Invention Grant
US07652522B2 High efficiency low cost bi-directional charge pump circuit for very low voltage applications 有权
高效率低成本双向电荷泵电路,用于极低电压应用

High efficiency low cost bi-directional charge pump circuit for very low voltage applications
Abstract:
A method and system for providing an output voltage greater than a voltage of a voltage supply in a semiconductor device are disclosed. The method and system include providing basic stage(s) and/or a bi-directional stage and basic stage(s) coupled with the bi-directional stage. The bi-directional stage includes boosting capacitors, N-type devices, and an interface and allows operation in positive or negative configurations. A first of the basic stage(s) is coupled with the interface. The basic stage includes first and second sections. The first section includes pumping node(s) coupled with pumping capacitor(s), device(s) coupled with the pumping node(s), and auxiliary capacitors for providing an overshoot for the device(s) for value(s) of the clock signals. The second section is analogous to the first section. A clock provides clock signals to the first and second sections and the bi-directional stage. The first and second sections alternately charge and fully discharge based on the clock signals.
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