WO200282625-A2  PATENT ABSTRACTS OF JAPAN vol. 2000, no. 11, 3. Januar 2001 (2001-01-03) & JP 2000 236660 A (TOYOTA AUTOM LOOM WORKS LTD), 29. August 2000 (2000-08-29);  VILATHGAMUWA M ET AL: "EMI SUPPRESSION WITH SWITCHING FREQUENCY MODULATED DC-DC CONVERTERS" IEEE INDUSTRY APPLICATIONS MAGAZINE, IEEE CENTER, US, Bd. 5, Nr. 6, November 1999 (1999-11), Seiten 27-33, XP000935947 ISSN: 1077-2618;  SIMONETTI D S L ET AL: "Control conditions to improve conducted EMI by switching frequency modulation of basic discontinuous PWM preregulators" POWER ELECTRONICS SPECIALISTS CONFERENCE, PESC '94 RECORD., 25TH ANNUAL IEEE TAIPEI, TAIWAN 20-25 JUNE 1994, NEW YORK, NY, USA,IEEE, 20. Juni 1994 (1994-06-20), Seiten 1180-1187, XP010121366 ISBN: 0-7803-1859-5EP1378048-B1  PATENT ABSTRACTS OF JAPAN vol. 2000, no. 11, 3. Januar 2001 (2001-01-03) & JP 2000 236660 A (TOYOTA AUTOM LOOM WORKS LTD), 29. August 2000 (2000-08-29);  SIMONETTI D S L ET AL: "Control conditions to improve conducted EMI by switching frequency modulation of basic discontinuous PWM preregulators" POWER ELECTRONICS SPECIALISTS CONFERENCE, PESC '94 RECORD., 25TH ANNUAL IEEE TAIPEI, TAIWAN 20-25 JUNE 1994, NEW YORK, NY, USA,IEEE, 20. Juni 1994 (1994-06-20), Seiten 1180-1187, XP010121366 ISBN: 0-7803-1859-5;  VILATHGAMUWA M ET AL: "EMI SUPPRESSION WITH SWITCHING FREQUENCY MODULATED DC-DC CONVERTERS" IEEE INDUSTRY APPLICATIONS MAGAZINE, IEEE CENTER, US, Bd. 5, Nr. 6, November 1999 (1999-11), Seiten 27-33, XP000935947 ISSN: 1077-2618WO200282625-A3  VILATHGAMUWA M ET AL: "EMI SUPPRESSION WITH SWITCHING FREQUENCY MODULATED DC-DC CONVERTERS" IEEE INDUSTRY APPLICATIONS MAGAZINE, IEEE CENTER, US, Bd. 5, Nr. 6, November 1999 (1999-11), Seiten 27-33, XP000935947 ISSN: 1077-2618;  SIMONETTI D S L ET AL: "Control conditions to improve conducted EMI by switching frequency modulation of basic discontinuous PWM preregulators" POWER ELECTRONICS SPECIALISTS CONFERENCE, PESC '94 RECORD., 25TH ANNUAL IEEE TAIPEI, TAIWAN 20-25 JUNE 1994, NEW YORK, NY, USA,IEEE, 20. Juni 1994 (1994-06-20), Seiten 1180-1187, XP010121366 ISBN: 0-7803-1859-5;  PATENT ABSTRACTS OF JAPAN vol. 2000, no. 11, 3. Januar 2001 (2001-01-03) & JP 2000 236660 A (TOYOTA AUTOM LOOM WORKS LTD), 29. August 2000 (2000-08-29);  VILATHGAMUWA M ET AL: "EMI SUPPRESSION WITH SWITCHING FREQUENCY MODULATED DC-DC CONVERTERS", IEEE INDUSTRY APPLICATIONS MAGAZINE, IEEE CENTER, US, vol. 5, no. 6, November 1999 (1999-11-01), pages 27 - 33, XP000935947, ISSN: 1077-2618,relevantClaims[1,2,11,12],relevantPassages[&lt;pp&gt;W&lt;/pp&gt;];  SIMONETTI D S L ET AL: "Control conditions to improve conducted EMI by switching frequency modulation of basic discontinuous PWM preregulators", POWER ELECTRONICS SPECIALISTS CONFERENCE, PESC '94 RECORD., 25TH ANNUAL IEEE TAIPEI, TAIWAN 20-25 JUNE 1994, NEW YORK, NY, USA,IEEE, 20 June 1994 (1994-06-20), pages 1180 - 1187, XP010121366, ISBN: 0-7803-1859-5,relevantClaims[1-6,11-13],relevantPassages[&lt;pp&gt;W&lt;/pp&gt;];  PATENT ABSTRACTS OF JAPAN vol. 2000, no. 11 3 January 2001 (2001-01-03),relevantClaims[1-6,11],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;]