Patent ID: 8427229

Claim:
An integrated circuit comprising: a load circuit; a bi-directional charge pump being electrically connected to the load circuit, the bi-directional charge pump having an input circuit and output circuit, and one or more pump stages coupled between the input circuit and the output circuit of the bi-directional charge pump, wherein the output circuit includes a diode having an input and output and a transistor being connected to the output of the diode and a ground potential; and one or more output switches that include a second diode having an input and an output and a second transistor connected to the output of the second diode and to the ground potential, wherein the input of the diode is electrically connected to the pump stages, the input of the second diode is electrically connected to an output of any intermediate pump stages, a positive voltage at the output of the intermediate pump stages is input at the input of the second diode, and the positive voltage switches on the second diode, which discharges the positive voltage through the second transistor to ground potential and provides a second positive pump (P-pump) that is located between the second diode and the second transistor.