CA2041696A1 - Switched mode power supply having a discharge circuit for an auxiliary power source - Google Patents

Switched mode power supply having a discharge circuit for an auxiliary power source

Info

Publication number
CA2041696A1
CA2041696A1 CA2041696A CA2041696A CA2041696A1 CA 2041696 A1 CA2041696 A1 CA 2041696A1 CA 2041696 A CA2041696 A CA 2041696A CA 2041696 A CA2041696 A CA 2041696A CA 2041696 A1 CA2041696 A1 CA 2041696A1
Authority
CA
Canada
Prior art keywords
circuit
switching
output
power
detecting
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
CA2041696A
Other languages
French (fr)
Other versions
CA2041696C (en
Inventor
Intae Lee
Myunghwan Kim
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of CA2041696A1 publication Critical patent/CA2041696A1/en
Application granted granted Critical
Publication of CA2041696C publication Critical patent/CA2041696C/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
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
    • 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
    • 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
    • H02M3/33538—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 of the forward type
    • H02M3/33546—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 of the forward type with automatic control of the output voltage or current
    • H02M3/33553—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 of the forward type with automatic control of the output voltage or current with galvanic isolation between input and output of both the power stage and the feedback loop

Abstract

An SMPS including a primary rectifying circuit connected to an AC power supply, a transformer connected to the primary rectifying circuit, a secondary rectifying circuit connected to the secondary side of the transformer, a voltage fluctuation sensing section connected to the output of the secondary rectifying circuit for sensing the fluctuation of the output voltage, a switching signal generator for generating switching signals according to the output signals of the voltage fluctuation sensing section, a switching transistor inserted between the transformer and ground for executing switching operations repeatedly according to the switching signals, a protective circuit for detecting the state of the output voltage and stopping the operation of the switching signal generator in abnormal state, and an auxiliary power circuit for supplying the operating power to the switching signal generator and the protective circuit.

The SMPS further comprises an AC power cut-off detecting circuit for detecting whether the AC power is interrupted or not and a discharge circuit for discharging the residual electric charge of the auxiliary power circuit according to the output of the detecting circuit.
CA002041696A 1990-05-11 1991-05-02 Switched mode power supply having a discharge circuit for an auxiliary power source Expired - Fee Related CA2041696C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR90-6335 1990-05-11
KR2019900006335U KR920005724Y1 (en) 1990-05-11 1990-05-11 Circuit for switching mode power supply

Publications (2)

Publication Number Publication Date
CA2041696A1 true CA2041696A1 (en) 1991-11-12
CA2041696C CA2041696C (en) 1995-11-28

Family

ID=19298708

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002041696A Expired - Fee Related CA2041696C (en) 1990-05-11 1991-05-02 Switched mode power supply having a discharge circuit for an auxiliary power source

Country Status (10)

Country Link
US (1) US5140511A (en)
JP (1) JP2551390Y2 (en)
KR (1) KR920005724Y1 (en)
CA (1) CA2041696C (en)
DE (1) DE9105983U1 (en)
FR (1) FR2662031B1 (en)
GB (1) GB2243963B (en)
HK (1) HK112594A (en)
IT (1) IT1248394B (en)
NL (1) NL193922C (en)

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US5285367A (en) * 1992-02-07 1994-02-08 Power Integrations, Inc. Linear load circuit to control switching power supplies under minimum load conditions
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US5537029A (en) * 1992-02-21 1996-07-16 Abb Power T&D Company Inc. Method and apparatus for electronic meter testing
US5457621A (en) * 1992-02-21 1995-10-10 Abb Power T&D Company Inc. Switching power supply having voltage blocking clamp
US5828207A (en) * 1993-04-20 1998-10-27 The United States Of America As Represented By The Secretary Of The Navy Hold-up circuit with safety discharge for preventing shut-down by momentary power interruption
US5586016A (en) * 1994-07-05 1996-12-17 Motorola, Inc. Circuit for quickly energizing electronic ballast
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CA2269499C (en) 1996-10-22 2006-03-28 Abb Power T & D Company Inc. Energy meter with power quality monitoring and diagnostic systems
US5864457A (en) * 1997-01-21 1999-01-26 Dell Usa, L.P. System and method for controlling current flow in an AC adapter
JP3224756B2 (en) * 1997-04-16 2001-11-05 インターナショナル・ビジネス・マシーンズ・コーポレーション Power supply device with internal AC adapter and portable electronic device
US6104622A (en) * 1997-04-30 2000-08-15 Fidelix Y.K. Power supply apparatus for reduction of power consumption
KR19990004629A (en) * 1997-06-28 1999-01-15 이형도 High voltage discharge circuit
JP3337009B2 (en) * 1999-07-02 2002-10-21 株式会社村田製作所 Switching power supply
JP3391774B2 (en) 2000-10-20 2003-03-31 Ｓｍｋ株式会社 Intermittent operation type switching power supply circuit
KR100423995B1 (en) 2002-05-15 2004-03-22 삼성전자주식회사 Apparatus and method for standby power control
JP3698206B2 (en) * 2002-09-27 2005-09-21 横河電機株式会社 Switching power supply
US7227350B2 (en) 2004-03-18 2007-06-05 Elster Electricity, Llc Bias technique for electric utility meter
US7315162B2 (en) 2004-03-18 2008-01-01 Elster Electricity, Llc Reducing power consumption of electrical meters
US7355867B2 (en) * 2004-08-17 2008-04-08 Elster Electricity, Llc Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage
US7414862B2 (en) * 2005-03-21 2008-08-19 Chan Woong Park Method and apparatus for regulating an output current from a power converter
KR101503873B1 (en) * 2008-12-09 2015-03-20 삼성전자주식회사 Auxiliary power supply and user device including the same
US8250385B2 (en) * 2009-01-30 2012-08-21 Hewlett-Packard Development Company, L.P. Method and system of dissipating power from a power supply
KR101593939B1 (en) * 2009-10-23 2016-02-15 삼성전자 주식회사 Display apparatus power supply apparatus and power supply method thereof
KR101677612B1 (en) 2009-10-29 2016-11-18 엘지전자 주식회사 Swiching mode power supply and controlling method thereof
TW201138253A (en) * 2010-04-22 2011-11-01 Leadtrend Tech Corp Discharging module applied in a switched-mode power supply and method thereof
TWI418125B (en) * 2010-05-28 2013-12-01 Shamrock Micro Devices Corp Switched-mode power supplies and control methods thereof
US8482208B2 (en) * 2010-05-28 2013-07-09 Shamrock Micro Devices Corp. Switching mode power supplies and control methods used therein to provide power factor correction and constant output current
KR20120016792A (en) * 2010-08-17 2012-02-27 삼성전자주식회사 Display apparatus, power supply apparatus and power supply method thereof
KR101365602B1 (en) * 2011-10-21 2014-03-14 삼성전자주식회사 Apparatus for power supplying and image forming apparatus including the same
TWI576689B (en) * 2012-07-18 2017-04-01 全漢企業股份有限公司 Apparatus and method for power supply
FR2999028B1 (en) * 2012-11-30 2016-02-05 Schneider Electric Ind Sas OVERVOLTAGE PROTECTION DEVICE FOR AUTOMATIC POWER SUPPLY.
JP6054236B2 (en) * 2013-04-23 2016-12-27 新電元工業株式会社 Power supply circuit, semiconductor integrated circuit, isolated switching power supply
JP6032749B2 (en) * 2013-06-25 2016-11-30 ニチコン株式会社 Switching power supply
TWI489258B (en) * 2014-05-16 2015-06-21 Delta Electronics Inc Power supply apparatus with input voltage detection and method of operating the same
CN104348139A (en) * 2014-10-24 2015-02-11 深圳市炜烨丰电子科技有限公司 Safe energy-saving power supply
CN105158550A (en) * 2015-07-22 2015-12-16 珠海格力电器股份有限公司 Switching power supply and voltage peak value detecting device and method thereof
WO2017090182A1 (en) * 2015-11-27 2017-06-01 東芝キヤリア株式会社 Air conditioning system and indoor unit used in same
JP6932313B2 (en) * 2018-02-27 2021-09-08 沖電気工業株式会社 Power supply and image forming equipment

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Also Published As

Publication number Publication date
HK112594A (en) 1994-10-27
FR2662031B1 (en) 1996-04-05
NL193922B (en) 2000-10-02
DE9105983U1 (en) 1991-08-01
ITMI911270A0 (en) 1991-05-09
NL193922C (en) 2001-02-05
GB9109831D0 (en) 1991-06-26
JP2551390Y2 (en) 1997-10-22
FR2662031A1 (en) 1991-11-15
KR920005724Y1 (en) 1992-08-20
GB2243963A (en) 1991-11-13
JPH0624390U (en) 1994-03-29
IT1248394B (en) 1995-01-11
GB2243963B (en) 1993-11-17
ITMI911270A1 (en) 1992-11-09
NL9100797A (en) 1991-12-02
KR910021145U (en) 1991-12-20
US5140511A (en) 1992-08-18
CA2041696C (en) 1995-11-28

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