(19)

(11)

EP 2 206 229 A1

(12)

(43) Date of publication: 14.07.2010 Bulletin 2010/28 (21) Application number: 07820653.9 (22) Date of filing: 27.09.2007

(51) International Patent Classification (IPC):  H02M 3/337(2006.01) H02M 1/32(2007.01) (86) International application number: PCT/EP2007/060265 (87) International publication number: WO 2009/039887 (02.04.2009 Gazette 2009/14)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (71) Applicant: voltwerk electronics GmbH 20537 Hamburg (DE)	(72) Inventor: LENZ, Thomas 61352 Bad Homburg (DE) (74) Representative: Birken, Lars et al Eisenführ Speiser Johannes-Brahms-Platz 1 20355 Hamburg 20355 Hamburg (DE)