Internal voltage generation circuits
AssigneeSK hynix Inc.
InventorYun Seok Hong
Life of this patent
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Abstract
An internal voltage generation circuit may include a pump controller and an internal voltage generator. The pump controller suitable for generating a first control signal enabled if a level of an internal voltage signal is lower than a target voltage level and a second control signal enabled if a level of the internal voltage signal is lower than the target voltage level after a predetermined period elapses from a point of time that the internal voltage signal is pumped. The internal voltage generator suitable for pumping the internal voltage signal with a first drivability in response to the first control signal and suitable for pumping the internal voltage signal with a second drivability in response to the second control signal.
Claims26
An internal voltage generation circuit comprising:
- a voltage sensor suitable for sensing a level of an internal voltage signal to generate an enablement signal which is enabled if a level of the internal voltage signal is lower than a target voltage level;
- a pulse detector suitable for generating a selection signal which is enabled if a level of the internal voltage signal is lower than the target voltage level after a predetermined period elapses from a point of time that the enablement signal is generated;
- and
- a control signal generator suitable for generating an oscillation signal including pulses that occur in response to the enablement signal and suitable for outputting the oscillation signal as a first or second control signal according to a level of the selection signal;
- and
- an internal voltage generator suitable for pumping the internal voltage signal with a first drivability in response to the first control signal and suitable for pumping the internal voltage signal with a second drivability in response to the second control signal.
An internal voltage generation circuit comprising:
- a pulse detector suitable for generating a selection signal which is enabled if a level of an internal voltage signal is lower than a target voltage level after a predetermined period elapses from a point of time that an enablement signal is generated;
- a control signal generator suitable for generating an oscillation signal including pulses that occur in response to the enablement signal and suitable for outputting the oscillation signal as a first control signal or a second control signal according to a level of the selection signal;
- a first pump suitable for pumping the internal voltage signal with a first drivability in response to the first control signal;
- and
- a second pump suitable for pumping the internal voltage signal with a second drivability in response to the second control signal,
- wherein the enablement signal is enabled if a level of the internal voltage signal is lower than the target voltage level.
Dependencies are inferred from the claim text.