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US 10,254,781 B2Granted
Voltage source
AssigneeSTMicroelectronics (Alps) SAS
InventorKuno Lenz
Life of this patent
Estimating the term…
Abstract
A voltage source wherein at least one first switch couples a first node of the voltage source to a node of application of at least one potential of a power supply voltage, and at least one first capacitive element couples the first node or a second node of the voltage source to a control node of the first switch.
Claims18
A voltage source, comprising:
- a first switch including signal nodes coupled between a first output node and a node configured to receive a first power supply voltage, the first switch including a control node;
- a second switch including signal nodes coupled between the first output node and a second output node, the second switch including a control node;
- a first capacitive element coupled between the control node of the first switch and the second output node;
- a second capacitive element coupled between the control node of the second switch and the first output node;
- a current source coupled between the node configured to receive the first power supply voltage and the first output node, the current source including a node configured to receive a reference voltage and configured to provide a first current based on the reference voltage to the first output node.
2 more elements
A circuit, comprising:
- a first switch configured to couple a power supply voltage to a first output node in response to a voltage on a first control node;
- a second switch configured to couple a drive voltage to a second output node in response to a voltage on a second control node;
- a capacitive circuit coupled to the first and second control nodes and the first and second output nodes, the capacitive circuit configured to provide voltages on the first and second controls nodes to maintain a reference voltage across the first and second output nodes in response to changes in a voltage on the second output node;
- and
- a current source coupled between a node configured to receive the power supply voltage and the first output node, the current source including a node configured to receive a reference voltage and configured to provide a first current based on the reference voltage to the first output node.
2 more elements
A circuit, comprising:
- a current source coupled between a node configured to receive a power supply voltage and a first output node, the current source configured to receive a reference voltage and configured to provide a first current based on the reference voltage to the first output node;
- a resistive element coupled between the first output node and a second output node, the resistive element configured to receive a first reference current having a value based on the first current and a second current, and to generate the reference voltage across the first and second output nodes responsive to the first reference current;
- and
- at least one of a first switch coupled between the node configured to receive the power supply voltage and the first output node or a second switch coupled between the first output node and the second output node, the first switch including a first control node capacitively coupled to the second output node and the second switch including a second control node capacitively coupled to the first output node, and the at least one of the first and second switches configured to provide the second current through the at least one of the first and second switches in response to at least one of a first control signal and a second control signal on the first and second control nodes, respectively.
1 more element
Dependencies are inferred from the claim text.