JPH0476181U - - Google Patents
Info
- Publication number
- JPH0476181U JPH0476181U JP11828090U JP11828090U JPH0476181U JP H0476181 U JPH0476181 U JP H0476181U JP 11828090 U JP11828090 U JP 11828090U JP 11828090 U JP11828090 U JP 11828090U JP H0476181 U JPH0476181 U JP H0476181U
- Authority
- JP
- Japan
- Prior art keywords
- diode
- capacitor
- switching
- circuit
- 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
- 239000003990 capacitor Substances 0.000 claims 4
- 230000007423 decrease Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図はこの考案の実施に係る昇圧型スイツチ
ングレギユレータの回路図、第２図は従来の昇圧
型スイツチングレギユレータの回路図である。
１……スイツチング制御回路、２……コンパレ
ータ、Ｒ１，Ｃ３……ＣＲ時定数回路、Ｄ２……
放電用ダイオード、Ｑ２……出力制御用トランジ
スタ。
FIG. 1 is a circuit diagram of a step-up switching regulator according to this invention, and FIG. 2 is a circuit diagram of a conventional step-up switching regulator. 1... Switching control circuit, 2... Comparator, R1, C3... CR time constant circuit, D2...
Discharge diode, Q2... Output control transistor.
Claims (1)
イルとダイオードの直列回路と、上記チヨークコ
イルとダイオードの接続点と接地間に設けられた
スイツチングトランジスタと、入力電圧を電源と
して上記スイツチングトランジスタをオンオフ制
御するスイツチング制御回路とからなる昇圧型ス
イツチングレギユレータにおいて、 接地側にコンデンサ、入力端子側に抵抗を接続
してなるＣＲ時定数回路と、上記スイツチングト
ランジスタのコレクタまたはドレインと上記コン
デンサとの間に上記コンデンサの充電電荷放電用
のダイオードを設け、 上記ダイオードと出力端子間に接続された出力
制御用トランジスタを含み、上記コンデンサの充
電電圧低下時に上記出力制御用トランジスタをオ
ンさせる出力制御回路を設けたことを特徴とする
昇圧型スイツチングレギユレータ。[Claim for Utility Model Registration] A series circuit of a chiyoke coil and a diode provided between an input terminal and an output terminal, a switching transistor provided between a connection point of the chiyoke coil and the diode and ground, and a circuit using an input voltage as a power source. A step-up switching regulator comprising a switching control circuit that controls on/off of the switching transistor, a CR time constant circuit comprising a capacitor connected to the ground side and a resistor connected to the input terminal side, and a collector of the switching transistor. Alternatively, a diode for charging and discharging the capacitor is provided between the drain and the capacitor, and includes an output control transistor connected between the diode and the output terminal, and the output control transistor is connected when the charging voltage of the capacitor decreases. A step-up switching regulator characterized in that it is provided with an output control circuit that turns on the voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11828090U JP2501364Y2 (en) | 1990-11-08 | 1990-11-08 | Step-up switching regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11828090U JP2501364Y2 (en) | 1990-11-08 | 1990-11-08 | Step-up switching regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0476181U true JPH0476181U (en) | 1992-07-02 |
| JP2501364Y2 JP2501364Y2 (en) | 1996-06-19 |
Family
ID=31866198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11828090U Expired - Fee Related JP2501364Y2 (en) | 1990-11-08 | 1990-11-08 | Step-up switching regulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501364Y2 (en) |
-
1990
- 1990-11-08 JP JP11828090U patent/JP2501364Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2501364Y2 (en) | 1996-06-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |