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US 7,352,626 B1Granted
Voltage regulator with less overshoot and faster settling time
AssigneeSpansion LLC
InventorsYonggang Wu, Guowei Wang, Nian Yang, Aaron Lee
Life of this patent
Estimating the term…
Abstract
A voltage regulator may include an operational-amplifier section, a capacitor connected to an output of the operational-amplifier section, and a switch configured to connect the capacitor to a voltage supply. The switch is configured to charge the capacitor before activating the operational-amplifier section. The capacitor is configured to store charge to supplement current being supplied from the operational-amplifier section. The voltage regulator may be used to supply power to non-volatile memory cells.
Claims14
A memory device comprising:
- at least one array of non-volatile memory cells, each of the non-volatile memory cells being associated with at least one bit line and a word line;
- and
- a voltage supply component configured to supply power to the at least one array of non-volatile memory cells, the voltage supply component including a voltage regulator that includes:
- an operational-amplifier section,
- a capacitor connected to an output of the operational-amplifier section, and
- a switch configured to connect the capacitor and the output of the operational-amplifier section to a voltage supply, the switch being operated to pre-charge the capacitor, the pre-charged capacitor operating to stabilize the power supplied from the voltage supply component.
3 more elements
A non-volatile memory device comprising:
- an array of non-volatile memory cells, each of the non-volatile memory cells being associated with at least one bit line and a word line;
- and
- a voltage regulator that includes:
- a two-stage operational-amplifier section, the two-stage operational-amplifier section including a first operational-amplifier configured as a differential operational-amplifier, and a second operational-amplifier configured as a unity gain operational amplifier and including an input connected to an output of the first operation-amplifier and an output connected as an output of the two-stage operational-amplifier section,
- a capacitor connected to an output of the two-stage operational-amplifier section, and
- a switch configured to connect the capacitor and the output of the two-stage operational-amplifier section to a voltage supply, the switch being operated to charge the capacitor before activating the two-stage operational-amplifier section.
3 more elements
Dependencies are inferred from the claim text.