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KR930013919A - Pulse Width Control Circuit of Switching Power Supply - Google Patents

Pulse Width Control Circuit of Switching Power Supply Download PDF

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Publication number
KR930013919A
KR930013919A KR1019910023251A KR910023251A KR930013919A KR 930013919 A KR930013919 A KR 930013919A KR 1019910023251 A KR1019910023251 A KR 1019910023251A KR 910023251 A KR910023251 A KR 910023251A KR 930013919 A KR930013919 A KR 930013919A
Authority
KR
South Korea
Prior art keywords
power supply
pulse width
control circuit
width control
output
Prior art date
Application number
KR1019910023251A
Other languages
Korean (ko)
Other versions
KR0172862B1 (en
Inventor
신동명
한경해
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019910023251A priority Critical patent/KR0172862B1/en
Publication of KR930013919A publication Critical patent/KR930013919A/en
Application granted granted Critical
Publication of KR0172862B1 publication Critical patent/KR0172862B1/en

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Dc-Dc Converters (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

본 발명은 입력전원 전압의 변동 및 짧은 순간의 정전시에 스위칭 전원회로를 보호하면서 안정된 출력을 시스템회로에 공급하게 하는 스위칭 전원 장치의 펄스폭 제어회로에 관한 것으로 종래 기술에서는 펄스 발생부(25)에서 최초 공급되는 스위칭 펄스폭은 전류 궤환이 이루어지지 않는 상태에서는 조정이 불가능하고 스위칭 전원 장치의 온타임이 최초에 크게 되어 스위칭 소자 및 트랜스의 전류, 전압치가 규격치 이상이 되어 회로 소자등의 소손이나 파괴를 가져왔으나 본 발명에서는 일정전원을 공급하는 전원부(18)와, 전원부(18)의 피크 전압과 기준 전압을 비교하는 펄스 폭 제어회로(19)와, 펄스 폭 제어회로(19)의 출력과 삼각파 발생기의 출력을 비교하여 펄스를 발생시키는 펄스 발생부(25)와, 펄스 발생부(25)의 출력 레벨에 따라 스위칭 소자(10)의 온타임을 제어하므로 마그네트론(MG)의 출력을 가감시키게 하는 스위칭 소자 구동부(16)를 구비하여 문제점을 해결한 것이다.The present invention relates to a pulse width control circuit of a switching power supply device for supplying a stable output to a system circuit while protecting the switching power supply circuit in the event of fluctuation of an input power supply voltage and a short power failure. The switching pulse width that is supplied for the first time in the circuit cannot be adjusted in the absence of current feedback, and the on-time of the switching power supply becomes large for the first time. In the present invention, the pulse width control circuit 19, the pulse width control circuit 19 for comparing the peak voltage and the reference voltage of the power supply unit 18, and the output of the pulse width control circuit 19 The pulse generator 25 for generating pulses by comparing the output of the triangular wave generator, and the switching element 10 according to the output level of the pulse generator 25. Since controlling the on-time to resolve the problem by including a switching device drive unit (16) for acceleration thereby the output of the magnetrons (MG).

Description

스위칭 전원장치의 펄스 폭 제어 회로.Pulse width control circuit of switching power supply.

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 펄스 폭 제어회로가 구비된 스위칭 전원회로의 예시도,2 is an exemplary diagram of a switching power supply circuit having a pulse width control circuit of the present invention;

제4도는 본 발명의 마그네트론 동작 특성도,4 is a magnetron operating characteristic diagram of the present invention,

제6도는 본 발명의 스위칭 소자측의 동작 상태 파형도,6 is an operational state waveform diagram of the switching element side of the present invention;

제8도는 본 발명의 다른 실시예를 나타낸 구성도.8 is a block diagram showing another embodiment of the present invention.

Claims (2)

AC전원 입력단에 접속되어 일정 직류 전원을 공급하는 전원부(18)와, 상기 전원부(18)로 부터의 피크 전압을 검출하여 기준 전압과 비교하는 펄스 폭 제어회로(19)와, 상기 펄스 폭 제어회로(19)의 출력과 삼각파발생기의 출력을 비교하여 펄스를 발생시키는 펄스 발생부(25)와, 상기 펄스발생부(25)의 출력레벨에 따라 스위칭 소자(10)의 온타임을 제어하므로 마그네트론(MG)의 출력을 가감시키게 하는 스위칭 소자구동부(16)를 구비하여서 이루어진 스위칭 전원장치의 펄스 폭 제어회로.A power supply unit 18 connected to an AC power input terminal for supplying a constant DC power supply, a pulse width control circuit 19 for detecting a peak voltage from the power supply unit 18 and comparing it with a reference voltage, and the pulse width control circuit; By comparing the output of the (19) and the output of the triangular wave generator to generate a pulse and the on-time of the switching element 10 in accordance with the output level of the pulse generator 25 to control the magnetron ( A pulse width control circuit of a switching power supply device, comprising a switching element driver (16) for regulating the output of MG. 제1항에 있어서, 전원부(18)와 펄스 폭 제어회로(19)사이에 상기 전원부 (18)로 부터의 교류 맥류를 검출하는 맥류 검출부를 구비하여서 이루어진 스위칭 전원장치의 펄스 폭 제어회로.2. The pulse width control circuit of a switching power supply device according to claim 1, further comprising a pulse flow detection section for detecting an alternating pulse flow from the power supply section (18) between the power supply section (18) and the pulse width control circuit (19). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910023251A 1991-12-17 1991-12-17 Circuit for controlling the pulse width of switching source KR0172862B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910023251A KR0172862B1 (en) 1991-12-17 1991-12-17 Circuit for controlling the pulse width of switching source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910023251A KR0172862B1 (en) 1991-12-17 1991-12-17 Circuit for controlling the pulse width of switching source

Publications (2)

Publication Number Publication Date
KR930013919A true KR930013919A (en) 1993-07-22
KR0172862B1 KR0172862B1 (en) 1999-03-30

Family

ID=19325035

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910023251A KR0172862B1 (en) 1991-12-17 1991-12-17 Circuit for controlling the pulse width of switching source

Country Status (1)

Country Link
KR (1) KR0172862B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101413173B1 (en) * 2012-12-14 2014-07-21 주식회사 파세코 Control Device Electric Power for Electric Range

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101413173B1 (en) * 2012-12-14 2014-07-21 주식회사 파세코 Control Device Electric Power for Electric Range

Also Published As

Publication number Publication date
KR0172862B1 (en) 1999-03-30

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