Patent · US Active

VDD/5 or VDD/6 charge-pump

US8044707B2 · kind B2 · utility

9Cited by

5References

26Claims

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	Dec 13, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH02M3/072
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 having a value of ±⅙ Vdd, ±⅕ Vdd, ±¼ Vdd, ±⅓ Vdd, ±½ Vdd or ±1 Vdd 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 with a voltage or power, which is just enough e.g. for an audio signal to be correctly generated at the output of the amplifier.

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