JPS5839619U - DC-DC conversion circuit - Google Patents
DC-DC conversion circuitInfo
- Publication number
- JPS5839619U JPS5839619U JP13351181U JP13351181U JPS5839619U JP S5839619 U JPS5839619 U JP S5839619U JP 13351181 U JP13351181 U JP 13351181U JP 13351181 U JP13351181 U JP 13351181U JP S5839619 U JPS5839619 U JP S5839619U
- Authority
- JP
- Japan
- Prior art keywords
- conversion circuit
- main switch
- circuit
- switch transistor
- transformer
- 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
Landscapes
- Dc-Dc Converters (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はフライバックコンバータを用いた基本的な直流
−直流変換回路を示す回路図、第２図は ′本考案に
係る直流−直流変換回路の実施例を示す回路図、第３図
は実施例の動作を説明するための波形図である。
Ｃｉ 乃至Ｃ３・・・コンデンサ、Ｄｌ、Ｄ２・・・ダ
イオード、Ｄｚ・；・定電圧ダイオード、ＩＮ・・・入
力端子、ＯＵＴ・・・出力端子、Ｑｌ乃至Ｑ３・・・ト
ランジスタ、Ｒ□乃至Ｒ７・・・抵抗器、Ｌｌ・・・チ
ョークコイル、Ｔ１・・・発振トランス、Ｎ１乃至Ｎ３
・・・巻線。Fig. 1 is a circuit diagram showing a basic DC-DC conversion circuit using a flyback converter, Fig. 2 is a circuit diagram showing an embodiment of the DC-DC conversion circuit according to the present invention, and Fig. 3 is a circuit diagram showing an example of the DC-DC conversion circuit according to the present invention. FIG. 3 is a waveform diagram for explaining the operation of an example. Ci to C3... Capacitor, Dl, D2... Diode, Dz... ;- Constant voltage diode, IN... Input terminal, OUT... Output terminal, Ql to Q3... Transistor, R□ to R7 ...Resistor, Ll...Choke coil, T1...Oscillation transformer, N1 to N3
...winding wire.
Claims (1)
に接続されていて直流入力が供給される１次回路を有し
、前記トランスの第２巻線の帰還電圧を前記主スイツチ
トランジスタのベースに帰゛還して発振回路を構成する
とともに、前記主スイツチトランジスタのオフ時に前記
トランスの第１、第２又は第３の巻線に発生する電圧を
整流、平滑して出力電圧を得る直流−直流変換回路にお
いて、前記１次回路の電流を直列インピーダンス素子に
より検出した信号と、出力電圧を誤差増幅した信号との
和の信号によって、前記主スイツチトランジスタのベー
ス、エミッタ回路に並列にコレクタ、エミッタ間が接続
された制御用トランジスタのベースを駆動することを特
徴とする直流−直流変換回路。The first winding of the transformer and the main switch transistor are connected in series and have a primary circuit to which DC input is supplied, and the feedback voltage of the second winding of the transformer is applied to the base of the main switch transistor. DC-DC that returns to form an oscillator circuit and rectifies and smoothes the voltage generated in the first, second, or third winding of the transformer when the main switch transistor is turned off to obtain an output voltage. In the conversion circuit, a signal is generated between the collector and emitter in parallel to the base and emitter circuit of the main switch transistor by a signal that is the sum of the signal detected by the series impedance element of the current in the primary circuit and the signal obtained by error amplifying the output voltage. A DC-DC conversion circuit characterized in that it drives the base of a control transistor connected to the DC-DC conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13351181U JPS5839619U (en) | 1981-09-08 | 1981-09-08 | DC-DC conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13351181U JPS5839619U (en) | 1981-09-08 | 1981-09-08 | DC-DC conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5839619U true JPS5839619U (en) | 1983-03-15 |
Family
ID=29926971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13351181U Pending JPS5839619U (en) | 1981-09-08 | 1981-09-08 | DC-DC conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5839619U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6161914U (en) * | 1984-09-28 | 1986-04-25 | ||
| JPS6325919U (en) * | 1986-07-31 | 1988-02-20 | ||
| JPS6369126U (en) * | 1986-10-24 | 1988-05-10 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52151814A (en) * | 1976-06-14 | 1977-12-16 | Matsushita Electric Ind Co Ltd | Electric power converting circuit |
| JPS5450816A (en) * | 1977-09-29 | 1979-04-21 | Toko Inc | Switching regulator |
-
1981
- 1981-09-08 JP JP13351181U patent/JPS5839619U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52151814A (en) * | 1976-06-14 | 1977-12-16 | Matsushita Electric Ind Co Ltd | Electric power converting circuit |
| JPS5450816A (en) * | 1977-09-29 | 1979-04-21 | Toko Inc | Switching regulator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6161914U (en) * | 1984-09-28 | 1986-04-25 | ||
| JPS6325919U (en) * | 1986-07-31 | 1988-02-20 | ||
| JPS6369126U (en) * | 1986-10-24 | 1988-05-10 |
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