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US 2007/0183246 A1Published application
Internal voltage generation circuit of semiconductor memory device
AssigneeHynix Semiconductor Inc.
InventorSang Byeon
Life of this patent
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Abstract
An internal voltage generation circuit of a semiconductor memory device controls a dead zone voltage, in which the driving unit that supplies a power supply voltage, does not need to operate. An internal voltage having a dead zone is determined by first and second driving signals based on a level of a reference voltage, and by selectively supplying first and second voltages by means of the first and second driving signals.
Claims25
An internal voltage generation circuit for a semiconductor device comprising:
- a driving signal generation unit that generates first and second driving signals, having corresponding voltage levels based on a reference voltage having a target level between a first voltage level and a second voltage level;
- a driving control unit, operatively coupled to the driving signal generation unit and which controls voltage levels of the first and second driving signals based on a control signal in order to control a dead zone voltage;
- and
- a driving unit that outputs an internal voltage, for use by a semiconductor device, the internal voltage for use by a semiconductor device being determined by driving the first and second voltages, using the first and second driving signals, wherein the dead zone voltage of the internal voltage is changed as the driving control unit controls the first and second driving signals.
1 more element
An internal voltage generation circuit comprising:
- a driving control unit for generating first and second driving signals to form a first dead zone, and third and fourth driving signals to form a second dead zone, based on a reference voltage having a target level between a first voltage and a second voltage, and selecting either one pair of the first and second driving signals or one pair of the third and fourth driving signals based on a control signal to control a dead zone;
- and
- a driving unit for driving the first and second voltage based on signals selected by the driving control unit, and outputting an internal voltage having a dead zone determined based on the signals selected by the driving control unit.
Dependencies are inferred from the claim text.