Voltage regulator in semiconductor memory device
OwnerWook-Ghee Hahninventor
Life of this patent
Estimating the term…
Abstract
Provided is a voltage regulator. The voltage regulator includes a level down shifter reducing an applied high voltage, a voltage divider dividing the reduced high voltage to generate a first division result, a comparator comparing a reference voltage to the first division result, and a driver generating an output voltage based on the comparison result and providing the output voltage to the voltage divider. The voltage divider divides the output voltage to generate a second division result serving as a voltage control signal fed back to the level down shifter.
Claims20
A voltage regulator, comprising:
- a level down shifter reducing a high voltage;
- a voltage divider dividing the reduced high voltage to generate a first division result;
- a comparator comparing a reference voltage to the first division result to generate a comparison result;
- and
- a driver generating an output voltage based on the comparison result and providing the output voltage to the voltage divider,
- wherein the voltage divider divides the output voltage to generate a second division result, the second division result being fed back as a control voltage signal to the level down shifter.
A voltage regulator generating an output voltage at an output terminal, comprising:
- a level down shifter reducing a high voltage;
- a switch receiving the reduced high voltage and an enable signal;
- a first driver gated by an output of the switch to output the reduced high voltage;
- a second driver gated by the output of the first driver to output the reduced high voltage as the output voltage at the output terminal;
- a ripple eliminator connected between the output of the first driver and the output terminal;
- a voltage divider dividing the output voltage provided by the second driver to generate a first division result and a second division result;
- and
- a comparator comparing a reference voltage to the first division result to generate a comparison result, wherein the second driver generates the output voltage in relation to the comparison result voltage divider, and
- wherein the second division result is fed back as a control voltage signal to the level down shifter.
Dependencies are inferred from the claim text.