Patent ID: 7382176
Filing Date: 2008-06-03
Classification: H02M

Abstract:
1. A charge pump circuit comprising: a voltage increasing stage, wherein the voltage increasing stage comprises at least one charge pump section; a voltage decreasing stage in parallel with the voltage increasing stage, wherein the voltage decreasing stage comprises at least one charge pump section; and a shared input to the voltage increasing and voltage decreasing stages, wherein the at least one charge pump section of the voltage increasing stage and the at least one charge pump section of the voltage decreasing stage each comprises a first input switch and output switch in series connected together at a first junction node, and a second input switch connected between the input and a second junction node, a first charge pump capacitor connected between the first junction node and a first control line and a second charge pump capacitor connected between the second junction node and a second control line, wherein the second junction node provides control signals for the first input and output switches.