| 摘要 |
An inrush current suppressing device capable of stabilizing inrush current suppression control to improve the reliability and quality of the control. A current limiting element limits an input current flowing to a power supply circuit in accordance with an input current limit value. A current detecting section detects the input current flowing through the current limiting element and converts the current to a voltage signal, and a sloping voltage signal generating section generates a sloping voltage signal proportional to a time elapsed after the start of power supply. An input current limiting section compares the voltage signal with the sloping voltage signal, and outputs the input current limit value for suppressing the inrush current while gradually increasing the limit value with rise in the sloping voltage signal during a period in which the voltage signal is higher in level than the sloping voltage signal after the start of power supply.
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