHT: (C)2012,JPO&INPIT |
