Patent ID: 7002399

Claim:
Basic stage for a charge pump circuit having at least an input terminal and an output terminal and comprising: at least a first inverter inserted between said input and output terminals and comprising a first complementary pair of transistors, defining a first internal node, at least a second inverter inserted between said input and output terminals and comprising a second complementary pair of transistors defining a second internal node, respective first and second capacitors connected to said first and second internal nodes and receiving first and second driving signals; said first and second pairs of transistors having their respective control terminals cross-connected to said second and first internal nodes, wherein the basic stage further comprises at least a first biasing structure connected to said first and second internal nodes and comprising first and second biasing transistors, which are respectively coupled to said first and second inverters, and which are operable to bias the inverters to enable generation of a negative output voltage on the output terminal, wherein said first and second biasing transistors and first transistors, of said first and second inverters are connected through a triple-well technology and have well terminals which are different from bulk terminals of these transistors.