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WO1998038727A3 - Dc-dc converter with multiple outputs turned on and off in certain sequence - Google Patents

Dc-dc converter with multiple outputs turned on and off in certain sequence Download PDF

Info

Publication number
WO1998038727A3
WO1998038727A3 PCT/FI1998/000149 FI9800149W WO9838727A3 WO 1998038727 A3 WO1998038727 A3 WO 1998038727A3 FI 9800149 W FI9800149 W FI 9800149W WO 9838727 A3 WO9838727 A3 WO 9838727A3
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
circuit
power supply
mode power
switched
Prior art date
Application number
PCT/FI1998/000149
Other languages
Finnish (fi)
French (fr)
Other versions
WO1998038727A2 (en
Inventor
Matti Havukainen
Mika Kuntijaervi
Original Assignee
Nokia Telecommunications Oy
Matti Havukainen
Mika Kuntijaervi
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, Matti Havukainen, Mika Kuntijaervi filed Critical Nokia Telecommunications Oy
Priority to AU62167/98A priority Critical patent/AU6216798A/en
Publication of WO1998038727A2 publication Critical patent/WO1998038727A2/en
Publication of WO1998038727A3 publication Critical patent/WO1998038727A3/en

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
    • H02M3/325—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 using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33561—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/14—Balancing the load in a network
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
    • H02M1/0022—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being input voltage fluctuations

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The switched mode power supply according to the invention has an input voltage under-voltage indicator (12), an output voltage monitoring block (16), a circuit (23) performing a logical function and a controlled switch (24). The circuit performing a logical function functions in such a way that it controls the controlled switch (24) to close at once when the first output voltage monitoriing circuit has found that this voltage has reached its nominal value and input voltage information indicates that there is a sufficient voltage in the switched mode power supply primary. The load supplied by the switched mode power supply will hereby first be provided in a controlled manner with a first voltage (V1) and only thereafter with a second voltage (V2). If the input voltage is cutt off or it becomes too low, the circuit performing a logical function will control the switch (24) to open at once, whereby the first voltage (V1) is switched off the load. On the other hand, energy charged in capacitors of the switched mode power supply secondary circuit will keep the second voltage (V2) at its nominal value for some time. In this way, the first voltage (V1) is first switched off the load in a controlled manner and the second voltage falling according to a time constant will remain effective for some time.
PCT/FI1998/000149 1997-02-28 1998-02-19 Dc-dc converter with multiple outputs turned on and off in certain sequence WO1998038727A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU62167/98A AU6216798A (en) 1997-02-28 1998-02-19 Dc-dc converter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI970871 1997-02-28
FI970871A FI970871A7 (en) 1997-02-28 1997-02-28 Switching power supply

Publications (2)

Publication Number Publication Date
WO1998038727A2 WO1998038727A2 (en) 1998-09-03
WO1998038727A3 true WO1998038727A3 (en) 1998-12-23

Family

ID=8548308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1998/000149 WO1998038727A2 (en) 1997-02-28 1998-02-19 Dc-dc converter with multiple outputs turned on and off in certain sequence

Country Status (3)

Country Link
AU (1) AU6216798A (en)
FI (1) FI970871A7 (en)
WO (1) WO1998038727A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2363213A (en) * 2000-06-07 2001-12-12 Lucent Technologies Inc Maintaining power supply during loss of input
KR100491599B1 (en) * 2002-08-29 2005-05-27 삼성전자주식회사 high voltage generator
KR20060082753A (en) * 2005-01-13 2006-07-19 엘지전자 주식회사 Driving apparatus and driving method of plasma display panel
JP4247640B2 (en) * 2006-09-19 2009-04-02 船井電機株式会社 Plasma television and power circuit
DE102006046383B4 (en) * 2006-09-29 2011-08-25 Texas Instruments Deutschland GmbH, 85356 Power supply circuit
KR100823483B1 (en) * 2007-01-18 2008-04-21 삼성에스디아이 주식회사 Plasma display device and its power supply
TWI756936B (en) 2020-11-24 2022-03-01 瑞昱半導體股份有限公司 Power supply circuit
CN114583947A (en) * 2020-11-30 2022-06-03 瑞昱半导体股份有限公司 Power supply circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412308A (en) * 1994-01-06 1995-05-02 Hewlett-Packard Corporation Dual voltage power supply
US5455501A (en) * 1994-03-24 1995-10-03 Intel Corporation Multiple output DC-DC converter with different ranges of output assurance and capable of tolerating load transients

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412308A (en) * 1994-01-06 1995-05-02 Hewlett-Packard Corporation Dual voltage power supply
US5455501A (en) * 1994-03-24 1995-10-03 Intel Corporation Multiple output DC-DC converter with different ranges of output assurance and capable of tolerating load transients

Also Published As

Publication number Publication date
WO1998038727A2 (en) 1998-09-03
FI970871A0 (en) 1997-02-28
FI970871A7 (en) 1998-08-29
AU6216798A (en) 1998-09-18

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