Patent ID: 6819162
Filing Date: 2004-11-16
Classification: H02M

Abstract:
A charge pump for negative voltages, comprising:a voltage-boosting stage that includes: a high-voltage terminal and a low-voltage terminal; a first branch and a second branch, which are symmetrical and are connected between said high-voltage terminal and said low-voltage terminal and each of which includes a respective first transistor and a respective second transistor; wherein said first and second transistors are all triple-well MOS transistors of one and the same polarity type, wherein said first transistors of said first branch and said second branch have first conduction terminals connected to said high-voltage terminal and second conduction terminals connected, respectively, to a first charge-transfer node and a second charge-transfer node, wherein said first transistors of said first branch and said second branch have control terminals connected to said respective second conduction terminals of said first transistor.