CA2252774A1 - Switched-mode power supply arrangement - Google Patents

Switched-mode power supply arrangement

Info

Publication number
CA2252774A1
CA2252774A1 CA002252774A CA2252774A CA2252774A1 CA 2252774 A1 CA2252774 A1 CA 2252774A1 CA 002252774 A CA002252774 A CA 002252774A CA 2252774 A CA2252774 A CA 2252774A CA 2252774 A1 CA2252774 A1 CA 2252774A1
Authority
CA
Canada
Prior art keywords
switched
power supply
mode power
parallel
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002252774A
Other languages
French (fr)
Other versions
CA2252774C (en
Inventor
Jouni Uusitalo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Oyj
Original Assignee
Nokia Telecommunications Oy
Jouni Uusitalo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Telecommunications Oy, Jouni Uusitalo filed Critical Nokia Telecommunications Oy
Publication of CA2252774A1 publication Critical patent/CA2252774A1/en
Application granted granted Critical
Publication of CA2252774C publication Critical patent/CA2252774C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/285—Single converters with a plurality of output stages connected in parallel

Abstract

The invention relates to a switched-mode power supply arrangement comprising at least two switched-mode-type power supplies (1) that comprise a transformer (2) and that have outputs (Uout) connected in parallel. According to the invention, each parallel-connected switched-mode power supply (1) comprises means (4) for generating in a reference voltage output (Uref) a voltage that is proportional to the pulse duty factor of the secondary voltage of the transformer (2), the reference voltage outputs (Uref) of each switched-mode power supply (1) to be connected in parallel are coupled together, and each parallel-connected switched-mode power supply (1) also comprises means (5, 6) for detecting a current flowing through the reference voltage output (Uref) and for generating a correction voltage (Ucor) that is proportional to this current in order to correct the output voltage (Uout) of the switched-mode power supply.
CA002252774A 1996-05-30 1997-05-29 Switched-mode power supply arrangement Expired - Fee Related CA2252774C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI962271A FI112991B (en) 1996-05-30 1996-05-30 Chopper Power Basement Arrangements
FI962271 1996-05-30
PCT/FI1997/000328 WO1997045947A1 (en) 1996-05-30 1997-05-29 Switched-mode power supply arrangement

Publications (2)

Publication Number Publication Date
CA2252774A1 true CA2252774A1 (en) 1997-12-04
CA2252774C CA2252774C (en) 2004-12-07

Family

ID=8546121

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002252774A Expired - Fee Related CA2252774C (en) 1996-05-30 1997-05-29 Switched-mode power supply arrangement

Country Status (9)

Country Link
US (1) US6121759A (en)
EP (1) EP0900469B1 (en)
CN (1) CN1075274C (en)
AU (1) AU721649B2 (en)
CA (1) CA2252774C (en)
DE (1) DE69726275T2 (en)
FI (1) FI112991B (en)
RU (1) RU2188495C2 (en)
WO (1) WO1997045947A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278597B1 (en) * 1999-10-05 2001-08-21 International Business Machines Corporation Conditional over-voltage protection for redundant phase-shift converters
CN100505492C (en) * 2004-03-31 2009-06-24 Nxp股份有限公司 Parallel arranged power supplies
EP2546771A3 (en) * 2007-10-29 2013-05-08 American Power Conversion Corporation Electrical efficiency measurement for data centers
US8896975B2 (en) * 2012-01-18 2014-11-25 Microchip Technology Incorporated Voltage regulator over-voltage detection system, method and apparatus
US8767357B2 (en) * 2012-06-14 2014-07-01 Analog Devices, Inc. Overvoltage protection system for power system with multiple parallel-connected switching power supplies

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290101A (en) * 1977-12-29 1981-09-15 Burroughs Corporation N Phase digital inverter
US4359679A (en) * 1978-01-16 1982-11-16 Wescom Switching, Inc. Switching d-c. regulator and load-sharing system for multiple regulators
US4371919A (en) * 1981-04-29 1983-02-01 Bell Telephone Laboratories, Incorporated Load distribution among parallel DC-DC converters
US4425613A (en) * 1981-05-26 1984-01-10 Sperry Corporation Forced load sharing circuit for inverter power supply
US4920309A (en) * 1989-03-24 1990-04-24 National Semiconductor Corporation Error amplifier for use with parallel operated autonomous current or voltage regulators using transconductance type power amplifiers
US5164890A (en) * 1990-03-29 1992-11-17 Hughes Aircraft Company Current share scheme for parallel operation of power conditioners
DE4025718A1 (en) * 1990-08-14 1992-02-27 Kloeckner Moeller Gmbh METHOD FOR SYMMETRICAL LOAD DISTRIBUTION IN THE OUTPUT SIDE POWER SUPPLIES
US5122726A (en) * 1990-10-31 1992-06-16 Alcatel Network Systems, Inc. Overvoltage protection for redundant power supplies

Also Published As

Publication number Publication date
FI112991B (en) 2004-02-13
EP0900469B1 (en) 2003-11-19
FI962271A0 (en) 1996-05-30
DE69726275D1 (en) 2003-12-24
AU2963997A (en) 1998-01-05
RU2188495C2 (en) 2002-08-27
CN1220053A (en) 1999-06-16
WO1997045947A1 (en) 1997-12-04
US6121759A (en) 2000-09-19
CN1075274C (en) 2001-11-21
CA2252774C (en) 2004-12-07
FI962271A (en) 1997-12-01
AU721649B2 (en) 2000-07-13
DE69726275T2 (en) 2004-08-26
EP0900469A1 (en) 1999-03-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed