Electronic equipment equipped with switching power circuit and power supply control method
AssigneeOrion Electric Co., Ltd.
InventorKatsuhiko Tani
Life of this patent
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Abstract
To provide electronic equipment equipped with a switching power circuit which oscillates intermittently when an apparatus is OFF, where the apparatus is prevented from failing to start up upon power-on due to intermittent oscillation. A microcomputer 110 judges state of intermittent oscillation based on an oscillation on/off signal received from an oscillation monitoring circuit 17 and indicating the state of intermittent oscillation and starts to supply power to a load 120 according the state of intermittent oscillation rather than in quick response to closure of a power switch 2a.
Claims7
Electronic equipment equipped with a switching power circuit which oscillates intermittently when an apparatus is OFF, characterized in that the electronic equipment comprises an oscillation monitoring circuit for detecting on/off timing of oscillating operation of the switching power supply;
- and when the electronic equipment in a power-off state is powered on, power supply to a load is started with a predetermined timing according to state of the oscillating operation obtained from the oscillation monitoring circuit.
A power supply control method for electronic equipment equipped with a switching power circuit which oscillates intermittently when an apparatus is OFF, characterized by comprising the steps of:
- detecting on/off timing of oscillating operation of the switching power supply;
- and starting to supply power to a load during a period in which the oscillating operation of the switching power supply is ON after the electronic equipment in a power-off state is powered on.
Dependencies are inferred from the claim text.