JPS60190165A - Power source - Google Patents
Power sourceInfo
- Publication number
- JPS60190165A JPS60190165A JP4624484A JP4624484A JPS60190165A JP S60190165 A JPS60190165 A JP S60190165A JP 4624484 A JP4624484 A JP 4624484A JP 4624484 A JP4624484 A JP 4624484A JP S60190165 A JPS60190165 A JP S60190165A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- reference voltage
- capacitor
- power supply
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
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
- H02M3/10—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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、安定他心流電Ｌ［を必要とする種々の機器に
電源を供給するためのスイッチング型の電源ｔｉ 回に
関するしのである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a switching type power supply for supplying power to various devices requiring stable cardiac current L.
従来例の構成とその問題点
従来のチョッパ型のスイッチング電源部よ、回路が簡易
で、小型化である反面、第１図のように、スイッチング
素子であるトランジスタ（ＪＪ、下ＳＷ・Ｔ「と略す）
１が電流を断続づるためのノイズ、コイル３からの漏れ
磁束によるノイズにより、回路動作が不安定で、効率の
低下や発熱の原因となっている。The configuration of the conventional example and its problems Although the conventional chopper-type switching power supply unit has a simple and compact circuit, as shown in Fig. omitted)
Noise caused by the intermittent current flowing through the coil 1 and noise caused by leakage magnetic flux from the coil 3 make the circuit operation unstable, causing a decrease in efficiency and heat generation.
さらに、電源投入時は、平滑コンデンサ４をピロボルト
から充電しなければならず、５Ｗ−Ｔｒｌやコイル３に
過大電流が長時間流れ、素子の信頼性を低下させるとと
もに、定格の大きなＳＷ・Ｔｒやコイルを使用しなくて
はならず、回路の小形化が十分にできなかつた。Furthermore, when the power is turned on, the smoothing capacitor 4 must be charged from pyrovolts, and an excessive current flows through the 5W-Trl and the coil 3 for a long time, reducing the reliability of the element. Since a coil had to be used, the circuit could not be made sufficiently compact.
発明の目的
本発明は、１個のコンデンサーを電圧比較部の基準電圧
入力端に付加することにより、ノイズによる基準電圧の
変動を防ぎ、電源投入時のりｒｌＩ−電Ｈの上昇をゆる
やかなものにして過大電流がＳＷ・１−ｊ゛やコイルに
流れるのを防いで、前記問題点をＷ？消しようとづ−る
ものである。Purpose of the Invention The present invention adds one capacitor to the reference voltage input terminal of the voltage comparator to prevent fluctuations in the reference voltage due to noise and to slow down the rise in RlI-H when the power is turned on. This prevents excessive current from flowing to SW・1-j゛ and the coil, and solves the above problem. It's something I try to erase.
発明の構成
本発明は、上記目的を達成するために、非安定直流電源
部と、その非安定直流電源部からの電流をｒＦ＋ Ｎｊ
ｃするスイッチング素子と、そのスイッチング素子の出
力端にカソードを接続しアースにアノードを接続したダ
イオードと、一端をスイッチング素子の出力端に接続し
、他端とアース間に平滑コンデンＶを接続し、その端子
を安定直流出力端子としたコイルと、安定化直流用ノコ
電圧と基準電圧とを比較して、出力電圧の安定化を図る
ために、スイッチング素子を制御するように接続した電
圧比較部と、その電圧比較部の基準電圧入力端に（ｌ加
されたコンデンサを有り゛る構成としたものである。Structure of the Invention In order to achieve the above object, the present invention provides an unstable DC power supply section and a current from the unstable DC power supply section to rF+Nj.
c, a diode whose cathode is connected to the output end of the switching element, and an anode connected to the ground, one end of which is connected to the output end of the switching element, and a smoothing capacitor V connected between the other end and the ground, A coil whose terminal is used as a stable DC output terminal, and a voltage comparator connected to control a switching element in order to compare the stabilized DC saw voltage with a reference voltage and stabilize the output voltage. , the reference voltage input terminal of the voltage comparator section has a capacitor added to it.
実施例の説明
以下本発明の一実施例を図面に基づいて説明する。第２
図は回路図、第３図は各部の波型図を示づ。第２図にお
いて、交流電圧はダイオードブリッジ２１とコンデンサ
２２により整流、平滑される。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Second
The figure shows a circuit diagram, and FIG. 3 shows a waveform diagram of each part. In FIG. 2, the AC voltage is rectified and smoothed by a diode bridge 21 and a capacitor 22.
２３はツェナーダイオードＤｚで、抵抗２４と其に制御
用電源を構成する。コンパレータ２５はｌ） ｚ２３の
出力を抵抗２６．２７で分圧し、該抵抗２６．２７の接
点に接続されるコンデンサ３３によりその電圧変化に時
定数を与えた基準電圧ｖｒと、電源装置の出力電圧ｖＯ
とを比較し、出力電圧ＶＯがＩｆ電圧Ｖｒを下まわると
ドライブ１−ランジスタＤ−Ｔｒ２８を働かせ、ＳＷ・
■ｒ２９をＡンにして、入力側からＳ出力側にエネルギ
ーを供給し、出力電圧ｖＯが基準電圧Ｖｒを上まわると
、ＳＷ・−ｒｒ２９をオフさせ、エネルギー供給を断つ
ように働く。23 is a Zener diode Dz, which together with the resistor 24 constitutes a control power source. The comparator 25 is a reference voltage vr obtained by dividing the output of z23 by a resistor 26.27 and giving a time constant to the voltage change by a capacitor 33 connected to the contact of the resistor 26.27, and the output voltage of the power supply device. vO
When the output voltage VO becomes lower than the If voltage Vr, the drive 1-transistor D-Tr28 is activated and the SW.
(2) Turn r29 to A to supply energy from the input side to the S output side, and when the output voltage vO exceeds the reference voltage Vr, the SW-rr29 is turned off and the energy supply is cut off.
このとき、５ＶＩＴｒ２９による回路電流１ｃの断続お
よび電流１ｃによるコイル３０からの漏れ磁束により、
抵抗２６．２７にノイズ電圧が発生して、す準電圧Ｖｒ
を狂わせ、回路動作を不安定にしようとするが、ノイズ
はコンデ・ンサ３３に吸収されてしまい、基準電圧Ｖｒ
は安定で、狂うことはない。At this time, due to the intermittent circuit current 1c due to the 5VITr 29 and leakage magnetic flux from the coil 30 due to the current 1c,
A noise voltage is generated in the resistors 26 and 27, and the quasi voltage Vr
However, the noise is absorbed by the capacitor 33 and the reference voltage Vr
is stable and never goes crazy.
更に、電源投入とともに、［）ｚ２３の出力電圧はすぐ
に確立するが、基準電圧Ｖｒは抵抗２６．２７とコンデ
ンサ−３３とで決まる時定数で、徐々に立上る。Further, when the power is turned on, the output voltage of [)z23 is established immediately, but the reference voltage Vr gradually rises with a time constant determined by the resistor 26, 27 and the capacitor 33.
従って、第３図に示すように、出力電圧ＶＯは徐々に−
［Ｒし、そのため、ＳＷ”Ｔｒ２９の回路電流ｌｃ１コ
イル３０の電流１ｃ１の値は低く、発熱は少ない、短時
間の断続となって、素子の定格を越えることはないよう
に出来る。Therefore, as shown in FIG. 3, the output voltage VO gradually decreases to -
Therefore, the value of the circuit current lc1 of the SW"Tr 29 and the current 1c1 of the coil 30 is low, generates little heat, and is intermittent for a short time, so that it does not exceed the rating of the element.
発明の効果
以上の説明から明らかなように、本発明の電源装置によ
れば、１個のコンデンサを電圧比較部の基準電圧入力端
に付加するだけで、装置の安定度と効率の向上、発熱の
低減、低い定格の素子の使用と、Ｍ Ｉｆの小形化を可
能とするものである。Effects of the Invention As is clear from the above explanation, according to the power supply device of the present invention, by simply adding one capacitor to the reference voltage input terminal of the voltage comparator, the stability and efficiency of the device can be improved, and heat generation can be reduced. This makes it possible to reduce M If, use elements with low ratings, and downsize M If.
第１図は従来のチョッパ型スイッチング電源装置の一例
を示す回路図、第２図は本発明の電源装置の一実施例の
回路図、第３図ａ、ｂは各部の電圧、電流波形図である
。
２９・・・トランジスタ、３０・・・コイル、３２・・
・平滑コンデンサ、３３・・・コンデンサ
第１図
（
（Fig. 1 is a circuit diagram showing an example of a conventional chopper type switching power supply device, Fig. 2 is a circuit diagram of an embodiment of the power supply device of the present invention, and Figs. 3a and 3b are voltage and current waveform diagrams of various parts. be. 29...Transistor, 30...Coil, 32...
・Smoothing capacitor, 33...Capacitor Figure 1 ( (
Claims (1)
電流を断続するスイッチング素子と、そのスイッチング
素子の出力端にカソードを接続しアースにアノードを接
続したダイオードと、一端をスイッチング素子の出力端
に接続し、他端と７一ス間に平滑コンデンサを接続し、
その端子を安定直流出力端子としたコイルと、安定化直
流出力電圧と基準電圧とを比較して、出ノ〕電圧の安定
化を図るために、スイッチング素子を制御するように接
続した電圧比較部と、その電ＬＬ比較部の基Ｗ、電圧入
力端にイ４加されたコンデンサ゛を有する電源装置。1. An unstable DC power supply section, a switching element that intermittents the current from the unstable DC power supply section, a diode whose cathode is connected to the output terminal of the switching element, and an anode connected to the ground, and one end of which is connected to the switching element. Connect to the output end, connect a smoothing capacitor between the other end and 71st,
A voltage comparator unit connected to control a switching element in order to stabilize the output voltage by comparing the stabilized DC output voltage with the reference voltage and the coil whose terminal is a stable DC output terminal. A power supply device having a capacitor added to the base W of the voltage LL comparison section and the voltage input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4624484A JPS60190165A (en) | 1984-03-09 | 1984-03-09 | Power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4624484A JPS60190165A (en) | 1984-03-09 | 1984-03-09 | Power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60190165A true JPS60190165A (en) | 1985-09-27 |
Family
ID=12741728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4624484A Pending JPS60190165A (en) | 1984-03-09 | 1984-03-09 | Power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60190165A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01148058A (en) * | 1987-12-01 | 1989-06-09 | Tokyo Electric Co Ltd | Dc power source device |
| JPH01283056A (en) * | 1988-05-09 | 1989-11-14 | Mitsubishi Electric Corp | Power supply equipment |
| JPH0274150A (en) * | 1988-09-09 | 1990-03-14 | Mitsubishi Electric Corp | Chopper |
| WO2006003751A1 (en) * | 2004-07-01 | 2006-01-12 | Murata Manufacturing Co., Ltd. | Dc-dc converter and converter device |
-
1984
- 1984-03-09 JP JP4624484A patent/JPS60190165A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01148058A (en) * | 1987-12-01 | 1989-06-09 | Tokyo Electric Co Ltd | Dc power source device |
| JPH01283056A (en) * | 1988-05-09 | 1989-11-14 | Mitsubishi Electric Corp | Power supply equipment |
| JPH0274150A (en) * | 1988-09-09 | 1990-03-14 | Mitsubishi Electric Corp | Chopper |
| WO2006003751A1 (en) * | 2004-07-01 | 2006-01-12 | Murata Manufacturing Co., Ltd. | Dc-dc converter and converter device |
| US7199561B2 (en) | 2004-07-01 | 2007-04-03 | Murata Manufacturing Co., Ltd. | DC-DC converter and converter device |
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