Power supply control device
AssigneesAutonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
InventorYuuki SUGISAWA
Life of this patent
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Abstract
A power supply control device that includes a controller configured to switch on and off a first semiconductor switch and a plurality of second semiconductor switches whose current input terminals are connected to a current output terminal of the first semiconductor switch, the controller being configured to control supply of power via the plurality of second semiconductor switches by switching; a first parasitic diode connected between a current input terminal and the current output terminal of the first semiconductor switch; and a plurality of second parasitic diodes that are respectively connected between the current input terminals and current output terminals of the plurality of second semiconductor switches.
Claims4
A power supply control device comprising
- a controller configured to switch on and off a first semiconductor switch and a plurality of second semiconductor switches whose current input terminals are connected to a current output terminal of the first semiconductor switch, the controller being configured to control supply of power via the plurality of second semiconductor switches by switching;
- a first parasitic diode connected between a current input terminal and the current output terminal of the first semiconductor switch;
- and
- a plurality of second parasitic diodes that are respectively connected between the current input terminals and current output terminals of the plurality of second semiconductor switches,
- wherein a cathode of the first parasitic diode is connected to cathodes of the plurality of second parasitic diodes, and
- wherein the controller switches on the first semiconductor switch if the controller switches on at least one of the plurality of second semiconductor switches, and switches off the first semiconductor switch if the controller switches off all of the plurality of second semiconductor switches.
Dependencies are inferred from the claim text.