Charge pump circuit and charge pump device

Abstract

A charge pump circuit includes a first pump unit and a second pump unit. The first pump unit generates a pumped voltage according to an input voltage, a first clock signal, and a second clock signal. The first clock signal and the second clock signal are in phase, and the second clock signal has a higher swing than that of the first clock signal. The second pump unit has a structure similar to that of the first pump unit, and the first and the second pump units alternatively output a pumped voltage according to the input voltage. Transistors in the first pump unit and the second pump unit are operating within their safe operating area (SOA) and are disposed in two wells that are biased independently.

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