JPS6244684U - - Google Patents
Info
- Publication number
- JPS6244684U JPS6244684U JP13468585U JP13468585U JPS6244684U JP S6244684 U JPS6244684 U JP S6244684U JP 13468585 U JP13468585 U JP 13468585U JP 13468585 U JP13468585 U JP 13468585U JP S6244684 U JPS6244684 U JP S6244684U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- comparator
- error amplifier
- output
- input
- 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
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の実施例に係る昇圧チヨツパ回
路の回路図、第２図は第１図に示した回路の動作
説明図、第３図は従来の昇圧チヨツパ回路の回路
図、第４図は第３図に示した回路のトランジスタ
ＴＲのコレクタ電圧波形図である。
ＴＲ……トランジスタ、Ｌ……コイル、Ｄ……
ダイオード、Ｃ……コンデンサ、ＶＲ……誤差検
出抵抗、Ａｍｐ……誤差増幅器、Ｃｏｍｐ……比
較器、Ｖｒｅｆ……基準電圧、ＯＳＣ……発振器
、Ｒ１，Ｒ２……分圧抵抗。
FIG. 1 is a circuit diagram of a boost chopper circuit according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of the operation of the circuit shown in FIG. 1, FIG. 3 is a circuit diagram of a conventional boost chopper circuit, and FIG. 4 is a collector voltage waveform diagram of the transistor TR of the circuit shown in FIG. 3; TR...transistor, L...coil, D...
Diode, C... Capacitor, VR... Error detection resistor, Amp... Error amplifier, Comp... Comparator, Vref... Reference voltage, OSC... Oscillator, R1, R2... Voltage dividing resistor.
Claims (1)
る誤差増幅器と、前記誤差増幅器の出力を一方入
力に、比較基準波を他方入力に与えられる比較器
とをスイツチング素子の制御系として含み、前記
比較器の出力に基づいて前記スイツチング素子を
開閉制御する昇圧チヨツパ回路において、 前記誤差増幅器が飽和電圧を出力するときに、
この飽和電圧に基づく前記比較器への入力電圧が
、前記比較基準波のピーク電圧よりも低くなるよ
うな分圧抵抗を、前記誤差増幅器と前記比較器と
の間に介在させたことを特徴とする昇圧チヨツパ
回路。[Claims for Utility Model Registration] A switching element comprising an error amplifier that provides an error output between a stabilized output voltage and a reference voltage, and a comparator that receives the output of the error amplifier to one input and a comparison reference wave to the other input. In the step-up chopper circuit that is included as a control system and controls opening and closing of the switching element based on the output of the comparator, when the error amplifier outputs a saturation voltage,
A voltage dividing resistor is interposed between the error amplifier and the comparator so that the input voltage to the comparator based on this saturation voltage is lower than the peak voltage of the comparison reference wave. A step-up chopper circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13468585U JPS6244684U (en) | 1985-09-02 | 1985-09-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13468585U JPS6244684U (en) | 1985-09-02 | 1985-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6244684U true JPS6244684U (en) | 1987-03-18 |
Family
ID=31036154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13468585U Pending JPS6244684U (en) | 1985-09-02 | 1985-09-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6244684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01252163A (en) * | 1988-03-31 | 1989-10-06 | Nec Corp | Switching stabilized power supply |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421696A (en) * | 1987-07-17 | 1989-01-25 | Fujitsu Ltd | Bond transaction system |
-
1985
- 1985-09-02 JP JP13468585U patent/JPS6244684U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421696A (en) * | 1987-07-17 | 1989-01-25 | Fujitsu Ltd | Bond transaction system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01252163A (en) * | 1988-03-31 | 1989-10-06 | Nec Corp | Switching stabilized power supply |