Negative charge pump architecture with self-generated boosted phases

摘要

A negative charge pump circuit includes a cascade connection of a plurality of charge pump stages, each stage including at least a charge capacitance and a pass transistor driven by a corresponding phase signal. An input stage may be coupled to an input reference potential. An output stage may include an output terminal for generating a first pumped voltage. In addition, the charge pump circuit may further include a second output stage connected downstream to the input stage and including a second output terminal for generating a second pumped potential. The architecture may also be implemented in positive charge pump circuits.