Current Control Circuits
First Claim
1. A current control circuit comprising:
- a first MOS transistor having a first source/drain coupled to an output of a power source, and a second source/drain of the first MOS transistor coupled to a first output node of the current control circuit;
a second MOS transistor having a first source/drain coupled to the output of the power source, a second source/drain of the second MOS transistor coupled to a second output node of the current control circuit; and
means for blocking flow of current from the first output node of the current control circuit to the second output node of the current control circuit when a potential at the first output node is higher than a potential at the output of the power source.
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Accused Products
Abstract
Circuit, system and method of current control circuits are disclosed. In one embodiment, a control circuit includes a first MOS transistor and a second MOS transistor. The first source/drains of the first and the second MOS transistors are coupled to an output of a power source. A second source/drain of the first MOS transistor is coupled to a first output node of the current control circuit. A second source/drain of the second MOS transistor is coupled to a second output node of the current control circuit. The control circuit further includes a means to block flow of current from the first output node of the current control circuit to the second output node of the current control circuit.
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Citations
31 Claims
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1. A current control circuit comprising:
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a first MOS transistor having a first source/drain coupled to an output of a power source, and a second source/drain of the first MOS transistor coupled to a first output node of the current control circuit; a second MOS transistor having a first source/drain coupled to the output of the power source, a second source/drain of the second MOS transistor coupled to a second output node of the current control circuit; and means for blocking flow of current from the first output node of the current control circuit to the second output node of the current control circuit when a potential at the first output node is higher than a potential at the output of the power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of operating a control circuit from inverse current, the method comprising:
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providing a control circuit comprising a power transistor and a sense transistor, wherein a first source/drain of the power transistor is coupled to an output node of a power source, wherein a second source/drain of the power transistor is coupled to an first output node of the control circuit, the first output node being configured to be coupled to a load, wherein a first source/drain of the sense transistor is coupled to the output of the power source, wherein a second source/drain of the second MOS transistor is coupled to a second output of the control circuit, and wherein the second output of the control circuit is configured to be coupled to a sense resistor; and blocking current flow from the first output node of the control circuit to the second output of the control circuit when a potential at the first output of the control circuit is larger than a potential at the output of the power source. - View Dependent Claims (23, 24, 25, 26)
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27. A current control circuit comprising:
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a first MOS transistor having a first source/drain coupled to an output of a power source, and a second source/drain coupled to a first output node of the current control circuit; a second MOS transistor having a first source/drain coupled to the output of the power source, and a second source/drain coupled to a second output node of the current control circuit; a comparator, a first input of the comparator coupled to the output of the power source, a second input of the comparator coupled to the first output node of the current control circuit; and a switch coupled to an output of the comparator. - View Dependent Claims (28)
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29. A current control circuit comprising:
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a first MOS transistor having a first source/drain coupled to an output of a power source, and a second source/drain coupled to a first output node of the current control circuit; a second MOS transistor having a first source/drain coupled to the output of the power source, and a second source/drain coupled to a second output node of the current control circuit; and a first blocking diode, wherein the second source/drain of the second MOS transistor is coupled to an input of the first blocking diode, wherein an output of the first blocking diode is coupled to a second output node of the control circuit. - View Dependent Claims (30, 31)
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Specification