| 摘要 |
According to one embodiment, a power supply control device controls a switching power supply circuit by a pulse width modulation signal. The power supply control device includes a memory which stores a control program including a plurality of instructions for executing a procedure of a power supply control process which controls a duty ratio of the pulse width modulation signal based on an output voltage value of the switching power supply circuit and a target voltage value, a total execution time of the plurality of instructions included in the control program agreeing with a period of the pulse width modulation signal, and a processing unit which executes the power supply control process for each period of the pulse width modulation signal by repeatedly executing the plurality of instructions included in the control program without interruption.
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