KR970031194A - Power factor correction circuit of boost converter with simple circuit configuration - Google Patents

Power factor correction circuit of boost converter with simple circuit configuration Download PDF

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Publication number
KR970031194A
KR970031194A KR1019950041523A KR19950041523A KR970031194A KR 970031194 A KR970031194 A KR 970031194A KR 1019950041523 A KR1019950041523 A KR 1019950041523A KR 19950041523 A KR19950041523 A KR 19950041523A KR 970031194 A KR970031194 A KR 970031194A
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KR
South Korea
Prior art keywords
signal
voltage
switching transistor
output
sensing unit
Prior art date
Application number
KR1019950041523A
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Korean (ko)
Other versions
KR0170204B1 (en
Inventor
최낙춘
서맹호
Original Assignee
김광호
삼성전자 주식회사
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.)
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950041523A priority Critical patent/KR0170204B1/en
Priority to JP8182459A priority patent/JPH09140145A/en
Priority to US08/748,208 priority patent/US5764039A/en
Publication of KR970031194A publication Critical patent/KR970031194A/en
Application granted granted Critical
Publication of KR0170204B1 publication Critical patent/KR0170204B1/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
    • H02M3/06—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
    • 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
    • H02M3/073—Charge pumps of the Schenkel-type
    • H02M3/078—Charge pumps of the Schenkel-type with means for reducing the back bias effect, i.e. the effect which causes the threshold voltage of transistors to increase as more stages are added to the converters

Abstract

본 발명은 승압형 콘버터의 역률보상회로에 관한 것으로서, 특히 승압형 콘버터의 출력전압의 변동에 따라 레벨이 가감되는 비교기준 전압신호을 발생하는 출력감지부; 스위칭 트랜지스터의 온전류에 대응하는 전압신호를 발생하는 전류 감지부; 출력감지부의 비교기준 전압신호와 상기 전류감지부의 전압신호를 합성하여 비교신호를 발생하는 신호 합성부; 신호 합성부의 비교신호와 역톱니파신호를 비교하여 상기 스위칭 트랜지스터의 오프 제어신호를 발생하는 비교기; 및 역톱니파신호의 상승엣지에 동기한 클럭신호에 응답하여 상기 스위칭 트랜지스터를 턴온시키고 상기 비교기의 오프제어신호에 응답하여 상기 스위칭 트랜지스터를 턴오프시키는 구동부를 구비한 것을 특징으로 한다.The present invention relates to a power factor correction circuit for a boost converter, and in particular, an output sensing unit for generating a reference voltage signal whose level is increased or decreased according to a change in the output voltage of the boost converter; A current sensing unit generating a voltage signal corresponding to the on-current of the switching transistor; A signal synthesizing unit configured to synthesize a comparison reference voltage signal of an output sensing unit and a voltage signal of the current sensing unit to generate a comparison signal; A comparator for comparing the comparison signal and the reverse sawtooth signal of the signal synthesis unit to generate an off control signal of the switching transistor; And a driving unit which turns on the switching transistor in response to a clock signal synchronized with the rising edge of the reverse sawtooth signal and turns off the switching transistor in response to an off control signal of the comparator.

따라서, 본 발명에서는 입력전압의 레벨에 추종하고 입력전압과 동상의 정현파형의 연속전류를 제어할 수 있어서 회로구성이 간단하면서도 고역률을 달성할 수 있다.Therefore, in the present invention, it is possible to follow the level of the input voltage and to control the continuous current of the sinusoidal waveform of the input voltage and the in-phase, thereby achieving a high power factor with a simple circuit configuration.

Description

회로구성이 간단한 승압형 콘버터의 역률 보상 회로Power factor correction circuit of boost converter with simple circuit configuration

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

제 1 도는 본 발명에 의한 회로구성이 간단한 역률 보상회로의 구성을 나타낸 회로도.1 is a circuit diagram showing a configuration of a power factor correction circuit having a simple circuit configuration according to the present invention.

제 2 도는 본 발명에 의한 역률 보상회로의 동작을 설명하기 위한 파형도.2 is a waveform diagram for explaining the operation of the power factor correction circuit according to the present invention.

Claims (2)

스위칭 트랜지스터의 온상태에서 인덕터에 에너지를 축적하고 오프상태에서 인덕터에 축적된 에어지를 입력전원에 중첩시켜서 출력하는 승압형 콘버터의 역률을 보상하는 회로에 있어서, 상기 승압형 콘버터의 출력전압의 변동에 따라 레벨이 가감되는 비교기준 전압신호을 발생하는 출력감지부; 상기 스위칭 트랜지스터의 온전류에 대응하는 전압신호를 발생하는 전류 감지부; 상기 출력감지부의 비교기준 전압신호와 상기 전류감지부의 전압신호를 합성하여 비교신호를 발생하는 신호 합성부; 상기 신호 합성부의 비교신호와 역톱니파신호를 비교하여 상기 스위칭 트랜지스터의 오프 제어신호를 발생하는 비교기; 및 상기 역톱니파신호의 상승엣지에 동기한 클럭신호에 응답하여 상기 스위칭 트랜지스터를 턴온시키고 상기 비교기의 오프제어신호에 응답하여 상기 스위칭 트랜지스터릍 턴오프시키는 구동부를 구비한 것을 특징으로 하는 승압형 콘버터의 역률보상회로.A circuit for compensating for the power factor of a boost converter that accumulates energy in an inductor in an on state of a switching transistor and superimposes the air accumulated in the inductor in an off state to an input power supply, wherein the output voltage of the boost converter is changed. An output detector for generating a comparison reference voltage signal whose level is added or decreased accordingly; A current sensing unit generating a voltage signal corresponding to an on current of the switching transistor; A signal synthesizing unit configured to synthesize a comparison reference voltage signal of the output sensing unit and a voltage signal of the current sensing unit to generate a comparison signal; A comparator for comparing the comparison signal of the signal synthesis unit with an inverse sawtooth signal to generate an off control signal of the switching transistor; And a driving unit which turns on the switching transistor in response to a clock signal synchronized with the rising edge of the reverse sawtooth signal and turns off the switching transistor in response to an off control signal of the comparator. Power factor correction circuit. 제 1 항에 있어서, 상기 출력감지부는 상기 승압형 콘버터의 출력전압을 소정 전압으로 분압하는 분압수단; 상기 분압된 전압신호를 입력하여 상기 출력전압의 변동에 다른 에러전압을 검출하는 에러 증폭기; 및 상기 에러 증폭기에서 출력되는 에러전압을 소정의 기준전압과 합성하여 상기 비교기준 전압신호로 출력하는 레벨 기준수단을 구비하는 것을 특징으로 하는 승압형 콘버터의 역률보상회로.2. The apparatus of claim 1, wherein the output sensing unit comprises: voltage divider for dividing an output voltage of the boost converter to a predetermined voltage; An error amplifier configured to input the divided voltage signal to detect an error voltage different from the variation of the output voltage; And a level reference means for combining the error voltage output from the error amplifier with a predetermined reference voltage and outputting the comparison voltage signal as the reference voltage signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950041523A 1995-11-15 1995-11-15 Power factor compensation circuit for boosting converter KR0170204B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019950041523A KR0170204B1 (en) 1995-11-15 1995-11-15 Power factor compensation circuit for boosting converter
JP8182459A JPH09140145A (en) 1995-11-15 1996-07-11 Boosting converter provided with power-factor compensating circuit
US08/748,208 US5764039A (en) 1995-11-15 1996-11-12 Power factor correction circuit having indirect input voltage sensing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950041523A KR0170204B1 (en) 1995-11-15 1995-11-15 Power factor compensation circuit for boosting converter

Publications (2)

Publication Number Publication Date
KR970031194A true KR970031194A (en) 1997-06-26
KR0170204B1 KR0170204B1 (en) 1999-05-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100448613B1 (en) * 2000-11-10 2004-09-13 엔이씨 일렉트로닉스 가부시키가이샤 Distortion correction circuit and display device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100463158B1 (en) * 1999-06-28 2004-12-23 현대 프라즈마 주식회사 Converter for voltage step-up

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100448613B1 (en) * 2000-11-10 2004-09-13 엔이씨 일렉트로닉스 가부시키가이샤 Distortion correction circuit and display device

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