JPH01150483U - - Google Patents
Info
- Publication number
- JPH01150483U JPH01150483U JP4644788U JP4644788U JPH01150483U JP H01150483 U JPH01150483 U JP H01150483U JP 4644788 U JP4644788 U JP 4644788U JP 4644788 U JP4644788 U JP 4644788U JP H01150483 U JPH01150483 U JP H01150483U
- Authority
- JP
- Japan
- Prior art keywords
- input
- voltage
- output
- control
- control transistor
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例に係るスイツチング
レギユレータの回路図、第２図は同実施例のスイ
ツチングレギユレータの動作説明に供するタイミ
ングチヤートである。第３図は従来例のスイツチ
ングレギユレータの回路図、第４図は同従来例の
動作説明に供するタイミングチヤートである。
ＩＮ１，ＩＮ２…入力端子、ＯＵＴ１，ＯＵＴ
２…出力端子、ＴＲ…制御トランジスタ、ＣＴ…
制御回路、ＲＣ…基準電圧回路、ＣＰ…比較器、
ＬＮ１…入力側電源ライン、ＬＮ２…出力側電源
ライン。
FIG. 1 is a circuit diagram of a switching regulator according to an embodiment of the present invention, and FIG. 2 is a timing chart for explaining the operation of the switching regulator of the embodiment. FIG. 3 is a circuit diagram of a conventional switching regulator, and FIG. 4 is a timing chart for explaining the operation of the conventional example. IN1, IN2...Input terminal, OUT1, OUT
2...Output terminal, TR...Control transistor, CT...
Control circuit, RC...reference voltage circuit, CP...comparator,
LN1...Input side power line, LN2...Output side power line.
Claims (1)
クタ・エミツタからなる入・出力部が直列に挿入
接続され、かつベースに与えられる制御信号に応
答してオンオフ動作する制御トランジスタと、出
力電圧の大きさの変化を検出し、その検出結果に
基づいてその出力電圧が一定となるように前記制
御トランジスタのオンオフ動作を制御する制御信
号を前記制御トランジスタのベースに出力する制
御回路とを具備する降圧型スイツチングレギユレ
ータにおいて、 前記入力端子と前記制御トランジスタの入力部
との間の電源ライン（入力側電源ライン）に接続
され、前記入力側電源ラインを介して与えられる
入力電圧が所定値以下のときはその入力電圧の変
化に追随して変化し、その入力電圧が所定値に達
した後はその入力電圧の変化とは無関係の一定の
基準電圧を出力する基準電圧回路と、前記入力電
圧を作動電源として供給されるとともに前記基準
電圧が一方の入力部に与えられ、前記出力電圧が
他方の入力部に与えられ、前記基準電圧が前記出
力電圧よりも、大きいときに前記制御トランジス
タをオン駆動する駆動信号を出力し、小さいとき
はその駆動信号の出力を停止する比較器とを備え
、 前記制御回路は、その電源受給部を前記出力端
子と前記制御トランジスタの出力部との間の電源
ライン（出力側電源ライン）に接続されるととも
に、前記比較器が駆動信号の出力を停止する前に
供給されるその電源受給部への出力電圧により作
動して前記制御信号の出力を開始することを特徴
とする降圧型スイツチングレギユレータ。[Claims for Utility Model Registration] An input/output section consisting of a collector and an emitter is inserted and connected in series to a power line between an input terminal and an output terminal, and is turned on and off in response to a control signal given to the base. The control transistor detects a change in the magnitude of the output voltage, and outputs a control signal to the base of the control transistor to control the on/off operation of the control transistor so that the output voltage is constant based on the detection result. In a step-down switching regulator comprising a control circuit, the input terminal is connected to a power line (input side power line) between the input terminal and the input part of the control transistor, and the voltage is supplied via the input side power line. A standard that outputs a constant reference voltage that is independent of changes in input voltage after the input voltage reaches a predetermined value. a voltage circuit, the input voltage being supplied as an operating power source, the reference voltage being given to one input part, the output voltage being given to the other input part, the reference voltage being greater than the output voltage; and a comparator that outputs a drive signal that turns on the control transistor when the control circuit is small, and stops outputting the drive signal when the control circuit is small, and the control circuit connects its power receiving section to the output terminal and the control transistor. The comparator is connected to the power supply line (output side power supply line) between the comparator and the output part, and is operated by the output voltage to the power receiving part supplied before the comparator stops outputting the drive signal, and controls the control. A step-down switching regulator characterized by starting output of a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988046447U JPH0626069Y2 (en) | 1988-04-05 | 1988-04-05 | Step-down switching regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988046447U JPH0626069Y2 (en) | 1988-04-05 | 1988-04-05 | Step-down switching regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01150483U true JPH01150483U (en) | 1989-10-18 |
| JPH0626069Y2 JPH0626069Y2 (en) | 1994-07-06 |
Family
ID=31272713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988046447U Expired - Lifetime JPH0626069Y2 (en) | 1988-04-05 | 1988-04-05 | Step-down switching regulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626069Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627544U (en) * | 1979-08-09 | 1981-03-14 | ||
| JPS6248262A (en) * | 1985-08-26 | 1987-03-02 | Furuno Electric Co Ltd | Stabilized power circuit |
-
1988
- 1988-04-05 JP JP1988046447U patent/JPH0626069Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627544U (en) * | 1979-08-09 | 1981-03-14 | ||
| JPS6248262A (en) * | 1985-08-26 | 1987-03-02 | Furuno Electric Co Ltd | Stabilized power circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0626069Y2 (en) | 1994-07-06 |
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