Patent · US Active

Resonant DC/DC converter with zero current switching

US7948774B2 · kind B2 · utility

3Cited by

6References

17Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Thomas Scheel · Stolberg, DE
Peter Luerkens · Aachen, DE
Christoph Loef · Aachen, DE

Key dates

Filing date	Apr 13, 2006
Grant date	May 24, 2011
Priority date	—
Expiry date	Aug 28, 2027

Classification

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

Abstract

A resonant DC/DC converter for supplying an output power comprises a switching device (18) for supplying a switched voltage (UWR) to a resonant circuit (20) having a transformer (T). The switched voltage (UWR) is derived from an intermediate circuit voltage (Uz) having a fixed pulse width and frequency so that the zero crossings of the resonant current (Ires) generated in the resonant current are defined. The switching configuration of an inverter circuit (18) is selected by a control device (31) to either increase, decrease or maintain at a substantially constant level the resonant current according to the polarity of the switched voltage, so as to control the output power as required.

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