Internal voltage generator
AssigneeHynix Semiconductor Inc.
InventorYong-Kyu Kim
Life of this patent
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Abstract
Provided is an internal voltage generator for preventing an occurrence of leakage current while a charge pumping is not performed. The internal voltage generator includes: a charge pumping unit for pumping an external voltage to generate a high voltage higher than the external voltage; a level detecting unit for detecting a level drop of the high voltage with respect to a reference voltage and outputting a detection signal; an oscillating unit for generating an oscillation signal in response to the detection signal; a pumping control signal generating unit for controlling a driving of the charge pumping unit in response to the oscillation signal; and a charge pump controlling unit for precharging the charge pumping unit in response to the detection signal.
Claims9
An internal voltage generator comprising:
- a charge pumping unit for pumping an external voltage to generate a high voltage higher than the external voltage;
- a level detecting unit for detecting a level drop of the high voltage with respect to a reference voltage and outputting a detection signal;
- an oscillating unit for generating an oscillation signal in response to the detection signal;
- a pumping control signal generating unit for controlling a driving of the charge pumping unit in response to the oscillation signal;
- and
- a charge pump controlling unit for precharging the charge pumping unit in response to the detection signal.
Dependencies are inferred from the claim text.