Semiconductor device, power supply control method of semiconductor device, and sensor node
First Claim
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1. A semiconductor device, comprising:
- a current control unit whose conductance is variable; and
a control unit configured to control the conductance of the current control unit, wherein,the current control unit is connected to a direct current power source in parallel with a load for the direct current power source, through a capacitor,the control unit sets the current control unit to a first conductance when the direct current power source and the load are not in a conduction state,the control unit sets the current control unit to a second conductance larger than the first conductance when the direct current power source and the load are in the conduction state, andthe control unit changes control over the current control unit according to an electrical characteristic of the load.
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Abstract
A semiconductor device includes a current control unit whose conductance is variable and a control unit configured to control the conductance of the current control unit. The current control unit is connected to a direct current power source in parallel with a load for the direct current power source, through a capacitor. The control unit sets the current control unit to a first conductance when the direct current power source and the load are not in a conduction state, and sets the current control unit to a second conductance larger than the first conductance when the direct current power source and the load are in the conduction state.
6 Citations
20 Claims
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1. A semiconductor device, comprising:
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a current control unit whose conductance is variable; and a control unit configured to control the conductance of the current control unit, wherein, the current control unit is connected to a direct current power source in parallel with a load for the direct current power source, through a capacitor, the control unit sets the current control unit to a first conductance when the direct current power source and the load are not in a conduction state, the control unit sets the current control unit to a second conductance larger than the first conductance when the direct current power source and the load are in the conduction state, and the control unit changes control over the current control unit according to an electrical characteristic of the load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A semiconductor device, comprising:
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a current control unit whose conductance is variable; a control unit configured to control the conductance of the current control unit, wherein the current control unit is connected to a direct current power source in parallel with a load for the direct current power source, through a capacitor, the control unit sets the current control unit to a first conductance when the direct current power source and the load are not in a conduction state, and the control unit sets the current control unit to a second conductance larger than the first conductance when the direct current power source and the load are in the conduction state; and a plurality of the current control units respectively associated with a plurality of the capacitors disposed in parallel between the direct current power source and the load. - View Dependent Claims (16, 17)
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18. A power supply control method of a semiconductor device comprising a current control unit connected to a direct current power source in parallel with a load for the direct current source, through a capacitor, a conductance of the current control unit being variable, the power supply control method comprising:
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setting the current control unit to a first conductance, thereby starting charging of the capacitor; setting the current control unit to a second conductance larger than the first conductance when the direct current source and the load are conducted, thereby starting discharging of the capacitor, wherein, the semiconductor device includes; a plurality of the capacitors, and a plurality of the current control units respectively associated with the plurality of the capacitors, and the power supply control method includes; determining a number of the capacitors of the plurality of the capacitors to be charged according to the electrical characteristic of the load. - View Dependent Claims (19, 20)
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Specification