Patent ID: 6552445
Filing Date: 2003-04-22
Classification: G06F,H02J,Y02D

Abstract:
An electronic apparatus for feeding electric power to loads in response to a plurality of action modes, said electronic apparatus comprising:an on/off controllable power source circuit providing electric power as its output through a node to said loads; a first switch circuit disposed on a power supply line extending from said node to a first load, said first load including a CPU; a second switch circuit disposed on a power supply line to a second load also extending from the node, said second switch circuit not including any elements of said first switch circuit, and said second load including a memory; and a control circuit providing an on/off control of said power source circuit, said first switch circuit and said second switch circuit in response to said plurality of action modes; wherein said first switch circuit has two FETs having the same characteristics, the drains and sources of said two FETs being commonly connected in parallel into an electric power source line, and the gates thereof being commonly connected to a corresponding output of said control circuit; and wherein said second switch circuit has an FET having the same characteristics as the FETs of said first switch circuit, the drain and source of said second switch circuit FET being connected to the electric power source line, and the gate thereof being connected to a corresponding output of said control circuit.