Patent ID: 8963623
Filing Date: 2015-02-24
Classification: H02M,Y10T

Abstract:
1. A charge pump circuit, comprising: a plurality of diode devices coupled in series, such that a first diode device is coupled to a second diode device; a transistor, having a source coupled to a voltage source configured to provide a supply voltage, and a drain coupled to the first diode device; a first voltage multiplier circuit having an output coupled to a gate of the transistor, wherein the first voltage multiplier circuit is configured to generate a first two-phase output signal having a voltage value equal to zero during a first clock phase and a voltage value equal to twice the supply voltage during a second subsequent clock phase; and a second voltage multiplier circuit configured to generate a second two-phase output signal having a maximum value in alternating clock phases that is greater than the supply voltage, comprising a first input coupled to an output of a first inverter configured to provide a first input signal equal to an inverted version of an input clock signal and a second input coupled to an output of the first voltage multiplier circuit and configured to receive the first two-phase output signal.