IT1268472B1 - Convertitore buck a modalita' di funzionamento automaticamente determinata dal livello di carico - Google Patents

Convertitore buck a modalita' di funzionamento automaticamente determinata dal livello di carico

Info

Publication number
IT1268472B1
IT1268472B1 IT93VA000022A ITVA930022A IT1268472B1 IT 1268472 B1 IT1268472 B1 IT 1268472B1 IT 93VA000022 A IT93VA000022 A IT 93VA000022A IT VA930022 A ITVA930022 A IT VA930022A IT 1268472 B1 IT1268472 B1 IT 1268472B1
Authority
IT
Italy
Prior art keywords
operating mode
buck converter
automatically determined
load level
mode automatically
Prior art date
Application number
IT93VA000022A
Other languages
English (en)
Inventor
Maria Rosa Borghi
Paolo Sandri
Original Assignee
St Microelectronics Srl
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 St Microelectronics Srl filed Critical St Microelectronics Srl
Priority to IT93VA000022A priority Critical patent/IT1268472B1/it
Publication of ITVA930022A0 publication Critical patent/ITVA930022A0/it
Priority to DE69421148T priority patent/DE69421148T2/de
Priority to EP94830381A priority patent/EP0650249B1/en
Priority to US08/326,504 priority patent/US5617016A/en
Priority to JP6284241A priority patent/JPH07177732A/ja
Publication of ITVA930022A1 publication Critical patent/ITVA930022A1/it
Application granted granted Critical
Publication of IT1268472B1 publication Critical patent/IT1268472B1/it

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/575—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices characterised by the feedback circuit
    • 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/1563—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators without using an external clock
    • 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
    • H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
IT93VA000022A 1993-10-22 1993-10-22 Convertitore buck a modalita' di funzionamento automaticamente determinata dal livello di carico IT1268472B1 (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT93VA000022A IT1268472B1 (it) 1993-10-22 1993-10-22 Convertitore buck a modalita' di funzionamento automaticamente determinata dal livello di carico
DE69421148T DE69421148T2 (de) 1993-10-22 1994-07-25 Abwärtswandler mit einer durch die Grösse der Last automatisch bestimmten Betriebsart
EP94830381A EP0650249B1 (en) 1993-10-22 1994-07-25 Buck converter with operating mode automatically determined by the load level
US08/326,504 US5617016A (en) 1993-10-22 1994-10-20 Buck converter with operating mode automatically determined by the load level
JP6284241A JPH07177732A (ja) 1993-10-22 1994-10-24 負荷レベルで自動的に決定される動作モードを有するバックコンバータ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT93VA000022A IT1268472B1 (it) 1993-10-22 1993-10-22 Convertitore buck a modalita' di funzionamento automaticamente determinata dal livello di carico

Publications (3)

Publication Number Publication Date
ITVA930022A0 ITVA930022A0 (it) 1993-10-22
ITVA930022A1 ITVA930022A1 (it) 1995-04-22
IT1268472B1 true IT1268472B1 (it) 1997-03-04

Family

ID=11423258

Family Applications (1)

Application Number Title Priority Date Filing Date
IT93VA000022A IT1268472B1 (it) 1993-10-22 1993-10-22 Convertitore buck a modalita' di funzionamento automaticamente determinata dal livello di carico

Country Status (5)

Country Link
US (1) US5617016A (it)
EP (1) EP0650249B1 (it)
JP (1) JPH07177732A (it)
DE (1) DE69421148T2 (it)
IT (1) IT1268472B1 (it)

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5814979A (en) * 1995-06-01 1998-09-29 Maxim Integrated Products, Inc. Low drop out switching regulator
JPH09121536A (ja) * 1995-08-17 1997-05-06 Harris Corp デュアルモードｄｃ−ｄｃ変換器及び変換方法
TW440123U (en) * 1995-10-09 2001-06-07 Koninkl Philips Electronics Nv A circuit arrangement for igniting and operating a high pressure discharge lamp
TW330369B (en) * 1995-10-09 1998-04-21 Philips Electronics Nv Circuit arrangement
JP3405871B2 (ja) * 1995-11-28 2003-05-12 富士通株式会社 直流−直流変換制御回路および直流−直流変換装置
DE19641299C2 (de) * 1996-10-07 2000-08-03 Siemens Ag Getaktete Stromversorgung von Schaltnetzteilen
US5889387A (en) * 1996-12-13 1999-03-30 Intel Corporation Battery charging unit
US5945820A (en) * 1997-02-06 1999-08-31 The Board Of Trustees Of The Leland Stanford Junior University DC-DC switching regulator with switching rate control
DE19736338A1 (de) * 1997-08-21 1999-02-25 Fahrzeugklimaregelung Gmbh Leistungsendstufenschaltung mit PWM-Betrieb und Dauereinschaltbetrieb
FR2768527B1 (fr) * 1997-09-18 2000-07-13 Sgs Thomson Microelectronics Regulateur de tension
US5982639A (en) * 1997-11-04 1999-11-09 Power Integrations, Inc. Two switch off-line switching converter
US6226190B1 (en) 1998-02-27 2001-05-01 Power Integrations, Inc. Off-line converter with digital control
US6876181B1 (en) 1998-02-27 2005-04-05 Power Integrations, Inc. Off-line converter with digital control
US6107851A (en) * 1998-05-18 2000-08-22 Power Integrations, Inc. Offline converter with integrated softstart and frequency jitter
US6307356B1 (en) * 1998-06-18 2001-10-23 Linear Technology Corporation Voltage mode feedback burst mode circuit
US6140808A (en) 1998-08-05 2000-10-31 Intel Corporation DC-to-DC converter with transient suppression
KR20000028826A (ko) 1998-10-08 2000-05-25 아끼구사 나오유끼 Ｄｃ-ｄｃ 컨버터의 제어 방법, ｄｃ-ｄｃ 컨버터의 제어회로 및 ｄｃ-ｄｃ 컨버터
US6429709B1 (en) 1998-12-14 2002-08-06 Semiconductor Components Industries Llc Power converter circuit and method for controlling
US6184659B1 (en) * 1999-02-16 2001-02-06 Microchip Technology Incorporated Microcontroller with integral switch mode power supply controller
US6057607A (en) * 1999-07-16 2000-05-02 Semtech Corporation Method and apparatus for voltage regulation in multi-output switched mode power supplies
US6404265B1 (en) 1999-08-13 2002-06-11 York International Corporation Highly efficient driver circuit for a solid state switch
US6211792B1 (en) 1999-08-13 2001-04-03 JADRIć IVAN Method and apparatus detecting a failed thyristor
US6404346B1 (en) 1999-08-13 2002-06-11 York International Corporation Method and apparatus for detecting a failed thyristor
US6462971B1 (en) * 1999-09-24 2002-10-08 Power Integrations, Inc. Method and apparatus providing a multi-function terminal for a power supply controller
US6351675B1 (en) 1999-10-04 2002-02-26 Medtronic, Inc. System and method of programming an implantable medical device
US6166528A (en) * 1999-11-02 2000-12-26 Fairchild Semiconductor Corporation Lossless current sensing in buck converters working with low duty cycles and high clock frequencies
JP3602028B2 (ja) 2000-03-27 2004-12-15 沖電気工業株式会社 半導体集積回路
US6433525B2 (en) 2000-05-03 2002-08-13 Intersil Americas Inc. Dc to DC converter method and circuitry
US6525514B1 (en) * 2000-08-08 2003-02-25 Power Integrations, Inc. Method and apparatus for reducing audio noise in a switching regulator
US20040183769A1 (en) * 2000-09-08 2004-09-23 Earl Schreyer Graphics digitizer
US6411068B1 (en) 2000-10-03 2002-06-25 Bae Systems Information & Electronic Systems Integration, Inc. Self-oscillating switching regulator
JP2002369509A (ja) 2001-06-07 2002-12-20 Shindengen Electric Mfg Co Ltd スイッチング電源
DE10154814A1 (de) * 2001-11-08 2003-05-22 Infineon Technologies Ag Gleichspannungswandler mit Laststrom-Detektor
JP3571690B2 (ja) * 2001-12-06 2004-09-29 松下電器産業株式会社 スイッチング電源装置及びスイッチング電源用半導体装置
US6696825B2 (en) 2002-03-18 2004-02-24 Intersil Americas Inc. DC-to-DC converter with fast override feedback control and associated methods
DE10223123A1 (de) * 2002-05-24 2003-12-04 Bosch Gmbh Robert Erfassungsvorrichtung
KR100470593B1 (ko) * 2002-09-18 2005-03-10 삼성전자주식회사 키오프기능을 갖는 전자기기의 전원 제어장치
US6894463B2 (en) * 2002-11-14 2005-05-17 Fyre Storm, Inc. Switching power converter controller configured to provide load shedding
US6906502B2 (en) * 2002-11-14 2005-06-14 Fyre Storm, Inc. Method for regulating an output voltage of a power coverter
DE10255433A1 (de) * 2002-11-28 2004-06-09 Conti Temic Microelectronic Gmbh Verfahren zum Betreiben einer Spannungsversorgungsschaltung in einem Stromsparbetrieb
EP1429222B1 (en) * 2002-12-09 2006-08-02 Siemens Aktiengesellschaft Buck converter
JP4163015B2 (ja) * 2003-01-24 2008-10-08 シャープ株式会社 スイッチング電源回路、および、それを用いた電子機器
US7385379B2 (en) * 2003-03-06 2008-06-10 Fairchild Semiconductor Corporation No load to high load recovery time in ultraportable DC-DC converters
US6850044B2 (en) * 2003-03-13 2005-02-01 Semiconductor Components Industries, L.L.C. Hybrid regulator with switching and linear sections
JP4256810B2 (ja) * 2003-05-28 2009-04-22 オーディオ・ラボ有限会社 逆起電力防止ユニット
KR100794773B1 (ko) * 2004-02-19 2008-01-21 인터내쇼널 렉티파이어 코포레이션 부하에 응답하는 스위칭 주파수를 갖는 ｄｃ-ｄｃ 조정기
EP1884014A2 (en) * 2005-05-10 2008-02-06 Nxp B.V. Feedback communication technique for switched mode power supply
US7233504B2 (en) 2005-08-26 2007-06-19 Power Integration, Inc. Method and apparatus for digital control of a switching regulator
DE102006015339B4 (de) * 2006-04-03 2013-03-21 Texas Instruments Deutschland Gmbh Selbstoszillierender DC-DC-Abwärtswandler mit Null Hysterese
US7913199B2 (en) * 2006-07-14 2011-03-22 International Business Machines Corporation Structure for a duty cycle correction circuit
US7990120B2 (en) * 2006-08-04 2011-08-02 Linear Technology Corporation Circuits and methods for adjustable peak inductor current and hysteresis for burst mode in switching regulators
US20080106917A1 (en) * 2006-11-02 2008-05-08 James Holt Variable edge modulation in a switching regulator
TW200826450A (en) * 2006-12-04 2008-06-16 Winbond Electronics Corp Pulse width modulation controller
US8018694B1 (en) 2007-02-16 2011-09-13 Fairchild Semiconductor Corporation Over-current protection for a power converter
TW200842545A (en) * 2007-04-24 2008-11-01 Winbond Electronics Corp Controlling apparatus for a power converter and controlling method thereof
US8604709B2 (en) 2007-07-31 2013-12-10 Lsi Industries, Inc. Methods and systems for controlling electrical power to DC loads
US7598683B1 (en) 2007-07-31 2009-10-06 Lsi Industries, Inc. Control of light intensity using pulses of a fixed duration and frequency
US8903577B2 (en) 2009-10-30 2014-12-02 Lsi Industries, Inc. Traction system for electrically powered vehicles
US8108813B2 (en) * 2007-11-20 2012-01-31 International Business Machines Corporation Structure for a circuit obtaining desired phase locked loop duty cycle without pre-scaler
US7719243B1 (en) 2007-11-21 2010-05-18 Fairchild Semiconductor Corporation Soft-start system and method for power converter
US7872883B1 (en) 2008-01-29 2011-01-18 Fairchild Semiconductor Corporation Synchronous buck power converter with free-running oscillator
US7723972B1 (en) 2008-03-19 2010-05-25 Fairchild Semiconductor Corporation Reducing soft start delay and providing soft recovery in power system controllers
US8381143B2 (en) * 2008-05-29 2013-02-19 International Business Machines Corporation Structure for a duty cycle correction circuit
JP4686579B2 (ja) * 2008-07-30 2011-05-25 株式会社日立製作所 電源装置
EP2182626B1 (de) * 2008-10-31 2018-11-28 Siemens Aktiengesellschaft Verfahren zum Betrieb eines Stromrichters und nach dem Verfahren arbeitender Stromrichter
US8213187B2 (en) * 2009-10-14 2012-07-03 Power Integrations, Inc. Method and apparatus for high-side input winding regulation
EP2365622B1 (en) * 2010-03-08 2017-05-10 Nxp B.V. Method and circuit for controlling a switched-mode power converter with fast transient response
JP2012060796A (ja) * 2010-09-09 2012-03-22 Denso Corp マルチフェーズ型ｄｃ／ｄｃコンバータ回路
TWI450483B (zh) * 2011-07-20 2014-08-21 Upi Semiconductor Corp 直流對直流轉換器及其電壓轉換方法
US10305384B2 (en) * 2011-09-13 2019-05-28 Texas Instruments Incorporated Power management system and method with adaptive noise control
JP5858533B2 (ja) * 2012-03-31 2016-02-10 国立大学法人 長崎大学 制御装置および電力変換回路の制御装置
TWI522765B (zh) * 2012-05-02 2016-02-21 Automatic correction device for output power supply
US9459636B2 (en) * 2013-02-22 2016-10-04 Freescale Semiconductor, Inc. Transition control for a hybrid switched-mode power supply (SMPS)
CN104638882B (zh) * 2013-11-12 2017-11-24 登丰微电子股份有限公司 信号准位移转电路及直流转直流降压转换控制电路
US9209689B2 (en) 2013-11-19 2015-12-08 Terralux, Inc. Output regulation with nonlinear digital control loop compensation
US8975826B1 (en) 2013-11-19 2015-03-10 Terralux, Inc. Output regulation with dynamic digital control loop compensation
TWI549409B (zh) * 2014-10-03 2016-09-11 立錡科技股份有限公司 電壓轉換控制器以及電壓轉換控制方法
KR101634273B1 (ko) 2014-12-11 2016-06-29 동국대학교 산학협력단 벅 컨버터
JP6382702B2 (ja) * 2014-12-12 2018-08-29 株式会社東芝 スイッチング電源回路
CN109842326B (zh) * 2017-11-24 2020-12-01 南京德朔实业有限公司 角磨及电动工具
US10511225B1 (en) * 2018-09-07 2019-12-17 Dialog Semiconductor (Uk) Limited Low IQ hysteretic-PWM automated hybrid control architecture for a switching converter
US11218076B2 (en) * 2018-10-17 2022-01-04 Texas Instruments Incorporated Ultra-low Iq buck converter with switchable error amplifier
US11387732B2 (en) 2019-09-12 2022-07-12 Cirrus Logic, Inc. Efficient use of energy in a switching power converter
CN112511000A (zh) * 2019-09-16 2021-03-16 微芯片技术股份有限公司 具有滞后控制的电压转换器
US11469661B2 (en) 2019-10-25 2022-10-11 Cirrus Logic, Inc. Multiphase inductive boost converter with multiple operational phases
CN115668722A (zh) * 2020-05-20 2023-01-31 思睿逻辑国际半导体有限公司 使用输出电压阈值预测功率转换器中的负载电流和控制电流
CN115668721B (zh) 2020-05-20 2023-08-15 思睿逻辑国际半导体有限公司 功率转换器中的电流的随机化
US11953531B2 (en) 2020-05-20 2024-04-09 Cirrus Logic Inc. Sense resistor and method for forming same
US11658559B2 (en) 2020-05-20 2023-05-23 Cirrus Logic, Inc. Minimizing voltage droop in a power converter
US11522460B2 (en) 2020-07-24 2022-12-06 Cirrus Logic, Inc. Optimizing the control of a hysteretic power converter at low duty cycles
US11183849B1 (en) 2020-07-29 2021-11-23 Cirrus Logic, Inc. Control of power converter based on dynamic constraint factors
US11522440B2 (en) 2020-07-29 2022-12-06 Cirrus Logic, Inc. Use of shared feedback among two or more reactive schemes
US11735942B2 (en) 2020-07-29 2023-08-22 Cirrus Logic Inc. Maintaining operation within a stable region of a power curve of a power converter
WO2022035554A1 (en) 2020-08-14 2022-02-17 Cirrus Logic International Semiconductor Ltd. Power supply architecture with bidirectional battery idealization
US11843317B2 (en) 2021-08-25 2023-12-12 Cirrus Logic Inc. Pseudo-bypass mode for power converters

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4885674A (en) * 1988-03-28 1989-12-05 Varga Ljubomir D Synthesis of load-independent switch-mode power converters
US4866367A (en) * 1988-04-11 1989-09-12 Virginia Tech Intellectual Properties, Inc. Multi-loop control for quasi-resonant converters
DE3933509A1 (de) * 1989-10-06 1991-04-11 Siemens Ag Gleichspannungswandler
DE69010664T2 (de) * 1990-03-12 1994-11-17 Alcatel Nv Schaltnetzteil.
US5023541A (en) * 1990-03-23 1991-06-11 Hewlett-Packard Company Power supply control circuit having constant voltage and constant current modes
US5029269A (en) * 1990-04-12 1991-07-02 Rockwell International Corporation Delayed power supply overvoltage shutdown apparatus
US5166871A (en) * 1990-08-31 1992-11-24 International Business Machines Corporation Buck switching regulator with tow control loops
JPH07110132B2 (ja) * 1991-08-22 1995-11-22 日本モトローラ株式会社 電圧変換装置
US5477132A (en) * 1992-01-10 1995-12-19 Space Systems/Loral, Inc. Multi-sectioned power converter having current-sharing controller
US5249226A (en) * 1992-03-02 1993-09-28 Advanced Micro Devices, Inc. Apparatus for controlling a current supply device
US5548206A (en) * 1993-09-30 1996-08-20 National Semiconductor Corporation System and method for dual mode DC-DC power conversion
US5475296A (en) * 1994-04-15 1995-12-12 Adept Power Systems, Inc. Digitally controlled switchmode power supply

Also Published As

Publication number Publication date
EP0650249A1 (en) 1995-04-26
US5617016A (en) 1997-04-01
ITVA930022A1 (it) 1995-04-22
EP0650249B1 (en) 1999-10-13
JPH07177732A (ja) 1995-07-14
DE69421148D1 (de) 1999-11-18
ITVA930022A0 (it) 1993-10-22
DE69421148T2 (de) 2000-01-27

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