Patent ID: 9543827
Date: 2017-01-10
CPC Classifications: H02M

Claim:
1. 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.