Patent · US Active

Reduced capacitor charge-pump

US8044706B2 · kind B2 · utility

16Cited by

11References

28Claims

0Family size

Assignee

DIALOG SEMICONDUCTOR INC. · DE

Inventors

Hynek Saman · Beroun, CZ
Jim Brown · Los Gatos, US

Key dates

Filing date	Oct 16, 2009
Grant date	Oct 25, 2011
Priority date	—
Expiry date	Oct 28, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH02M3/071
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Systems and methods to achieve a charge pump for generating from single supply voltage energy efficient supply voltages that are symmetrical around ground voltage have been disclosed. The charge pump requires two flying capacitors only. The charge pump generates positive and negative supply voltages following a 1/N ratio of Vdd voltage, i.e. +−Vdd/N, and can be generalized to generate +/−Vdd/2N voltages. This is especially useful for supplying class-G amplifiers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.