Patent · US Expired

Multi-phase DC-DC converter with shared control

US7298197B2 · kind B2 · utility

6Cited by

10References

9Claims

0Family size

Assignee

NXP B.V. · NL

Inventors

Thomas Duerbaum · Eschweiler, DE
Reinhold Elferich · Aachen, DE
Tobias Georg Tolle · Aachen, DE

Key dates

Filing date	Aug 5, 2004
Grant date	Nov 20, 2007
Priority date	—
Expiry date	Aug 5, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH02M3/1584
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An increasing number of phases in multiphase converters causes an increase in requirements with respect to the control IC. According to the present invention, instead of deriving a new PWM signal for every single phase of the DC-DC converter, the single phases are clustered into groups (22, 24, 26). Within each group, the converters are operated on the basis of one PWM signal (PW M1, PW M2 . . . PW MN). Advantageously, this may allow to reduce the requirements with respect to the control IC and thus may allow the application of cheaper and smaller control ICs.

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