Power supply device, apparatus, and control method

A power supply device comprising:

• a power supply that is mounted in an apparatus;
• a switch that is operated at the time of starting or stopping the apparatus;
• a conversion module including a plurality of conversion units configured to perform voltage conversion of power supplied by the power supply, the plurality of conversion units being electrically connected in parallel to each other;
• a selection unit that selects one of a plurality of patterns indicating a combination of the conversion units performing the voltage conversion for each operation number, which is the number of the conversion units performing the voltage conversion;
• a control unit that controls the conversion module such that the conversion unit indicated by the pattern selected by the selection unit performs the voltage conversion;
• and
• a change unit that changes the operation number, wherein:
• the selection unit operates when the operation for starting the apparatus is performed on the switch in a state where the apparatus is stopped, or when the operation for stopping the apparatus is performed on the switch in a state where the apparatus is operating, and the change unit operates when the apparatus is operating;
• and
• in the plurality of patterns, the combination of the conversion units performing the voltage conversion in at least one of the operation numbers is different.

A control method performed by a power supply device,

• the power supply device including:
• a power supply that is mounted in an apparatus;
• a switch that is operated at the time of starting or stopping the apparatus;
• a conversion module including a plurality of conversion units configured to perform voltage conversion of power supplied by the power supply, the plurality of conversion units being electrically connected in parallel to each other;
• a selection unit that selects one of a plurality of patterns indicating a combination of the conversion units performing the voltage conversion for each operation number, which is the number of the conversion units performing the voltage conversion;
• and
• a control unit that controls the conversion module such that the conversion unit indicated by the pattern selected by the selection unit performs the voltage conversion, wherein:
• in the plurality of patterns, the combination of the conversion units performing the voltage conversion in at least one of the operation numbers is different;
• and
• the selection unit changes the selected pattern with an operation on the switch.