Patent · US Expired

DC-DC converter and a regulation method for this DC-DC converter

US6711034B2 · kind B2 · utility

19Cited by

7References

13Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Thomas Duerbaum · Eschweiler, DE
Reinhold Elferich · Aachen, DE
Georg Sauerlaender · Aachen, DE

Key dates

Filing date	Sep 3, 2002
Grant date	Mar 23, 2004
Priority date	—
Expiry date	Sep 3, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02M7/4803
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A DC—DC converter includes an inverter and a primary-side circuit with a transformer whose secondary-side voltage is rectified by at least one rectifier for generating an output DC voltage. To avoid an asymmetrical load, which is in particular exhibited by a different load of the rectifier elements (power semiconductors), an electrical magnitude of the DC—DC converter is measured. This magnitude may be, for example, a primary-side current, a primary-side voltage at a capacitance, or a secondary-side, rectified voltage. A parameter for the symmetry deviation is calcuted from the measurement of the magnitude. A symmetry regulation arrangement utilizes the drive of the inverter, for example, the duty cycle of the pulse-width modulated voltage produced by the inverter to minimize the parameter for the symmetry deviation. This achieves an even distribution of the power over the secondary rectifier elements.

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