| 主权项 |
1. A switching power device comprising:
a main circuit that includes a switching element and a coil, and adjusts a current flowing through the coil and outputs a voltage in response to a change in a driving signal; an output voltage detection circuit that outputs a first voltage corresponding to the voltage outputted from the main circuit; an error amplification circuit that outputs an error signal in response to a difference between the first voltage of the output voltage detection circuit and a second voltage corresponding to a control target voltage of the main circuit; an oscillation circuit that outputs an oscillation signal; a driving circuit that outputs the driving signal to the switching element in response to a comparison result obtained by comparing the oscillation signal of the oscillation circuit and the error signal of the error amplification circuit; and a soft-start control unit that controls the second voltage, which is provided to the error amplification circuit, to be a restart voltage between a control standard voltage, which corresponds to a target output voltage of the main circuit, and a control start voltage of the main circuit in response to the first voltage of the output voltage detection circuit when the first voltage of the output voltage detection circuit reaches a soft-start threshold voltage between a standard detection voltage and a start detection voltage. |
