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US 5,854,568 AGranted
Voltage boost circuit and operation thereof at low power supply voltages
AssigneeRamtron International Corporation
InventorGary Peter Moscaluk
Life of this patent
Estimating the term…
Abstract
A voltage boost circuit allows a reference input voltage to be boosted in a manner that is less sensitive to variations in power supply voltage levels, temperature, and semiconductor process used. A nominal boost voltage of approximately 1.5 volts is supplied, even at very low power supply voltages. A boost voltage less than 1.5 volts is supplied down to power supply voltages of approximately 1.8 volts.
Claims20
A voltage boost circuit comprising:
- a first input for receiving a voltage input signal;
- a second input for receiving a control signal;
- an output for providing a boosted input signal;
- a first transistor having a control node, and a current path coupled between the second input and the output;
- a second transistor having a control node coupled to the first input, and a current path coupled between the control node of the first transistor and the output;
- a third transistor having a control node coupled to the control node of the first transistor, and a current path coupled between the output and ground;
- and
- a fourth transistor having a control node coupled to the first input and a current path coupled between the control node of the first transistor and ground.
5 more elements
A voltage boost circuit comprising:
- an input for receiving a voltage input signal;
- an output for providing a boosted input signal;
- a first transistor having a control node, and a current path coupled between a source of power supply voltage and the output;
- a second transistor having a control node coupled to the input, and a current path coupled between the control node of the first transistor and the output;
- a third transistor having a control node coupled to the control node of the first transistor, and a current path coupled between the output and ground;
- and
- a fourth transistor having a control node coupled to the input and a current path coupled between the control node of the first transistor and ground.
4 more elements
A voltage boost circuit comprising:
- an input for receiving a voltage input signal;
- an output for providing a boosted input signal;
- a first transistor having a control node and a current path;
- a second transistor having a control node and a current path, wherein the control nodes of the first and second transistors are coupled together, and the current paths of the first and second transistors are coupled in series between the output and a source of supply voltage;
- a third transistor having a control node coupled to the input, and a current path coupled between the control node of the first transistor and the output;
- a fourth transistor having a control node coupled to the control node of the first transistor, and a current path coupled between the output and ground;
- and
- a fifth transistor having a control node coupled to the input and a current path coupled between the control node of the first transistor and ground.
5 more elements
Dependencies are inferred from the claim text.