Patent ID: 9054577
Filing Date: 2015-06-09
Classification: G11C,H02M

Abstract:
1. A charge pump having at least one charge pump stage, each charge pump stage comprising: at least one NMOS device having a deep N-well (DNW), wherein a gate of the at least one NMOS device is capable of receiving a different signal from a drain of the at least one NMOS device; at least one capacitor coupled to the at least one NMOS device; a switch coupled between the at least one NMOS device and a ground, wherein a drain of the switch is coupled to a deep N-well of the switch; a first node coupled to the at least one NMOS device; and a second node coupled to the at least one NMOS device, wherein the first node is arranged to receive an input signal, the at least one capacitor is arranged to store electrical charges, the charge pump stage is configured to supply the electrical charges to the second node, and the DNW is arranged to be coupled to the ground for a negative pump operation.