Patent ID: 8067977

Claim:
An active charge pump circuit, comprising: a charge pump circuit configured to generate a charge pumping voltage in response to an active enable signal; a control circuit configured to generate a charge transfer control signal in response to the active enable signal, the charge transfer control signal having a voltage between a ground voltage and a boosted power supply voltage, the control circuit including, a first charge pump unit connected between a first node and a second node, the first charge pump unit being configured to boost a voltage of the second node based on the active enable signal, and a second charge pump unit connected between the first node and a third node, the second charge pump unit being configured to boost a voltage of the third node based on the active enable signal, the charge transfer control signal being based on at least one of the boosted voltages of the second and third nodes; and a charge transfer circuit configured to output the charge pumping voltage as an active voltage in response to the charge transfer control signal.