JPH02104786U - - Google Patents
Info
- Publication number
- JPH02104786U JPH02104786U JP1116989U JP1116989U JPH02104786U JP H02104786 U JPH02104786 U JP H02104786U JP 1116989 U JP1116989 U JP 1116989U JP 1116989 U JP1116989 U JP 1116989U JP H02104786 U JPH02104786 U JP H02104786U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- voltage waveform
- processing circuit
- waveform processing
- circuit
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例のスイツチングレギ
ユレータの構成を示すブロツク図、第２図は第１
図の回路の動作を説明するための波形図、第３図
は従来のスイツチングレギユレータの構成を示す
ブロツク図、第４図は第３図の回路の動作を説明
するための波形図である。
Ｂ……電池、Ｓ……電源スイツチ、Ｌ……コイ
ル、Ｄ……ダイオード、Ｃ……コンデンサ、Ｑ…
…スイツチングトランジスタ、ＣＮＴ……制御回
路、ＳＴ……ソフトスタート用の電圧波形処理回
路、ｒ１，ｒ２……分圧器を構成する抵抗器、Ｏ
Ｐ……アクテイブＲＣ微分回路を構成する演算増
幅器、Ｖ……所定レベルの交番電圧、Ｖｒｅｆ…
…制御回路ＣＮＴから出力される基準電圧、ｖｒ
ｅｆ……分圧後の基準電圧、Ｉｑ……スイツチン
グトランジスタに流れる電流、Ｖｏ……出力電圧
。
FIG. 1 is a block diagram showing the configuration of a switching regulator according to an embodiment of the present invention, and FIG.
FIG. 3 is a block diagram showing the configuration of a conventional switching regulator. FIG. 4 is a waveform diagram explaining the operation of the circuit shown in FIG. be. B...Battery, S...Power switch, L...Coil, D...Diode, C...Capacitor, Q...
...Switching transistor, CNT...Control circuit, ST...Voltage waveform processing circuit for soft start, r1 , r2 ...Resistor forming voltage divider, O
P... operational amplifier constituting an active RC differentiator circuit, V... alternating voltage at a predetermined level, Vref...
...Reference voltage output from the control circuit CNT, vr
ef...Reference voltage after voltage division, Iq...Current flowing through the switching transistor, Vo...Output voltage.
Claims (1)
ンサと、 このダイオード及びコンデンサの直列接続回路
に並列に接続され間歇的な導通によつて前記コイ
ルに電流を発生させるスイツチングトランジスタ
と、 ソフトスタート用の電圧波形処理回路と、 動作の開始時に前記電圧波形処理回路に所定の
基準電圧を供給し処理済みの振幅漸減の電圧波形
を受け、これを所定レベルの交番電圧から差し引
いたものを前記スイツチングトランジスタの間歇
的導通のための制御電圧として出力する制御回路
とを備えたスイツチレギユレータにおいて、 前記電圧波形処理回路は、前記基準電圧に基づ
き前記交番電圧のピーク値よりもわずかに小さな
電圧値を発生する分圧器と、この分圧器の出力を
所定のレベルに向けてほぼ直線的に減少させるア
クテイブＲＣ微分器とを備えたことを特徴とする
スイツチングレギユレータ。[Claims for Utility Model Registration] A coil, a diode, and a capacitor connected in series, and a switching transistor that is connected in parallel to the series connection circuit of the diode and capacitor and generates a current in the coil through intermittent conduction. , a voltage waveform processing circuit for soft start, and a voltage waveform processing circuit that supplies a predetermined reference voltage to the voltage waveform processing circuit at the start of operation, receives a processed voltage waveform whose amplitude gradually decreases, and subtracts this from an alternating voltage at a predetermined level. and a control circuit that outputs the voltage as a control voltage for intermittent conduction of the switching transistor, wherein the voltage waveform processing circuit is configured to output a voltage waveform that is slightly smaller than the peak value of the alternating voltage based on the reference voltage. 1. A switching regulator comprising: a voltage divider that generates a small voltage value; and an active RC differentiator that reduces the output of the voltage divider substantially linearly toward a predetermined level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1116989U JPH02104786U (en) | 1989-01-31 | 1989-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1116989U JPH02104786U (en) | 1989-01-31 | 1989-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02104786U true JPH02104786U (en) | 1990-08-21 |
Family
ID=31219485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1116989U Pending JPH02104786U (en) | 1989-01-31 | 1989-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02104786U (en) |
-
1989
- 1989-01-31 JP JP1116989U patent/JPH02104786U/ja active Pending