Patent ID: 9529418
Filing Date: 2016-12-27
CPC Classification: G06F,H02J,H02M,Y02B,Y04S

Claim Text:
1. A power supply control device for controlling a power supply comprising a main power supply for supplying power to a load circuit and a standby power supply, said load circuit being capable of mutually switching between a first state in which electric power needs to be supplied from said main power supply and a second state in which electric power does not need to be supplied from said main power supply, said power supply control device comprising: a determination unit for determining a change of a state of said load circuit between said first state and said second state; and a control unit for causing said main power supply to stop when said determination unit determines that said first state is changed to said second state, wherein the standby power supply has a node to which an output end of an output voltage of the standby power supply, a power storage device and the power supply control device are connected in common, the power supply control device receives electric power from the node, the power storage device supplies electric power to the node, and the control unit controls starting and stopping of the standby power supply in accordance with a comparison result of the output voltage of the standby power supply with a reference voltage, and thereby, the control unit intermittently starts up the power supply in order to resupply the electric power to the power storage device.