KR930007549Y1 - Switching regulator inverter circuit - Google Patents

Switching regulator inverter circuit Download PDF

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Publication number
KR930007549Y1
KR930007549Y1 KR2019880020837U KR880020837U KR930007549Y1 KR 930007549 Y1 KR930007549 Y1 KR 930007549Y1 KR 2019880020837 U KR2019880020837 U KR 2019880020837U KR 880020837 U KR880020837 U KR 880020837U KR 930007549 Y1 KR930007549 Y1 KR 930007549Y1
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South Korea
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capacitor
diode
circuit
switching regulator
switching
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KR2019880020837U
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Korean (ko)
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KR900013572U (en
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이병인
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삼성전기 주식회사
서주인
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Priority to KR2019880020837U priority Critical patent/KR930007549Y1/en
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    • 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
    • H02M3/33523—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 with galvanic isolation between input and output of both the power stage and the feedback loop
    • 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)

Abstract

내용 없음.No content.

Description

스위칭 레귤레이터 인버터회로Switching Regulator Inverter Circuit

제 1 도는 종래의 회로도.1 is a conventional circuit diagram.

제 2 도는 본 고안의 회로도.2 is a circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

Q1: 스위칭트랜지스터 T1: 스위칭트랜스Q 1: the switching transistor T 1: the switching transformer

BD1: 브릿지다이오드 D1-D3: 다이오드BD 1 : bridge diode D 1 -D 3 : diode

C1-C4: 콘덴서 R1: 저항C 1 -C 4 : Capacitor R 1 : Resistance

본 고안은 AC 입력전압을 DC로 변환시켜 스위칭트랜스를 통과시킨 후 다시 DC 출력을 내는 스위칭레귤레이터 인버터회로에 관한 것이다.The present invention relates to a switching regulator inverter circuit that converts an AC input voltage to DC, passes a switching transformer, and then outputs a DC output.

일반적인 스위칭레귤레이터회로는 제 1 도에 도시하고 있는 바와같이 상용 AC 전압이 브릿지다이오드(BD1) 및 콘덴서(C1)로 정류된 후 스위칭트랜지스터(Q1)의 스위칭에 따라 스위칭트랜지스터(T1)의 1차코일에 전류를 흘려주게 구성되고, 또한 상기 스위칭트랜스(T1) 1차코일의 역기전압에 대한 스너버(snubber)회로가 다이오드(D1), 콘덴서(C2) 및 저항(R1)의 직병렬회로로 구성되며 스위칭트랜스(T1)의 2차측에 나타나는 전압이 다이오드(D3) 및 콘덴서(C4)로 정류되어 출력되게 구성된다.Typical switching regulator circuit includes a switching transistor (T 1) in accordance with the switching of after rectified by the first and the commercial AC voltage bridge diode (BD 1) As shown in Figure, and a capacitor (C 1) a switching transistor (Q 1) And a snubber circuit for the counter electromotive voltage of the switching transformer (T 1 ), the diode (D 1 ), the capacitor (C 2 ), and the resistor (R). It is composed of a series-parallel circuit of 1 ) and the voltage appearing on the secondary side of the switching transformer T 1 is configured to be rectified and output to the diode D 3 and the capacitor C 4 .

이러한 종래의 회로에서는 정전사고로 인한 입력 AC 상용전압이 공급되지 않을 경우, 출력 DC 전압은 입력 회로의 평활콘덴서(C1)의 용량에 따르는 출력보지시간을 가지게 되므로, 상기 출력보지시간을 연장하기 위해서는 상기 콘덴서(C1)의 용량을 증가시켜 주어야 한다.In such a conventional circuit, when the input AC commercial voltage is not supplied due to a power failure, the output DC voltage has an output holding time corresponding to the capacity of the smoothing capacitor C 1 of the input circuit, thereby extending the output holding time. In order to increase the capacity of the capacitor (C 1 ).

연장하기 위해서는 상기 콘덴서(C1)의 용량을 증가시켜 주어야 한다.In order to extend, the capacity of the capacitor C 1 must be increased.

그러나, 상기 콘덴서(C1)의 용량에 비례해서 입력 AC의 돌입전류가 결정되므로 콘덴서(C1)의 용량을 무한정 증가시킬 수 없는 문제가 있기 때문에, 회로설계상 돌입전류와 DC 출력보지시간을 조절하는데 곤란이 따르게 된다.However, the circuit design the inrush current and the DC output holding time because of the capacitor (C 1) have a problem that can not be indefinitely increased the capacity of the so-rush current of the input AC the crystal capacitor (C 1) in proportion to the capacity of Difficulties in adjusting.

본 고안은 이와같은 점을 감안하여 안출한 것으로, DC 출력보지시간이 연장되면서 돌입전류를 유효하게 제어할 수 있게 되는 스위칭레귤레이터 인버터회로를 제공하는데 본 고안의 목적이 있는 것이다.The present invention has been made in view of the above, and it is an object of the present invention to provide a switching regulator inverter circuit that can effectively control the inrush current while the DC output holding time is extended.

이하 첨부한 도면에 따라 본 고안을 설명하면 다음과 같다.Hereinafter, the present invention according to the accompanying drawings.

제 2 도에 도시하고 있는 바와같이, 상용 AC 전압이 브릿지다이오드(BD1)와 콘덴서(C1)로 정류된후 스위칭트랜지스터(Q1)의 스위칭 동작에 따라 스위칭트랜스(T1)의 1차코일을 통하도록 연결하고, 상기 트랜스(T1)의 1차양측단에는 저항(R1), 콘덴서(C2) 및 다이오드(D1)로 구성되는 스너버회로를 연결한다.As shown in FIG. 2, after the commercial AC voltage is rectified to the bridge diode BD 1 and the capacitor C 1 , the primary of the switching transistor T 1 is changed according to the switching operation of the switching transistor Q 1 . A coil is connected to each other, and a snubber circuit composed of a resistor R 1 , a capacitor C 2 , and a diode D 1 is connected to both ends of the transformer T 1 .

상기 콘덴서(C1)의 양단에는 다이오드(D2)와 콘덴서(C3)의 직렬회로를 연결하고, 상기 다이오드(D2)와 콘덴서(C3)의 공통연결점에 상기 저항(R1)을 연결한다.The resistor (R 1) to the common connection point of the capacitor (C 1) between both terminals of the diode (D 2) and a capacitor (C 3) connected to the series circuit, and the diode (D 2) and a capacitor (C 3) Connect.

상기 스위칭트랜스(T1)의 2차 코일에 유기된 전압을 다이오드(D3)와 콘덴서(C4)로 정류되어 DC 출력전압으로 출력되게 연결한다.The voltage induced in the secondary coil of the switching transformer T 1 is rectified by the diode D 3 and the capacitor C 4 and connected to be output as a DC output voltage.

이와같이 구성된 본 고안의 작용 및 효과를 설명하면 다음과 같다. 제 2 도에서, 회로동작시에는 브릿지다이오드(BD1)에서 정류된 전압이 콘덴서(C1)는 물론 저항(R1)을 통하여 콘덴서(C3)에도 축적된다.Referring to the operation and effects of the present invention configured as described above are as follows. In FIG. 2, in the circuit operation, the voltage rectified in the bridge diode BD 1 is accumulated in the capacitor C 3 through the resistor R 1 as well as the capacitor C 1 .

따라서, 정전사고등에 의해 입력 AC 전압이 나타나지 않게되면 콘덴서(C1)에 충전된 전하와 콘덴서(C3)에 충전된 전하의 방전으로, 스위칭트랜지스터(Q1)의 동작에 의해서 스위칭트랜스(T1)에 전류가 흐르게되게 때문에 일정시간만큼 DC 출력을 보지할 수 있게된다.Accordingly, when the input AC voltage does not appear due to an electrostatic accident or the like, discharge of the charge charged in the capacitor C 1 and the charge charged in the capacitor C 3 is caused by the operation of the switching transistor Q 1 . Since current flows in 1 ), the DC output can be held for a certain time.

이때, 콘덴서(C3)에 의해 배가된 측정용량이 다이오드(D2)를 통하여 스위칭트랜스(T1)의 1차코일에 전류를 제공하게 되므로 인버터회로에서의 DC 출력보지시간을 연장시켜줄 수 있게되는 것이다.At this time, since the measured capacitance doubled by the capacitor (C 3 ) provides a current to the primary coil of the switching transformer (T 1 ) through the diode (D 2 ) to extend the DC output holding time in the inverter circuit. Will be.

한편, AC 돌입전류시에는, 콘덴서(C3)에는 다이오드(D2)에 의해 전류의 유입이 억제되므로 기존의 회로에서와 같이 콘덴서(C1)의 용량에 의해서만 돌입전류가 결정되게 된다.On the other hand, at the time of AC inrush current, inflow of current into the capacitor C 3 is suppressed by the diode D 2 , so that the inrush current is determined only by the capacity of the capacitor C 1 as in the conventional circuit.

이상에서 설명한 바와같은 본 고안은 스위칭레귤레이터 인버터회로에서의 간단한 회로변경으로서 입력 AC 전압공급차단시, 별도의 추가적인 돌입전류 억제회로의 구성을 필요로 하지 않으면서 DC 출력보지시간을 연장할 수 있게 되는 특유의 효과가 있게되는 것이다.As described above, the present invention is a simple circuit change in the switching regulator inverter circuit, and when the input AC voltage supply is interrupted, the DC output holding time can be extended without requiring an additional inrush current suppression circuit. Will be a unique effect.

Claims (1)

스위칭레귤레이터 입력회로에 있어서, 평활콘덴서(C1)의 양단에 다이오드(D2)와 콘덴서(C3)의 직렬회로를 병렬로 연결하고, 스위칭트랜스(T1)의 양단에 콘덴서(C2)와 다이오드(D1)의 직렬회로를 병렬로 연결하고, 상기 다이오드(D2) 및 콘덴서(C3)와 상기 콘덴서(C2) 및 다이오드(D1)의 각 공통점 사이에 저항(R|1)을 연결하여 구성하는 것을 특징으로 하는 스위칭레귤레이터 인버터회로.In the switching regulator type circuit, a smoothing capacitor diode to both ends of the (C 1) (D 2) and a capacitor capacitor a series circuit of (C 3) to both ends of the connection in parallel, the switching transformer (T 1) (C 2) And a series circuit of the diode (D 1 ) are connected in parallel, and a resistance (R | 1 ) between each common point of the diode (D 2 ) and the capacitor (C 3 ) and the capacitor (C 2 ) and the diode (D 1 ). ) Switching regulator inverter circuit characterized in that the configuration by connecting.
KR2019880020837U 1988-12-15 1988-12-15 Switching regulator inverter circuit KR930007549Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880020837U KR930007549Y1 (en) 1988-12-15 1988-12-15 Switching regulator inverter circuit

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Application Number Priority Date Filing Date Title
KR2019880020837U KR930007549Y1 (en) 1988-12-15 1988-12-15 Switching regulator inverter circuit

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KR900013572U KR900013572U (en) 1990-07-05
KR930007549Y1 true KR930007549Y1 (en) 1993-11-03

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KR2019880020837U KR930007549Y1 (en) 1988-12-15 1988-12-15 Switching regulator inverter circuit

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