Patent ID: 6724242
Filing Date: 2004-04-20
Classification: H02M,Y02B

Abstract:
A pump circuit for an integrated circuit comprising:a standby mode voltage detector that is configured to detect a high voltage in a standby mode to generate a standby mode voltage signal; an active mode voltage detector that is configured to detect the high voltage in an active mode to generate an active mode voltage signal; an active pump signal generator that is configured to generate an active pump signal in response to the active mode voltage signal and an active mode signal; a first oscillator that is enabled in response to the standby mode voltage signal; a second oscillator that is enabled in response to the active pump signal; a high voltage pump signal generator that is configured to receive an output of the first oscillator and an output of the second oscillator and to generate a high voltage pump signal in response to the active mode signal; a high voltage pulse signal generator that is configured to generate a high voltage pulse signal in response to the active pump signal; a first pump that is configured to generate the high voltage in response to the high voltage pump signal and the high voltage pulse signal; and a second pump that is configured to generate the high voltage in response to the active pump signal.