KR970008809A - Synchronous rectifier for buck converter circuit - Google Patents

Synchronous rectifier for buck converter circuit Download PDF

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Publication number
KR970008809A
KR970008809A KR1019960026740A KR19960026740A KR970008809A KR 970008809 A KR970008809 A KR 970008809A KR 1019960026740 A KR1019960026740 A KR 1019960026740A KR 19960026740 A KR19960026740 A KR 19960026740A KR 970008809 A KR970008809 A KR 970008809A
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KR
South Korea
Prior art keywords
mosfet
synchronous rectifier
inductor
power supply
power
Prior art date
Application number
KR1019960026740A
Other languages
Korean (ko)
Inventor
키렐리 리스즐로
Original Assignee
레슬리 씨. 클레버터
인터내쇼널 렉티파이어 코포레이션
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 레슬리 씨. 클레버터, 인터내쇼널 렉티파이어 코포레이션 filed Critical 레슬리 씨. 클레버터
Publication of KR970008809A publication Critical patent/KR970008809A/en

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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
    • H02M3/02—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
    • H02M3/158—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 including plural semiconductor devices as final control devices for a single load
    • H02M3/1588—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 including plural semiconductor devices as final control devices for a single load comprising at least one synchronous rectifier element
    • 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
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)

Abstract

본 발명은 벅 변환기 회로의 다이오드를 수직 전도성 전원 모스펫(MOSFET)의몸체 다이오드로 대체시켜, 낮은 전류출력에서 상기 수직 전도성 전원 모스펫(MOSFET)을 턴온시켜 인덕터 전류의 역전을 허용함으로써 더미부하의 사용을 피할 수 있는 변환기 회로용 동기식 정류기에 관한 것이다.The present invention replaces the use of a dummy load by allowing the diode of the buck converter circuit to be replaced with the body diode of a vertical conductive power MOSFET (MOSFET) to turn the vertical conductive power MOSFET (MOSFET) on at low current output to reverse the inductor current To a synchronous rectifier for a converter circuit that can be avoided.

Description

벅 변환기 회로용 동기식 정류기Synchronous rectifier for buck converter circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 종래의 벅(Buck)변환기의 회로도, 제2도는 본 발명의 기술에 의한 벅 변환기 회로용 동기식 정류기의 회로도.1 is a circuit diagram of a conventional Buck converter, and FIG. 2 is a circuit diagram of a synchronous rectifier for a buck converter circuit according to the technique of the present invention.

Claims (4)

제1, 제2직류전원 입력단자쌍과, 제1, 제2출력 부하단자쌍과, 스위칭 소자와, 상기 제1직류전원 입력단자와 스위칭소자 및 제1출력부하단자와 직렬로 연결되는 인덕터와, 상기 제1, 제2출력 부하단자 사이에 연결되는 캐피시터와, 몸체 다이오드를 갖고, 제1, 제2직류전원 입력단자와 게이트 단자를 갖는 모스 게이트된 전원장치와, 상기 인덕터 및 캐패시터와 순환적인 직렬관계로 연결되어, 상기 스위칭소자가 오프될 때, 인덕터를 통과한 전류가 몸체 다이오드의 순방향으로 전류가 통할 수 있도록 하는 상기 모스 게이트된 전원장치의 상기 제1, 제2전원단자와, 제어된 주파수와 듀티 싸이클에서 상기 스위칭 소자를 온, 오프시키는 제1제어수단과, 상기 스위칭소자가 오프될 때 인덕터를 통과한 전류를 역전시키기 위하여, 상기 모스 게이트된 전원장치의 게이트단자에 접속되어 모스전원장치를 온시키기는 제2제어 수단으로 구성되는 것을 특징으로 하는 벅 변환기 회로용 동기식 정류기.An inductor connected in series to the first DC power input terminal, the switching element, and the first output load terminal; and an inductor connected in series with the first DC power input terminal pair, the first and second output load terminal pairs, A capacitor connected between the first and second output load terminals; a MOSGated power supply unit having a body diode and having first and second DC power input terminals and a gate terminal; and a power supply unit connected between the inductor and the capacitor, The first and second power terminals of the mosguided power supply unit being connected in series so that the current passing through the inductor can pass current in the forward direction of the body diode when the switching element is turned off, A first control means for turning on and off the switching device in a frequency and duty cycle and a second control means for turning on and off the current passing through the inductor when the switching device is off, And a second control means connected to the gate terminal for turning on the MOSS power supply. 제1항에 있어서, 상기 스위칭소자는 모스 게이트된 제2전원장치인 것을 특징으로하는 벅 변환기 회로용 동기식 정류기.2. The synchronous rectifier of claim 1, wherein the switching element is a second power supply device that is mosed. 제1항에 있어서, 상기 모스 게이트된 장치는 수직 전도성 전원 모스펫(MOSFET)인 것을 특징으로 하는 벅 변환기회로용 동기식 정류기.2. The synchronous rectifier of claim 1, wherein the MOSGated device is a vertical conductive power MOSFET (MOSFET). 제2항에 있어서, 상기 모스 게이트된 장치는 수직 전도성 전원 모스펫(MOSFET)인 것을 특징으로 하는 벅 변환기회로용 동기식 정류기.3. The synchronous rectifier of claim 2, wherein the MOSGated device is a vertical conductive power MOSFET (MOSFET). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960026740A 1995-07-13 1996-07-02 Synchronous rectifier for buck converter circuit KR970008809A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50211995A 1995-07-13 1995-07-13
US08/502,119 1995-07-13

Publications (1)

Publication Number Publication Date
KR970008809A true KR970008809A (en) 1997-02-24

Family

ID=23996424

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960026740A KR970008809A (en) 1995-07-13 1996-07-02 Synchronous rectifier for buck converter circuit

Country Status (6)

Country Link
JP (1) JPH0928076A (en)
KR (1) KR970008809A (en)
DE (1) DE19625844A1 (en)
FR (1) FR2736771A1 (en)
GB (1) GB9613612D0 (en)
IT (1) IT1283142B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020058746A (en) * 2000-12-30 2002-07-12 이계안 Apparatus for disconnecting by using buck converter for a electric vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19841341A1 (en) * 1998-09-10 2000-03-16 Bosch Gmbh Robert Downward choke converter for motor vehicle, has controllable switch behind input in series with choke in longitudinal branch, with capacitor in cross branch at output and second controllable switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020058746A (en) * 2000-12-30 2002-07-12 이계안 Apparatus for disconnecting by using buck converter for a electric vehicle

Also Published As

Publication number Publication date
ITMI961441A1 (en) 1998-01-12
ITMI961441A0 (en) 1996-07-12
GB9613612D0 (en) 1996-08-28
IT1283142B1 (en) 1998-04-07
FR2736771A1 (en) 1997-01-17
JPH0928076A (en) 1997-01-28
DE19625844A1 (en) 1997-01-16

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