Patent · US Active

System and method for a switched-mode power supply

US9699848B2 · kind B2 · utility

4Cited by

1References

27Claims

0Family size

Assignee

Infineon Technologies Austria AG · AT

Inventors

Michael Herfurth · Gilching, DE
Gong Xiaowu · Singapore, SG

Key dates

Filing date	Dec 17, 2014
Grant date	Jul 4, 2017
Priority date	—
Expiry date	Dec 17, 2034

Classification

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

Abstract

In accordance with an embodiment, a method of operating a switched-mode power supply includes controlling a first switch coupled between an inductor and a reference node. Controlling includes modulating a first switching signal to control a first current through the first switch to a first predetermined current, and attenuating a current supplied by the first switch to the inductor in accordance with an attenuation factor to form an attenuated current. Attenuating includes providing a pulse modulated signal to a second switch coupled between the first switch and the inductor, where the attenuation factor is related to a pulse density of the pulse modulated signal.

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