Power supply device, control device for power supply circuit, and program

A control device for a power supply circuit including a battery to supply power to a load via a power line, a switch on the power line and switchable between an ON state and an OFF state, a power conversion circuit on the power line, and a voltage detector to detect an output voltage to be output to the load, the control device comprising:

• a differential processor configured or programmed to output a differential value corresponding to the output voltage;
• an integral processor configured or programmed to output an integral value obtained by integrating the differential value output from the differential processor over a unit time interval;
• and
• a switch control processor configured or programmed to change the switch to the OFF state;
• wherein
• the differential processor is configured or programmed to output the differential value that is obtained by differentiating a difference between the output voltage and the integral value;
• and
• the switch control processor is configured or programmed to change the switch to the OFF state when the differential value reaches a threshold.

A non-transitory computer-readable medium including a program for a power supply device including a battery to supply power to a load via a power line, a switch on the power line and switchable between an ON state and an OFF state, a power conversion circuit on the power line, a voltage detector to detect an output voltage to be output to the load, and a controller to control the switch, the program causing the controller to perform:

• differential processing of outputting a differential value corresponding to the output voltage;
• integral processing of outputting an integral value obtained by integrating the differential value output by the differential processing over a unit time interval;
• and
• a switch control process of switching the switch to the OFF state when the differential value reaches a threshold;
• wherein
• the differential processing outputs the differential value obtained by differentiating a difference between the output voltage and the integral value.