ELECTRONIC EQUIPMENT, CONTROL METHOD, AND PROGRAM

To cause power to be supplied from power supply of a system at a high priority level to a load, and to avoid that an excess voltage is supplied from the power supply to the load.SOLUTION: Electronic equipment (100) has: first voltage conversion means for converting a second supply voltage which is an output voltage of second power supply at a priority level lower than that of first power supply into a first voltage or a second voltage, and outputting the first voltage or the second voltage; second voltage conversion means for converting a first supply voltage which is an output voltage of the first power supply or an output voltage of the first voltage conversion means into a third voltage, and outputting the third voltage; and load means which operates with the third voltage, in which the first voltage conversion means converts the second supply voltage into the first voltage lower than the first supply voltage when the second power supply is connected with the second connection means, and after that, converts the second supply voltage into the second voltage when the second power supply is disconnected from the second connection means when the first power supply is connected with the first connection means.SELECTED DRAWING: Figure 1 【課題】 優先順位の高い系統の電源から負荷に電力が供給されるようにすると共に、その電源から負荷に過大な電圧が供給されてしまうことを回避する。【解決手段】 電子機器（１００）は、第１の電源よりも優先順位の低い第２の電源の出力電圧である第２の電源電圧を第１の電圧または第２の電圧に変換し、第１の電圧または第２の電圧を出力する第１の電圧変換手段と、第１の電源の出力電圧である第１の電源電圧または第１の電圧変換手段の出力電圧を第３の電圧に変換し、第３の電圧を出力する第２の電圧変換手段と、第３の電圧で動作する負荷手段とを有し、第１の電圧変換手段は、第１の電源が第１の接続手段に接続されている場合に、第２の電源が第２の接続手段に接続された場合には、第２の電源電圧を第１の電源電圧よりも低い第１の電圧に変換し、その後、第２の電源が第２の接続手段から切り離された場合には、第２の電源電圧を第２の電圧に変換する。【選択図】 図１