KR100665454B1 - Switching control regulator circuit for generating of stability voltage - Google Patents

Switching control regulator circuit for generating of stability voltage Download PDF

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KR100665454B1
KR100665454B1 KR1020060050254A KR20060050254A KR100665454B1 KR 100665454 B1 KR100665454 B1 KR 100665454B1 KR 1020060050254 A KR1020060050254 A KR 1020060050254A KR 20060050254 A KR20060050254 A KR 20060050254A KR 100665454 B1 KR100665454 B1 KR 100665454B1
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voltage
output
generator
constant
circuit
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KR1020060050254A
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Korean (ko)
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장기석
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(주)태진기술
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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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/205—Substrate bias-voltage generators
    • 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
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection

Abstract

A constant voltage generating circuit is provided to maintain a constant voltage against the variation of an input voltage or load by using an internal bipolar transistor to decrease an output voltage, when a peripheral temperature rises. A reference voltage generator(100) generates an input voltage within a predetermined voltage range by using a voltage dividing circuit. An excessive load protecting circuit(300) switches on/off an output voltage to remove an excessive load, when an excessive current is generated at an output terminal of the reference voltage generator. A differential amplifier(200) includes a reference generator and an error amplifying stage, which differential-amplifies a feedback voltage and flattens the amplified result. A bias voltage generator(400) is coupled with the excessive load protecting unit and the differential amplifier, generates a predetermined bias voltage, and absorbs a noise. A remote sense output adjuster(500) stabilizes the output voltage, which is applied from the excessive load generator, and outputs a constant voltage. The remote sense output adjuster includes a pass element, which only delivers a stable voltage to the selected interface, and outputs a constant voltage.

Description

스위칭 제어 정전압 발생회로{Switching control regulator circuit for generating of stability voltage}Switching control regulator circuit for generating of stability voltage

도 1은 본 발명에 의한 정전압 발생 회로도.1 is a constant voltage generation circuit diagram according to the present invention.

＜도면의 부요부분에 대한 부호의 설명＞<Explanation of symbols for important parts of drawing>

21 : 참조 제너레이트 22 : 에러 증폭단21: Reference generation 22: Error amplifier stage

31 : 서멀 다운단 32 : 스위칭 제어단31: thermal down stage 32: switching control stage

41 : 바이어스 회로단 42 : 게이트 드라이브 회로단41: bias circuit stage 42: gate drive circuit stage

51 : 패스엘레먼트 100 : 기준전압발생부51: pass element 100: reference voltage generator

200 : 차동증폭부 300 : 과부하보호부200: differential amplifier 300: overload protection

400 : 바이어스 전압 발생부 500 : 원격감지출력조절부400: bias voltage generator 500: remote sensing output control unit

본 발명은 입력되어지는 낮은 노이즈 전압을 증폭시켜 제거하는 정전압 발생회로에 관한 것으로, 특히 입력전압의 변동이나 온도 및 부하의 변동에 상관없이 안정된 전압레벨로 스위칭 제어 할 수 있도록 한 스위칭 제어 정전압 발생회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant voltage generator circuit that amplifies and removes a low noise voltage input. Particularly, a switching control constant voltage generator circuit enables switching control to a stable voltage level regardless of fluctuations in input voltage, temperature, or load. It is about.

일반적으로 정전압 회로는 각종 전자제품의 전원장치에 있어서, 안정된 전원 레벨을 확보하기 위해 기본적으로 필요한 회로로서 단일 소자로서 제품화되어 거의 모든 저전압 전원 회로에 사용되고 있다.In general, constant voltage circuits are basically necessary circuits for securing a stable power level in power supply devices of various electronic products and are commercialized as a single element and are used in almost all low voltage power supply circuits.

최근 들어 정전압 발생회로는 단일 소자로서 패키지화되어 제공되고 있는데, 통상 전원 입력단자인 기준전압단자(Ref)와 정전압 출력단자인 캐소드, 애노드단자가 구비된 3핀 소자로서 제품화되어 있다.Recently, the constant voltage generation circuit has been packaged and provided as a single device, and has been commercialized as a 3-pin device having a reference voltage terminal Ref, which is a power input terminal, a cathode, and an anode terminal, which are constant voltage output terminals.

그런데, 기존 정전압 소자는 입력전원 레벨에 의해 출력레벨을 조절하는 범위가 제한적이고, 외부전압 변동 시 내부회로의 바이어스 안정성이 떨어질 수 있다는 문제점이 있었다.However, the conventional constant voltage device has a problem in that the range of adjusting the output level by the input power level is limited, and the bias stability of the internal circuit may decrease when an external voltage is changed.

따라서, 상기와 같은 문제점을 해결하기 위해 안출된 본 발명의 목적은 입력되어지는 낮은 노이즈 전압을 증폭시켜 제거 할 수 있는 스위칭 제어 정전압 발생회로를 제공함에 있다.Accordingly, an object of the present invention devised to solve the above problems is to provide a switching control constant voltage generation circuit capable of amplifying and removing a low noise voltage to be input.

또한, 정전압 회로에서 이상 부하나 높은 온도가 출력되면 자동으로 출력전압을 떨어뜨려 안정된 정전압을 출력 할 수 있도록 스위칭 제어를 통하여 전력 효율을 향상시키고, 차동증폭회로의 출력을 평활시키며, 바이어스 전압 발생 회로를 안정화시켜 일정한 출력 레벨을 얻을 수 있도록 하기 위한 스위칭 제어 정전압 발생회로를 제공함에 있다.In addition, when abnormal load or high temperature is output from the constant voltage circuit, the output voltage is improved by switching control to automatically drop the output voltage and output a stable constant voltage, smooth the output of the differential amplifier circuit, and bias voltage generator circuit. The present invention provides a switching control constant voltage generation circuit for stabilizing the circuit to obtain a constant output level.

이와 같은 목적을 달성하기 위한 본 발명의 스위칭 제어 정전압 발생회로는, 입력되어지는 낮은 노이즈 전압을 증폭시켜 제거하는 스위칭 제어 정전압 발생 회로에 관한 것으로, 입력전압을 트랜지스터와 트리밍 저항에 의해 전압분배 회로로서 기준전압을 발생하는 기준전압발생부와, 상기 기준전압발생부의 출력에 어느 이상의 부하가 흐르거나 높은 온도가 흐르면 출력전압을 스위칭 제어하여 과부하를 제거하는 과부하보호부와, 외부 및 피드백된 전압을 차동증폭하고 출력을 평활시키는 차동증폭부와, 상기 과부하보호부와 상기 차동증폭부에 연동하여 소정의 바이어스 전압을 발생하여 잡음을 흡수 제거하여 안정화시키는 바이어스 전압 발생부 및 상기 과부하보호부에서 입력된 출력전압의 정확성을 높이고 안정화시켜 일정한 레벨의 정전압을 출력하는 원격감지출력조절부로 구성됨을 특징으로 한다.The switching control constant voltage generation circuit of the present invention for achieving the above object relates to a switching control constant voltage generation circuit for amplifying and removing the low noise voltage inputted, the input voltage as a voltage distribution circuit by a transistor and a trimming resistor. Differential between the reference voltage generator for generating a reference voltage, the overload protection unit for removing the overload by switching the output voltage when the load or high temperature flows to the output of the reference voltage generator; A differential amplifier for amplifying and smoothing the output, a bias voltage generator for generating a predetermined bias voltage in conjunction with the overload protection unit and the differential amplifier to absorb and stabilize noise, and an output input from the overload protection unit Constant voltage at constant level by increasing and stabilizing voltage accuracy And outputting the detected remote control adapted to the output characteristics.

이하 본 발명의 실시예를 첨부된 도면을 참조해서 상세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 정전압 발생회로도이다.1 is a constant voltage generation circuit diagram according to the present invention.

도 1을 참조하면, 본 발명은 입력되어지는 낮은 노이즈 전압을 증폭시켜 제거하는 스위칭 제어 정전압 발생회로에 관한 것으로, 입력전압을 트랜지스터와 트리밍 저항에 의해 전압분배 회로로서 기준전압을 발생하는 기준전압발생부(100)와, 상기 기준전압발생부(100)의 출력에 어느 이상의 부하가 흐르거나 높은 온도가 흐르면 출력전압을 스위칭 제어하여 과부하를 제거하는 과부하보호부(300)와, 외부 및 피드백된 전압을 차동증폭하고 출력을 평활시키는 차동증폭부(200)와, 상기 과부하보호부(300)와 상기 차동증폭부(200)에 연동하여 소정의 바이어스 전압을 발생하여 잡음을 흡수 제거하여 안정화시키는 바이어스 전압 발생부(400), 및 상기 과 부하보호부(300)에서 입력된 출력전압의 정확성을 높이고 안정화시켜 일정한 레벨의 정전압을 출력하는 원격감지출력조절부(500)로 구성되어 있다.Referring to FIG. 1, the present invention relates to a switching control constant voltage generator circuit that amplifies and removes a low noise voltage inputted therein, wherein a reference voltage generator generates a reference voltage as a voltage divider circuit by a transistor and a trimming resistor. Overload protection unit 300 to remove the overload by switching the output voltage when the load of more than one load or high temperature flows to the output of the reference unit 100, the reference voltage generator 100, external and feedback voltage Differential amplification and differential amplification and smoothing the output, the bias voltage to generate a predetermined bias voltage in conjunction with the overload protection unit 300 and the differential amplification unit 200 to absorb and remove noise to stabilize Remote sense to output a constant level constant voltage by increasing and stabilizing the accuracy of the output voltage input from the generator 400 and the overload protection unit 300 The output power control unit 500 is configured.

여기서, 상기 기준전압발생부(100)는 초기 전압 신호를 입력받는 연계된 회로부로 분배하며 전압 및 전류를 범위내로 기준 전압을 설정하는 것이 바람직하다.Here, the reference voltage generator 100 distributes the initial voltage signal to the associated circuit unit, and preferably sets the reference voltage within a range of voltage and current.

상기 차동증폭부(200)는 트랜지스터(미도시)의 콜렉터 전압과 베이스 전압이 정전압을 얻기 위하여 같은 값이 되도록 설정하는 참조 제너레이트(21)와, 상기 참조 제너레이트(21)의 출력 기준전압과 전압분배 회로의 출력 전압을 비교하여 출력신호에서 오차 발생부분을 증폭시키는 에러증폭단(22)으로 구성되어 있다.The differential amplifier 200 includes a reference generator 21 for setting a collector voltage and a base voltage of a transistor (not shown) to be the same value to obtain a constant voltage, and an output reference voltage of the reference generator 21. It consists of an error amplifier stage 22 which compares the output voltage of the voltage distribution circuit and amplifies the error generating part of the output signal.

상기 과부하보호부(300)는 다수의 트랜지터, 다이오드, 저항을 포함하여 상기 기준전압발생부(100)에서 발생한 신호를 비교하여 평소에는 동작하지 않으나 과부하나 일정 온도보다 높아지면 동작하여 출력전압을 떨어뜨리기 위한 서멀다운단(31)과, 상기 서멀다운단(31)의 신호를 안정화시켜 출력 인터페이스로 전송하는 스위칭제어단(32)으로 구성되어 있다.The overload protection unit 300 compares signals generated by the reference voltage generator 100 including a plurality of transistors, diodes, and resistors, but does not operate normally. The thermal down stage 31 for dropping and the switching control stage 32 which stabilizes the signal of the said thermal down stage 31, and transmits it to an output interface are comprised.

상기 바이어스 전압 발생부(400)는 기준전압발생부(100)의 출력 기준전압과 일정폭의 차이를 갖는 신호를 발생하는 바이어스회로단(41)과, 상기 바이어스회로단(41)의 출력인 차이 신호를 흡수 제거하여 안정화시켜 정상 레벨로 맞춰 주는 게이트 드라이브회로단(42)으로 구성되어 있다.The bias voltage generator 400 is a bias circuit stage 41 for generating a signal having a difference between the output reference voltage of the reference voltage generator 100 and a predetermined width, and a difference that is the output of the bias circuit stage 41. It consists of a gate drive circuit stage 42 that absorbs and stabilizes the signal and adjusts it to a normal level.

상기 원격감지출력조절부(500)는 상기 게이트 드라이브회로단(42)에 의해 선택되어진 인터페이스로 안정전압만을 통과시키는 패스엘레먼트(51)을 구비하여 일정한 레벨의 정전압을 출력하게 된다. 또한, 원격 부하 감지출력으로 인한 선저항 의 보상을 하여 정확한 전압 전달을 하게 된다.The remote sensing output control unit 500 includes a pass element 51 for passing only a stable voltage to an interface selected by the gate drive circuit stage 42 to output a constant level constant voltage. In addition, accurate voltage transfer is achieved by compensating for line resistance due to remote load sensing output.

여기서, 정전압 발생회로의 출력전압이 기준전압발생부(100)을 통하여 참조 제너레이트(21)의 출력 기준전압과 비교되며, 상기 비교된 신호에서 발생되는 오차가 에러증폭단(22)을 통하여 증폭이 된다.Here, the output voltage of the constant voltage generator circuit is compared with the output reference voltage of the reference generator 21 through the reference voltage generator 100, and an error generated in the compared signal is amplified by the error amplifier stage 22. do.

상기 패스엘레먼트(51)를 통과하여 펄스파형으로 출력되며, 여기서 발생하는 오차를 제거하여 안정된 정전압 신호를 발생하는 것이다.Passed through the pass element 51 is output as a pulse waveform, to generate a stable constant voltage signal by eliminating the error generated here.

이상에서 상세히 설명한 바와 같이, 본 발명은 기준전압 발생부 이외에 바이어스 전압 발생부를 더 구성하여 차동증폭부의 바이어스를 제어하도록 함으로써 더욱 안정적인 정전압을 발생시킬 수 있고, 서멀다운단을 구비하여 정전압회로의 온도가 올라가면 내부 바이폴라 트랜지스터가 동작하여 출력전압을 떨어뜨리는 작용하여 온도보호기능을 하게 되며, 입력변동이나 부하변동등에서도 안정된 정전압을 유지할 수 있는 효과가 있다. 또한, 빠른 응답성을 가지고, 낮은 출력 다이나믹 출력 임피던스, 낮은 출력 노이즈를 가지게 되는 효과가 있다.As described in detail above, the present invention can generate a more stable constant voltage by further configuring the bias voltage generating unit in addition to the reference voltage generating unit to control the bias of the differential amplifier, and has a thermal down stage so that the temperature of the constant voltage circuit When it goes up, the internal bipolar transistor operates to drop the output voltage, which protects the temperature. It also has the effect of maintaining a stable constant voltage even under input or load fluctuations. In addition, there is an effect of having a quick response, low output dynamic output impedance, low output noise.

Claims (7)

스위칭 제어 정전압 발생회로에 있어서,In the switching control constant voltage generating circuit, 입력전압을 트랜지스터와 트리밍 저항에 의해 전압분배 회로로서 전압 및 전류를 범위내로 설정하거나 발생시키기 위한 기준전압발생부와;A reference voltage generator for setting or generating an input voltage as a voltage distribution circuit by a transistor and a trimming resistor within a range; 상기 기준전압발생부의 출력에 어느 이상의 부하가 흐르거나 높은 온도가 흐르면 출력전압을 스위칭 제어하여 과부하를 제거하는 과부하보호부와;An overload protection unit for controlling an output voltage to remove an overload when a load or a high temperature flows through the output of the reference voltage generator; 트랜지스터의 콜렉터 전압과 베이스 전압이 정전압을 얻기 위하여 같은 값이 되도록 설정하는 참조 제너레이트와, 상기 참조 제너레이트의 출력 기준전압과 전압분배 회로의 출력 전압을 비교하여 출력신호에서 오차 발생부분을 증폭시키는 에러증폭단으로 구성되어 외부 및 피드백 된 전압을 차동증폭하고 출력을 평활시키는 차동증폭부와;Amplifying the error generating part of the output signal by comparing the reference generator which sets the collector voltage and the base voltage of the transistor to be the same value to obtain a constant voltage, and the output reference voltage of the reference generator and the output voltage of the voltage division circuit. A differential amplifier configured to comprise an error amplifier stage for differentially amplifying external and feedback voltages and smoothing the output; 상기 과부하보호부와 상기 차동증폭부에 연동하여 소정의 바이어스 전압을 발생하여 잡음을 흡수 제거하여 안정화시키는 바이어스 전압 발생부; 및A bias voltage generator for generating a predetermined bias voltage in conjunction with the overload protection unit and the differential amplifier to absorb and remove noise to stabilize the bias voltage generator; And 상기 과부하보호부에서 입력된 출력전압의 정확성을 높이고 안정화시켜 일정한 레벨의 정전압을 출력시키기 위하여 하는 원격감지출력조절부를 포함하되,It includes a remote sensing output control unit for outputting a constant voltage of a constant level by increasing and stabilizing the accuracy of the output voltage input from the overload protection unit, 상기 원격감지출력조절부는 게이트 드라이브회로단에 의해 선택되어진 인터페이스로 안정전압만을 통과시키는 패스엘레먼트를 구비하여 일정한 레벨의 정전압을 출력시키는 것을 특징으로 하는 스위칭 제어 정전압 발생회로.And the remote sensing output control unit has a pass element for passing only a stable voltage to an interface selected by the gate drive circuit stage, and outputs a constant voltage of a constant level. 삭제delete 삭제delete 제 1항에 있어서,The method of claim 1, 상기 과부하보호부는 트랜지터, 다이오드 및 저항을 포함하여 기준전압발생부에서 발생한 신호를 비교하여 평소에는 동작하지 않으나 과부하나 일정 온도보다 높아지면 동작하여 출력전압을 떨어뜨리기 위한 서멀다운단과;The overload protection unit includes a transistor, a diode, and a resistor, and compares signals generated by the reference voltage generator, and does not operate normally, but operates when the overload or the temperature rises above a predetermined temperature to reduce the output voltage; 상기 서멀다운단의 신호를 안정화시켜 출력 인터페이스로 전송하는 스위칭제어단으로 구성된 것을 특징으로 하는 스위칭 제어 정전압 발생회로.And a switching control stage configured to stabilize the signal of the thermal down stage and transmit the stabilization signal to an output interface. 제 1항에 있어서,The method of claim 1, 상기 바이어스 전압 발생부는 기준전압발생부의 출력 기준 전압과 일정폭의 차이를 갖는 신호를 발생하는 바이어스회로단과;The bias voltage generator comprises: a bias circuit stage for generating a signal having a predetermined width difference from an output reference voltage of the reference voltage generator; 상기 바이어스회로단의 출력인 차이 신호를 흡수 제거하여 안정화시켜 정상 레벨로 맞춰 주는 게이트 드라이브회로단으로 구성된 것을 특징으로 하는 스위칭 제어 정전압 발생회로.And a gate drive circuit stage configured to absorb and stabilize a difference signal, which is an output of the bias circuit stage, to stabilize and adjust the difference signal to a normal level. 삭제delete 제 1항에 있어서,The method of claim 1, 상기 원격감지출력조절부는 원격 부하 감지 출력으로 인한 선저항을 보상하여 정확하게 전압을 전달하는 것을 특징으로 하는 스위칭 제어 정전압 발생회로.The remote sensing output control unit is a switching control constant voltage generating circuit, characterized in that to accurately transfer the voltage by compensating the line resistance due to the remote load sensing output.
KR1020060050254A 2006-06-05 2006-06-05 Switching control regulator circuit for generating of stability voltage KR100665454B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100900267B1 (en) 2007-08-06 2009-05-29 (주)태진기술 Sub-1v output voltage regulator of ultra low dropout type
KR101059901B1 (en) * 2007-09-11 2011-08-29 가부시키가이샤 리코 Constant voltage circuit
CN110350905B (en) * 2018-04-03 2024-04-19 中国科学院声学研究所 MEMS capacitive accelerometer interface circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100900267B1 (en) 2007-08-06 2009-05-29 (주)태진기술 Sub-1v output voltage regulator of ultra low dropout type
KR101059901B1 (en) * 2007-09-11 2011-08-29 가부시키가이샤 리코 Constant voltage circuit
US8054052B2 (en) 2007-09-11 2011-11-08 Ricoh Company, Ltd. Constant voltage circuit
CN110350905B (en) * 2018-04-03 2024-04-19 中国科学院声学研究所 MEMS capacitive accelerometer interface circuit

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