KR890001725Y1 - Switching ragulator - Google Patents

Switching ragulator Download PDF

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Publication number
KR890001725Y1
KR890001725Y1 KR2019850016589U KR850016589U KR890001725Y1 KR 890001725 Y1 KR890001725 Y1 KR 890001725Y1 KR 2019850016589 U KR2019850016589 U KR 2019850016589U KR 850016589 U KR850016589 U KR 850016589U KR 890001725 Y1 KR890001725 Y1 KR 890001725Y1
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South Korea
Prior art keywords
transistor
terminal
resistor
constant current
comparator
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KR2019850016589U
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Korean (ko)
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KR870011410U (en
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이경근
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삼성전자주식회사
정재은
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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
    • H02M3/02—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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits

Abstract

내용 없음.No content.

Description

정전류용 스위칭 레귤레이터Constant Current Switching Regulator

첨부도면은 본 고안의 회로도.The accompanying drawings are circuit diagrams of the present invention.

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

CO : 비교기 Q1, Q2, Q3: 트랜지스터CO: Comparator Q 1 , Q 2 , Q 3 : Transistor

D1, D2: 다이오드 ZD : 제너다이오드D 1 , D 2 : Diode ZD: Zener Diode

Rf, R1~R12: 저항 L : 인덕턴스R f , R 1 ~ R 12 : Resistance L: Inductance

a : 단자점 VC: 전원입력단자a: Terminal point V C : Power input terminal

IO1, IO2: 정전류 출력단자IO 1 , IO 2 : constant current output terminal

본 고안은 스위칭 레귤레이터회로를 구성하여 전류의 양을 휘드백시켜 그 양에 따라서 스위칭 레귤레이터를 동작하게 하여 정 전류원을 얻고 모터의 열손실을 줄일 수 있게한 것에 목적을 둔 정 전류용 스위칭레귤레이터에 관한 것이다.The present invention relates to a switching regulator for a constant current, the object of which is to configure the switching regulator circuit to bend back the amount of current to operate the switching regulator according to the amount to obtain a constant current source and to reduce the heat loss of the motor will be.

종래에는 모터 양단에 일정한 전압을 공급하면 모터의 속도가 증가함에 따라 전류가 줄어들므로서 일정한 속도이상에서는 토오크가 모자라서 종국에는 정지하게 되는데 이러한 현상을 막기 위하여 그 양단에 고전압을 걸어주는 방식을 택하였지만 회전이 상승하여 코일 인덕턴스에 의한 영향이 증가하더라도 직렬 저항에 의해 전류는 별로 감소하지 않게 되지만 모터가 저속 회전이나 정지시에는 열 손실이 발생하게 되는 결점이 있었다.Conventionally, if a certain voltage is supplied to both ends of the motor, the current decreases as the speed of the motor increases, and thus torque is shortened at a certain speed or more, and eventually stops. To prevent such a phenomenon, a method of applying a high voltage to both ends is taken. However, even if the effect of the coil inductance increases due to the increase in rotation, the current does not decrease much due to the series resistance, but heat loss occurs when the motor rotates at low speed or stops.

본 고안은 상기와 같은 종래의 결점을 해결 하고자 스위칭 레귤레이터 회로를 구성하여 전류의 양을 휘드백시켜 일정한 전류를 유지시켜 정 전류를 얻게 하고 열 손실을 줄일수 있게한 것에 관한 것으로서 이를 첨부 도면에 따라서 상세히 설명하면 다음과 같다.The present invention has been made in order to solve the above-mentioned shortcomings by configuring a switching regulator circuit to bend back the amount of current to maintain a constant current to obtain a constant current and to reduce the heat loss according to the accompanying drawings It will be described in detail as follows.

트랜지스터(Q1)의 콜렉터 에미터 사이에 다이오드(D1)를 연결하여 이의 에미터 단자에 인덕턴스(L)를 통해 정전류 출력단자(IO1)에 연결하고 트랜지스터(Q1)의 베이스 단자에서 트랜지스터(Q2)의 콜렉터를 직결하고 또한 저항(R1)을 통해 트랜지스터(Q1)의 에미터측에 직결하며 다이오드(D2)를 통해 접지시키고 전원 입력단자(Vc)에서 트랜지스터(Q1, Q2)의 콜렉터 에미터에 직결하며 저항(R2)을 통해 트랜지스터 (Q2)의 베이스측에 연결하며 저항(R3)을 통해 단자점(a)에 접속하고 트랜지스터(Q2)의 베이스측단자에서 저항(R4)을 통해 트랜지스터(Q3)의 콜렉터에 연결하고 정 전류 출력단자(IO2)에서 저항(Rf)과 가변저항(VR1) 및 저항(R5)을 연결하여 접지시키고 정 전류 출력단자(IO1)에서 콘덴서(C2)을 거쳐 접지시키고 가변저항(VR1)의 가변단자에서 저항(R6)을 거쳐 비교기(CO)의 부(-)측 입력단자에 직결하고 저항(R7)을 거쳐 단자점(a)에 연결하고 비교기 (CO)의 정(+)측 입력단자와 출력단자에서 저항(R8,R11)을 통해 단자점(a)에 연결하고 휘드백저항(R9)을 연결하고 비교기(CO)의 정(+)측 단자에 저항(R10)을 통해 접지시키고 또한 출력단자에 트랜지스터(Q3)의 바이어스저항 (R12)을 연결하며 트랜지스터(Q3)의 에미터를 접지시키고 단자점(a)에서 콘덴서(C1)와 제너다이오드(ZD)를 병렬로 연결하여 접지시켜서 된 것이다.A diode D 1 is connected between the collector emitters of the transistor Q 1 and connected to the constant current output terminal IO 1 through an inductance L at its emitter terminal and a transistor at the base terminal of the transistor Q 1 . Directly connect the collector of (Q 2 ) and directly to the emitter side of transistor (Q 1 ) through resistor (R 1 ), ground through diode (D 2 ), and connect transistor (Q 1 ,) at power input (V c ). Directly connected to the collector emitter of Q 2 ) and connected to the base side of transistor Q 2 via resistor R 2 , connected to terminal point a through resistor R 3 , and to the base of transistor Q 2 . in the side terminal and via a resistor (R 4) connected to a collector of the transistor (Q 3) and the constant current output terminal (IO 2) connecting a resistor (R f) and the variable resistor (VR 1) and a resistor (R 5) in the Grounding and grounding from the constant current output terminal (IO 1 ) through the capacitor (C 2 ) and the variable resistor (VR 1 ) The terminal is directly connected to the negative input terminal of the comparator (CO) via a resistor (R 6 ), connected to the terminal point (a) via a resistor (R 7 ), and the positive (+) side input of the comparator (CO). Connect to terminal point (a) through resistor (R 8 , R 11 ) at terminal and output terminal, connect feedback signal (R 9 ) and resistor (R 10 ) at positive terminal of comparator (CO) the ground and also connected to a bias resistor (R 12) of the transistor (Q 3) to the output terminal through, and a transistor (Q 3) the capacitor (C 1) on the ground the emitter and the terminal point (a) of the Zener diode (ZD ) In parallel by grounding.

이와 같은 회로로서 구성된 본 고안의 동작 및 작용효과를 설명하면 다음과 같다.Referring to the operation and effect of the present invention configured as such a circuit is as follows.

정전류 출력단자(IO1) (IO2)에 부하(RL)를 연결하여 전압을 공급하면 전류(I)가 흐르게 되어 저항(Rf) 양단에 전압(E = I×Rf)이 걸리게 된다.Supplying a voltage by connecting the load R L to the constant current output terminal IO 1 (IO 2 ) causes the current I to flow and the voltage E = I × R f across the resistor R f . .

따라서 저항(R5,R6,R7) 및 가변저항(VR1)에 의해 비교기(CO)의 부(-)측 입력단자에 전압이 공급되는데, 여기서 상기 가변저항(VR1)은 전류조정용으로서 비교기 (CO)의 부(-)측 입력단자에 공급되는 전압의 크기를 조절하도록 되어 있다.Therefore, a voltage is supplied to the negative input terminal of the comparator CO by the resistors R 5 , R 6 and R 7 and the variable resistor VR 1 , where the variable resistor VR 1 is used for current regulation. As a result, the magnitude of the voltage supplied to the negative input terminal of the comparator CO is adjusted.

한편 비교기(CO)의 정(+)측 입력단자에는 단자점(a)의 전압이 전압분배저항 (R8, R10)에 의해 분할되어 입력되는데, 상기 단자점(a)에는 전원입력단자(Vc)를 통해 인가된 직류전원이 저항(R3)에 의해 강하되어 인가되며, 콘덴서(C1)의 정전용량과 제너다이오드(ZD)에 의해 일정전압을 유지하도록 되어 있다.On the other hand, the voltage of the terminal point a is input to the positive (+) side input terminal of the comparator CO by being divided by the voltage distribution resistors R 8 and R 10. The terminal point a has a power input terminal ( The DC power applied through V c ) is dropped and applied by the resistor R 3 , and the constant voltage is maintained by the capacitance of the capacitor C 1 and the zener diode ZD.

따라서 비교기(CO)에서는 정(+)측 입력단자에 설정된 일정한 기준전압과 부(-)측 입력단자로 인가되는 전류(I)에 따른 비례전압을 비교하며, 상기 비교기(CO)의 출력에 따라 스위칭용 트랜지스터(Q1~Q3)들이 온, 오프되는데, 정전류 출력이 설정 전류보다 적을 경우에는 상기 비교기(CO)의 정(+)측 입력단자보다 부(-)측 입력단자의 전압이 낮아지므로 비교기(CO)로 부터는 하이 신호가 출력되고, 이로인해 트랜지스터(Q3)가 도통되므로 트랜지스터(Q2)의 베이스전위가 낮아져 상기 트랜지스터(Q2)는 도통되며, 전원이 트랜지스터(Q1)의 베이스단자로 인가되어 상기 트랜지스터(Q1)도 도통되므로 부하(R1)를 통해 흐르는 전류의 흐름이 증가되어 일정한 전류를 유지시켜 주게 된다.Accordingly, the comparator CO compares a constant reference voltage set at the positive (+) input terminal with a proportional voltage according to the current I applied to the negative (-) input terminal, and according to the output of the comparator CO The switching transistors Q 1 to Q 3 are turned on and off. When the constant current output is less than the set current, the voltage at the negative input terminal is lower than the positive input terminal of the comparator CO. since a high signal is output starting with the comparator (CO), because of this transistor (Q 3) is conductive, so is the base potential of the transistor (Q 2) the conduction is low the transistor (Q 2), the power transistor (Q 1) Since the transistor Q 1 is also connected to the base terminal of the transistor, the current flowing through the load R 1 is increased to maintain a constant current.

정전류 출력이 설정전류보다 많을 경우에는 비교기(CO)로 부터 로우신호가 출력되어 트랜지스터(Q3)의 베이스단자에 바이어스 전압을 걸어주지 못하므로 트랜지스터(Q3)는 오프되고, 따라서 트랜지스터(Q2,Q1)도 모두 오프되므로 부하(R1)를 통해 흐르는 전류(I)의 흐름이 감소되어 일정한 전류를 유지시켜 주게 된다.If a constant current output is higher than the setting current, the comparator is a low signal is output from the (CO), so can not not walk a bias voltage to the base terminal of the transistor (Q 3) transistor (Q 3) is turned off, and thus the transistor (Q 2 Since Q 1 ) is also turned off, the flow of current I flowing through the load R 1 is reduced to maintain a constant current.

이와 같은 본 고안은 전류의 양을 위드백하여 그 양에 따라 스위칭 레귤레이터를 동작시켜 열 손실을 줄이고 정 전류원을 얻게한 것이다.This invention devises the amount of current to operate the switching regulator according to the amount to reduce the heat loss and obtain a constant current source.

Claims (1)

트랜지스터(Q1)의 콜렉터 에미터 사이에 다이오드(D1)를 연결하여 이의 에미터 단자에 인덕턴스(L)를 통해 정전류 출력단자(IO1)에 연결하고 트랜지스터(Q1)의 베이스단자에서 트랜지스터(Q2)의 콜렉터를 직결하고 또한 저항(R1)을 통해 트랜지스터(Q1)의 에미터 측에 직결하며 다이오드(D2)를 통해 접지시키고 전원 입력단자(Vc)에서 트랜지스터(Q1,Q2)의 콜렉터 에미터에 직결하며 저항(R2)을 통해 트랜지스터(Q2)의 베이스측에 연결하며 저항(R3)을 통해 단자점(a)에 접속하고 트랜지스터(Q2)의 베이스측 단자에서 저항(R4)을 통해 트랜지스터(Q3)의 콜렉터에 연결하고 정 전류 출력단자(IO2)에서 저항(Rf)과 가변저항(VR1) 및 저항(R5)을 연결하여 접지시키고 정 전류 출력단자(IO1)에서 콘덴서(C2)를 거쳐 접지시키고 가변저항(VR1)의가변단자에서 저항(R6)을 거쳐 비교기 (CO)의 부(-)측 입력단자에 직결하고 저항(R7)을 거쳐 단자점(a)에 연결하고 비교기(CO)의 정(+)측 입력 단자와 출력단자에서 저항(R8, R11)을 통해 단자점(a)에 연결하고 휘드백 저항(R9)을 연결하고 비교기(CO)의 정(+)측 입력단자에 저항(R10)을 통해 접지시키고 또한 출력단자에 트랜지스터(Q3)의 바이어스 저항(R12)을 연결하며 트랜지스터(Q3)의 에미터를 접지시키고 단자점(a)에서 콘덴서(C1)와 제너다이오드(ZD)를 병렬로 연결하여서 된 것을 특징으로 하는 정 전류용 스위칭 레귤레이터.A diode D 1 is connected between the collector emitters of the transistor Q 1 and connected to the constant current output terminal IO 1 through an inductance L at its emitter terminal and a transistor at the base terminal of the transistor Q 1 . Directly connect the collector of (Q 2 ) and directly to the emitter side of transistor (Q 1 ) through resistor (R 1 ), ground through diode (D 2 ), and transistor (Q 1 ) at power input (V c ) , Q 2 ) directly connected to the collector emitter, connected to the base side of transistor Q 2 through resistor R 2 , connected to terminal point a through resistor R 3 , and connected to transistor Q 2 . in the base-side terminal via a resistor (R 4) connected to a collector of the transistor (Q 3), and the resistance in the constant current output terminal (IO 2) (R f) and connected to a variable resistor (VR 1) and a resistor (R 5) to ground and a constant current output terminal grounded via a capacitor (C 2) in (IO 1) and a variable of the variable resistor (VR 1) Via a resistor (R 6) on the chair unit of the comparator (CO) (-) connected directly to the input terminal and via a resistor (R 7) connected to a terminal point (a) and positive (+) side input of the comparator (CO) resistance (R 8, R 11) connected to a terminal point (a) through and connected to the bend feedback resistance (R 9) and against the positive (+) side input terminal of the comparator (CO) (R 10 in the terminal and an output terminal Ground) and connect the bias resistor (R 12 ) of transistor (Q 3 ) to the output terminal, ground the emitter of transistor (Q 3 ), and at the terminal point (a) condenser (C 1 ) and zener diode ( ZD) constant current switching regulator, characterized in that by connecting in parallel.
KR2019850016589U 1985-12-11 1985-12-11 Switching ragulator KR890001725Y1 (en)

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KR2019850016589U KR890001725Y1 (en) 1985-12-11 1985-12-11 Switching ragulator

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KR2019850016589U KR890001725Y1 (en) 1985-12-11 1985-12-11 Switching ragulator

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KR870011410U KR870011410U (en) 1987-07-16
KR890001725Y1 true KR890001725Y1 (en) 1989-04-07

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KR101105223B1 (en) * 2009-04-14 2012-01-13 김근식 The constant current circuit using voltage regulator of curtailment for energy

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