KR940019072A - Soft switching circuit of current switching power supply in current discontinuous mode - Google Patents

Soft switching circuit of current switching power supply in current discontinuous mode Download PDF

Info

Publication number
KR940019072A
KR940019072A KR1019930000122A KR930000122A KR940019072A KR 940019072 A KR940019072 A KR 940019072A KR 1019930000122 A KR1019930000122 A KR 1019930000122A KR 930000122 A KR930000122 A KR 930000122A KR 940019072 A KR940019072 A KR 940019072A
Authority
KR
South Korea
Prior art keywords
switching transistor
current
main switching
snubber capacitor
turned
Prior art date
Application number
KR1019930000122A
Other languages
Korean (ko)
Other versions
KR970003237B1 (en
Inventor
모리오 사또
Original Assignee
모리오 사또
오오히라덴시 가부시끼가이샤
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 모리오 사또, 오오히라덴시 가부시끼가이샤 filed Critical 모리오 사또
Publication of KR940019072A publication Critical patent/KR940019072A/en
Application granted granted Critical
Publication of KR970003237B1 publication Critical patent/KR970003237B1/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
    • H02M3/33569—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 several active switching elements
    • 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
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • 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
    • H02M3/33507—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 with automatic control of the output voltage or current, e.g. flyback converters
    • 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

Landscapes

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

Abstract

본 발명의 목적은, 전류 불연속모드의 타려식 스위칭전원에 있어서, 스너버 콘덴서의 에너지를 공진전류에 실려 입력측에 회생하는 소프트 스위칭회로를 실현하고, 이것에 전력손실을 늘리지않고 스위칭 노이즈를 줄일 수가 있다.An object of the present invention is to realize a soft switching circuit which regenerates energy of a snubber capacitor on a resonant current and regenerates it on an input side in a current switching mode in a current discontinuous mode, thereby reducing switching noise without increasing power loss. have.

본 발명의 구성은, 메인스위칭 트랜지스터(12)에 병렬로 접속되어 있는 스너버 콘덴서(14)에 보조스위칭 트랜지스터(15)를 병렬로 접속하고, 메인 스위칭 트랜지스터(2)의 턴오프보다 조금 지연되어 턴오프시키면, 메인스위칭 트랜지스터(12)에 가해지는 서지전압을 흡수할 수가 있다. 또 다이오드(16)를 보조스위칭 트랜지스터(15)에 병렬로 접속시켜두면, 스너버 콘덴서(14)에 충전된 전압은 전류 불연속기간에 1차권선(11)과 스너버 콘덴서(14)에 의해 일어나는 공진때 방전만이 행해진다. 즉 공진전류는 반파만 흐른다. 그리고 메인스위칭 트랜지스터(12)의 턴오프시에 흡수한 서지전압의 대부분은, 메인스위칭 트랜지스터(12)가 다음에 턴온하기전에 입력측에 회생되어, 턴온손실이 작아지게된다. 따라서 스너버 콘덴서(14)로서 종래의 방식엣 사용한 용량보다 큰 용량의 것을 사용하여도 손실이 커지지 않고, 큰 용량의 것을 사용하는만큼 스위칭노이즈가 작아지도록한 것이다.In the configuration of the present invention, the auxiliary switching transistor 15 is connected in parallel to the snubber capacitor 14 connected in parallel to the main switching transistor 12, and is slightly delayed from the turn-off of the main switching transistor 2. When turned off, the surge voltage applied to the main switching transistor 12 can be absorbed. When the diode 16 is connected to the auxiliary switching transistor 15 in parallel, the voltage charged in the snubber capacitor 14 is generated by the primary winding 11 and the snubber capacitor 14 in the current discontinuity period. Only discharge is performed at resonance. That is, the resonance current flows only half wave. Most of the surge voltage absorbed when the main switching transistor 12 is turned off is regenerated on the input side before the main switching transistor 12 is turned on next, so that the turn-on loss is reduced. Therefore, even if the capacity of the snubber capacitor 14 is larger than that used in the conventional system, the loss does not increase, and the switching noise is reduced as much as the use of the larger capacity.

Description

전류 불연속모드의 타려식 스위칭전원의 소프트 스위칭회로Soft switching circuit of current switching power supply in current discontinuous mode

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 실시예를 나타낸 회로도이다, 제2도는 본 발명의 다른 실시예를 나타낸 회로도이다, 제3도는 제1도의 회로에 있어서는 메인스위칭 트랜지스터(12)의 드레인 전류와 드레인·소오스전압과 스너버 콘덴서(14)의 충방전 전류와 스너버 콘덴서(14)양단전압의 각각의 파형도이다.FIG. 1 is a circuit diagram showing an embodiment of the present invention. FIG. 2 is a circuit diagram showing another embodiment of the present invention. FIG. 3 is a drain current and a drain source voltage of the main switching transistor 12 in the circuit of FIG. And a waveform diagram of the charge / discharge current of the snubber capacitor 14 and the voltage across the snubber capacitor 14.

Claims (1)

전류 불연속모드의 타려식 스위칭전원의 메인스위칭 트랜스의 1차권선과, 상기 1차권선과 직렬로 접속된 메인스위칭 트랜지스터와, 상기 메인스위칭 트랜지스터를 온오프시키는 콘트롤회로와, 상기 메인스위칭 트랜지스터가 턴오프할때에 상기메인스위칭 트랜지스터에 가해지는 서지전압을 흡수하기 위해 접속된, 콘덴서와 보조스위칭 트랜지스터로 이루어지는 직렬회로와, 상기 콘덴서가 흡수하여 충전한 전압을 전류불연속기간에 상기1차권선을 통해 방전시키기 위해 상기 보조스위칭 트랜지스터에 병렬로 접속된 다이오드와, 상기 보조스위칭 트랜지스터의 온오프의 시각을 상기 메인스위칭 트랜지스터의 온오프의 시각보다 지연시키기 위해, 상기 콘트롤회로와 상기 보조스위칭 트랜지스터와의 사이에 접속된 지연회로와이루어지고, 이것에 의해, 스위칭 노이즈를 억제하는 것을 특징으로 하는 전류 불연속모드의 타려식 스위칭전원의 소프트 스위칭회로.The primary winding of the main switching transformer of the current switching mode of the current discontinuous mode, the main switching transistor connected in series with the primary winding, a control circuit for turning the main switching transistor on and off, and the main switching transistor are turned on. A series circuit composed of a capacitor and an auxiliary switching transistor connected to absorb a surge voltage applied to the main switching transistor when it is turned off, and a voltage absorbed and charged by the capacitor through the primary winding in a current discontinuity period. A diode connected in parallel to the auxiliary switching transistor for discharging, and between the control circuit and the auxiliary switching transistor for delaying the on-off time of the auxiliary switching transistor from the on-off time of the main switching transistor. Consisting of a delay circuit connected to The soft switching circuit of the current-type switching power supply of the current discontinuous mode which suppresses switching noise. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930000122A 1992-12-17 1993-01-07 Soft switching circuit for separately-excited switching power source in current discontinuity mode KR970003237B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP92-361792 1992-12-17
JP4361792A JP2835899B2 (en) 1992-12-17 1992-12-17 Soft-switching circuit of discontinuous switching power supply in discontinuous current mode

Publications (2)

Publication Number Publication Date
KR940019072A true KR940019072A (en) 1994-08-19
KR970003237B1 KR970003237B1 (en) 1997-03-15

Family

ID=18474878

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930000122A KR970003237B1 (en) 1992-12-17 1993-01-07 Soft switching circuit for separately-excited switching power source in current discontinuity mode

Country Status (2)

Country Link
JP (1) JP2835899B2 (en)
KR (1) KR970003237B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002044946A (en) * 2000-07-25 2002-02-08 Tdk Corp Switching power unit
KR20030022424A (en) * 2001-07-31 2003-03-17 이현우 Power converting apparatus for high power factor panel's inverter air conditioner
CN100342631C (en) * 2002-11-08 2007-10-10 杭州千岛湖恒源电气有限公司 Soft switching circuit without absorption loss
JP6132280B2 (en) * 2012-12-14 2017-05-24 Ｎｌｔテクノロジー株式会社 DC / DC converter and display device having the same

Also Published As

Publication number Publication date
JPH06189538A (en) 1994-07-08
KR970003237B1 (en) 1997-03-15
JP2835899B2 (en) 1998-12-14

Similar Documents

Publication Publication Date Title
US4876635A (en) Series resonant inverter with lossless snubber-resetting components
JPH054849B2 (en)
KR920011042A (en) Inverter device provided with charge and discharge control circuit of DC smoothing capacitor and control method thereof
KR940017170A (en) Switch-mode power supply (SMPS) circuits and control circuits for use in these circuits
KR940006686A (en) Arc welder
US5635867A (en) High performance drive structure for MOSFET power switches
KR940019072A (en) Soft switching circuit of current switching power supply in current discontinuous mode
JPH1198832A (en) Switching power supply equipment with snubber circuit of small loss
JPH01202161A (en) Snubber circuit
JP4182306B2 (en) Forward converter with active snubber
JPH07245946A (en) Semiconductor switching circuit
JPH07111446A (en) Gate driver for voltage driven semiconductor element
JPH09117130A (en) Boost type converter circuit
JPS5863076A (en) Protection circuit for semiconductor switch element for power
US8624441B2 (en) Control circuit of cycling switch and control method thereof
JP4081731B2 (en) Switching power supply
JP2668582B2 (en) DC-DC converter
JPS61273170A (en) Clock control type dc-dc converter
KR960007997B1 (en) Converter using zero voltage switching
JP2560208Y2 (en) Soft switching circuit of self-excited switching power supply
JP2022181238A (en) Active clamp circuit
KR980011537A (en) Flyback converter with zero voltage switching.
KR19980033814A (en) Boost converter
SU1624680A1 (en) Dc key
SU1133661A2 (en) Pulse shaper

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20050119

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee