| 摘要 |
A power supply apparatus includes a plurality of power supply circuits, switches connected to the power supply circuits, a common soft start circuit and an individual soft start circuit commonly connected to the plurality of power supply circuits via the switches. The power supply circuits are commonly connected to the common soft start circuit at power-on or power-off so as to perform common soft start by the common soft start circuit. When a voltage from any of the plurality of power supply circuits is caused to make a transition individually, the associated power supply circuit is connected to the individual soft start circuit so as to perform soft start by the individual soft start circuit.
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