KR980009890U - Starting timing circuit - Google Patents
Starting timing circuit Download PDFInfo
- Publication number
- KR980009890U KR980009890U KR2019960022674U KR19960022674U KR980009890U KR 980009890 U KR980009890 U KR 980009890U KR 2019960022674 U KR2019960022674 U KR 2019960022674U KR 19960022674 U KR19960022674 U KR 19960022674U KR 980009890 U KR980009890 U KR 980009890U
- Authority
- KR
- South Korea
- Prior art keywords
- timing
- unit
- starting
- circuit
- adjusting
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims description 6
- 239000007858 starting material Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
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
- H02M3/22—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
본 고안은 리세트시에 발생하는 타이밍을 빠르게 기동시켜 기동특성을 개선시키는 기동부와, 콘덴서의 용량을 조절하여 턴온 지연시간을 20㎳이상 구현시키는 콘덴서 용량 조절부로 이루어진 기동 타이밍 개선부에 의해 회로의 구성을 간단하게 함과 동시에 코스트를 절감시킬 수 있게 한 것이다.The present invention provides a circuit comprising a starting timing improving part including a starting part for quickly starting timing occurring during reset to improve starting characteristics and a condenser capacity adjusting part for adjusting turnover delay time of 20 ms or more by adjusting the capacitor capacity. It is possible to simplify the configuration and reduce the cost.
Description
제1도는 종래의 기동 타이밍회로도,1 is a conventional start timing circuit diagram;
제2도는 본 고안에 의한 기동 타이밍회로도이다.2 is a start timing circuit diagram according to the present invention.
*도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
10 : EMI필터부 20 : 정류부 30 : SCR회로부10: EMI filter unit 20: rectifier unit 30: SCR circuit unit
40 : 기동부 50 : 콘덴서 용량 조절부40: starting section 50: capacitor capacity adjusting section
60 : 기동 타이밍 개선부60: start timing improvement unit
본 고안은 SMPS(Switching Mode Power Supply)에서의 기동 타이밍회로에 관한 것으로, 특히 PWM(Pulse Width Modulation)IC를 구동시키는 SCR회로부와, 저항을 삭제하여 회로구성을 간단하게 함과 동시에 리세트시에 발생하는 타이밍을 빠르게 기동시켜 기동특성을 개선시키고, 이와 동시에 보조권선에 연결된 콘덴서 용량을 조정하여 턴온 지연시간(Turn ON Delay Timing)을 20㎳이상 구현시킬 수 있게 하는 기동 타이밍회로에 관한 것이다.The present invention relates to a start timing circuit in a switching mode power supply (SMPS), and more particularly, an SCR circuit unit for driving a pulse width modulation (PWM) IC, a resistor, and a circuit configuration to be simplified and reset at the same time. The present invention relates to a start timing circuit that enables a quick start of timing to improve starting characteristics, and at the same time adjusts the capacitance of a capacitor connected to an auxiliary winding to realize a turn on delay time of 20 ms or more.
종래의 기동 타이밍회로는 제1도에 도시되어 있다. 제1도에 도시한 종래의 기동 타이밍회로는 트랜스(T)의 권선에 유도되는 EMI (electormagnetic)를 필터링하는 EMI필터부(10)와, 필터링된 EMI를 정류시키는 정류부(20)와, 리세트시 기동 타이밍을 실현시키기 위한 SCR회로부(30)로 구성된다.The conventional start timing circuit is shown in FIG. The conventional starting timing circuit shown in FIG. 1 includes an EMI filter unit 10 for filtering an EMI (electormagnetic) induced in a winding of a transformer T, a rectifying unit 20 for rectifying the filtered EMI, and a reset. SCR circuit section 30 for realizing the start-up timing.
이와 같이 구성된 종래의 기동 타이밍회로는 커플링 콘덴서 (C1)와, 정류다이오드(D1) 및 저항(R1), (R2)을 통해 SCR회로부(30)를 초기 구동시키고, SCR회로부가 구동을 시작하면 FET(도면에 도시생략됨)가 구동하여 스위칭시킴으로써 리세트시 기동 타이밍을 실현시킨다.In the conventional start timing circuit configured as described above, the SCR circuit unit 30 is initially driven through the coupling capacitor C 1 , the rectifying diode D 1 , and the resistors R 1 and R 2 . When the drive starts, the FET (not shown in the figure) is driven to switch to realize the start timing at reset.
그런데 이런 종래의 기동 타이밍회로는 저항소자와, SCR회로부를 구성함으로써 이에 따른 회로의 구성이 매우 복잡하고, 또한 코스트를 상승시키는 등 단점이 있다.However, such a conventional start timing circuit has a disadvantage in that the configuration of the circuit is very complicated and the cost is increased by configuring the resistance element and the SCR circuit portion.
본 고안은 상기와 같은 종래의 문제점을 해결하고자 이루어진 것으로서, 그 목적은 PWMIC를 구동시키는 SCR회로부와, 저항을 삭제하여 회로구성을 간단하게 함과 동시에 리세트시에 발생하는 타이밍을 빠르게 기동시켜 기동특성을 개선시키고, 이와 동시에 보조권선에 연결된 콘덴서 용량을 조정하여 턴온 지연시간을 20㎳이상 구현시킬 수 있도록 하는데 있다.The present invention has been made to solve the above-mentioned conventional problems, and its object is to simplify the circuit configuration by removing the resistor and the SCR circuit unit for driving the PWMIC, and to start the timing generated at the time of reset at the same time. It improves the characteristics and at the same time adjusts the capacitance of the capacitor connected to the auxiliary winding to realize a turn-on delay time of more than 20㎳.
상기의 목적을 달성하고자 본 고안은, 리세트시 발생하는 스타트-업 타이밍을 개선시키는 기동타이밍 개선부를 구성한 것이 특징이 있다.In order to achieve the above object, the present invention is characterized in that it comprises a start timing improvement unit for improving the start-up timing occurs during reset.
이를 첨부 도면에 의거하여 본 고안을 상세히 설명하면 다음과 같다.The present invention will be described in detail with reference to the accompanying drawings as follows.
제2도는 본 고안에 의한 기동 타이밍회로로서, 제2도에 도시한 바와 같이, 트랜스(T)의 권선에 유도되는 EMI를 필터링하는 EMI 필터부(10)와, 필터링된 EMI를 정류시키는 정류부(20)사이에 리세트시에 발생하는 스타트-업 타이밍을 개선시키는 기동 타이밍 개선부(600)를 연결하여 구성한 것이다.2 is a start timing circuit according to the present invention, as shown in FIG. 2, an EMI filter unit 10 for filtering EMI induced in a winding of a transformer T, and a rectifying unit for rectifying the filtered EMI ( The start timing improvement unit 600 which connects the start-up timing which occurs at the time of reset between 20 and 20 is connected.
상기 기동 타이밍 개선부(60)는 리세트시에 발생하는 타이밍을 빠르게 기동시켜 기동특성을 개선시키는 기동부(40)와, 콘덴서의 용량을 조절하여 턴온 지연시간을 20㎳이상 구현시키는 콘덴서 용량 조절부(50)로 구성된다.The start timing improving unit 60 adjusts the capacitance of the starter 40 to quickly start the timing generated at the time of resetting to improve the starting characteristics, and to realize the turn-on delay time by adjusting the capacity of the condenser. It consists of a part 50.
상기 기동부(40)는 리세트시 발생하는 스타트-업 타이밍을 빠르게 기동시키는 다이오드(D1)로 구성된다.The starter 40 is composed of a diode D 1 for quickly starting the start-up timing generated during reset.
상기 콘덴서 용량 조절부(50)는 콘덴서의 용량을 조정하는 콘덴서(C3)로 구성된다.The capacitor capacity adjusting unit 50 is composed of a capacitor (C 3 ) for adjusting the capacity of the capacitor.
상기의 구성과 같이, PWMIC를 구동시키는 SCR회로부와, 저항소자를 삭제함으로써 리세트시에 발생하는 스타트-업 타이밍을 기동부(40)내의 직접 다이오드(D1)를 통해 기동시켜 기동특성을 개선시키고, 이와 동시에 콘덴서 용량 조절부(50)내의 보조권선에 연결된 콘덴서(C3)의 용량을 조절하여 턴온 지연시간을 20㎳이상 구현시킨다.As described above, the start-up timing generated at the time of reset by eliminating the resistance element and the SCR circuit section for driving the PWMIC is started through the direct diode D 1 in the starter 40 to improve the start-up characteristics. At the same time, the turn-on delay time is realized by 20 ms or more by adjusting the capacity of the capacitor C 3 connected to the auxiliary winding in the capacitor capacity adjusting unit 50.
이와 같이 본 고안의 SCR회로부와 저항소자를 삭제해 주므로써 회로구성을 간단하게 함과 동시에 코스트를 절감시켰으며, 또한 리세트시에 발생하는 타이밍을 빠르게 기동시켜 기동특성을 개선시키고, 또한 콘덴서의 용량을 조절하여 턴온 지연시간을 20㎳이상 구현시켜 주는 효과가 있다.By eliminating the SCR circuit part and the resistance element of the present invention, the circuit configuration is simplified, the cost is reduced, and the timing generated at the time of reset is quickly started to improve the starting characteristics, and It is effective to realize turn-on delay time more than 20㎳ by adjusting the capacity.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960022674U KR200152725Y1 (en) | 1996-07-30 | 1996-07-30 | Timing circuit for a stating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960022674U KR200152725Y1 (en) | 1996-07-30 | 1996-07-30 | Timing circuit for a stating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR980009890U true KR980009890U (en) | 1998-04-30 |
| KR200152725Y1 KR200152725Y1 (en) | 1999-07-15 |
Family
ID=19462730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960022674U KR200152725Y1 (en) | 1996-07-30 | 1996-07-30 | Timing circuit for a stating |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200152725Y1 (en) |
-
1996
- 1996-07-30 KR KR2019960022674U patent/KR200152725Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR200152725Y1 (en) | 1999-07-15 |
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