Patent · US Expired

Step-up converter having power factor correction

US7116084B2 · kind B2 · utility

1Cited by

4References

6Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Alois Braun · Neubukow, DE
Walter Limmer · Birkenfeld, DE
Joachim Mühlschlegel · Drolshagen, DE

Key dates

Filing date	Sep 30, 2004
Grant date	Oct 3, 2006
Priority date	—
Expiry date	Oct 27, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B70/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A step-up converter has a power factor correction, has an input for connection to a supply voltage, in particular a rectified AC voltage; an inductor, a diode and a storage capacitor, which are coupled in a series arrangement between the input and the output, in which the voltage that is dropped across the storage capacitor is provided at the output; a switch, which is coupled between a junction point between the inductor and the diode, on the one hand, and a reference potential, on the other hand; and a drive circuit for the switch which controls the times for which the switch remains closed and open; the drive circuit being designed to control the time for which the switch remains closed as a function of the freewheeling time of the inductor. A method for operating such a step-up converter is also disclosed.

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