Power supply control circuit and power supply control device
AssigneesAutonetworks Technologies, Ltd., Sumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd.
InventorShigeyuki Fujii
Life of this patent
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Abstract
Provided are: a power supply control circuit having a configuration in which an N-channel FET and a P-channel FET can appropriately and selectively be used so as to control power feeding with high efficiency and at low cost; and a power supply control device including the power supply control circuit. An N-channel FET (NchFET in the drawings) and a P-channel FET (PchFET in the drawings) are connected in parallel with each other between the positive voltage side (+B) of a battery (direct current power supply) and a plurality of ECUs (loads) 4, 4, . . . , so as to appropriately control ON and OFF.
Claims19
1-12. (canceled)
A power supply control circuit, comprising:
- a power supply side terminal connected to a direct current power supply;
- a load side terminal connected to one or more loads that is/are activated by power from the direct current power supply;
- a first FET (Field Effect Transistor) of a P type;
- a second FET of an N type;
- and
- a driving circuit for each of the first FET and the second FET, wherein
- the first FET and the second FET are connected in parallel with each other between the power supply side terminal and the load side terminal.
A power supply control device, comprising:
- a control part for controlling operation of one or more loads;
- and
- a power supply control circuit for controlling power feeding from a direct current power supply to the load, wherein
- the power supply control circuit comprises:
- a power supply side terminal connected to the direct current power supply;
- a load side terminal connected to said one or more loads;
- a first FET of a P type;
- a second FET of an N type;
- and
- a driving circuit for each of the first FET and the second FET, and wherein
- the first FET and the second FET are connected in parallel with each other between the power supply side terminal and the load side terminal, and
- the control part outputs a control signal for instructing ON or OFF to the driving circuit in accordance with an operation state of said one or more loads.
Dependencies are inferred from the claim text.