Canadian Patents Database

Patent Summary

(12) Patent:	(11) CA 2292175
(54) English Title:	SINGLE STAGE AC/DC CONVERTER FOR HIGH FREQUENCY AC DISTRIBUTION SYSTEMS
(54) French Title:	CONVERTISSEUR AC/DC MONOPHASIQUE POUR SYSTEMES DE DISTRIBUTION AC HAUTE FREQUENCE

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Representative Drawing

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English Abstract

Note: The Abstract is shown in the official language in which it was submitted.

An AC/DC converter for outputting high current,
low voltage output from a high frequency AC source is
described. The AC/DC converter includes two resonant
components, a resonant circuit having a capacitor and an
inductor. Both of the resonant components are connected
in series and form a series resonant circuit. The
converter further includes a transformer having a primary
winding with a center tap to a secondary winding. The
resonant circuit and the primary winding are connected in
series. The center tap is connected to an output filter
and a load, while the other two ends of the secondary
winding are connected to two controlled switches,
respectively. A drain of each of the two controlled
switches is connected to opposite ends of the secondary
winding, while each of the sources of the two controlled
switches are interconnected. Two anti-parallel diodes
are respectively connected across the two controlled
switches. Two capacitors are also respectively connected
across the two controlled switches. The on-time of the
controlled switches is regulated to control the output
voltage of the converter. The advantage is an
inexpensive converter adapted to output high currents at
low voltages with very little ripple and very low slew
rate.

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Patent Details

(51) International Patent Classification (IPC):	H02M 7/217 (2006.01) H02M 3/335 (2006.01) H02M 3/337 (2006.01)
(72) Inventors (Country):	JAIN, PRAVEEN KUMAR (Canada)
(73) Owners (Country):	CHIL SEMICONDUCTOR, INC. (Canada)
(71) Applicants (Country):	CHIPPOWER.COM, INC. (Canada)
(74) Agent:	OGILVY RENAULT LLP/S.E.N.C.R.L.,S.R.L.
(45) Issued:	2004-02-24
(22) Filed Date:	1999-12-15
(41) Open to Public Inspection:	2001-06-15
Examination requested:	2001-05-22
(30) Availability of licence:	N/A
(30) Language of filing:	English

Patent Cooperation Treaty (PCT):	No

(30) Application Priority Data:	None

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View Patent Image	Download Patent Image in PDF Format	Size of Image (KB)	Number of Pages
Cover Page	Cover Page	44	1
Abstract	Abstract	34	1
Claims	Claims	265	9
Description	Description	752	23
Drawings	Drawings	229	17
Representative Drawing	Representative Drawing	6	1