| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply unit that can significantly reduce inrush current during startup than that of a conventional one to suppress voltage fluctuations of a DC voltage. <P>SOLUTION: A switching operation control section 15 performing on-off control of a switching element in an AC/DC conversion section stops the on-off control of the switching element until an output voltage measurement value Vdc reaches a startup voltage, and performs a target voltage generation control that gradually raises a target output voltage value Vref to an output voltage set value using the number of steps obtained from a predetermined startup processing time divided by a predetermined update cycle time after the output voltage measurement value Vdc reached the startup voltage until it reaches the output voltage set value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
