JPS63191883U - - Google Patents
Info
- Publication number
- JPS63191883U JPS63191883U JP7973887U JP7973887U JPS63191883U JP S63191883 U JPS63191883 U JP S63191883U JP 7973887 U JP7973887 U JP 7973887U JP 7973887 U JP7973887 U JP 7973887U JP S63191883 U JPS63191883 U JP S63191883U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- current
- operational amplifier
- grounded
- terminal
- 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
- 230000008030 elimination Effects 0.000 claims 2
- 238000003379 elimination reaction Methods 0.000 claims 2
- 230000007257 malfunction Effects 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は、本考案による実施例を使用した電流
制御型スイツチングレギユレータの一例を示す回
路図である。第２図は、第１図の回路の要部の電
圧波形を示す波形図である。第３図は、従来の電
流制御型スイツチングレギユレータを示す回路図
である。
１……直流電源、２……トランス、３……整流
平滑回路、４……負荷、５……スイツチングトラ
ンジスタ、６……第１の抵抗、７……第２の抵抗
、８……第３の抵抗、９……オペアンプ、１０…
…電流モード制御ＩＣ、１１……出力誤差増幅器
、１２……電流コンパレータ、１３……ＲＳフリ
ツプフロツプ、１４……発生回路、１７……抵抗
、１８……コンデンサ、２０……オペアンプフイ
ルタ。
FIG. 1 is a circuit diagram showing an example of a current-controlled switching regulator using an embodiment of the present invention. FIG. 2 is a waveform diagram showing voltage waveforms of essential parts of the circuit of FIG. 1. FIG. 3 is a circuit diagram showing a conventional current-controlled switching regulator. 1... DC power supply, 2... Transformer, 3... Rectifier and smoothing circuit, 4... Load, 5... Switching transistor, 6... First resistor, 7... Second resistor, 8... Second resistor. Resistor 3, 9... operational amplifier, 10...
... Current mode control IC, 11 ... Output error amplifier, 12 ... Current comparator, 13 ... RS flip-flop, 14 ... Generation circuit, 17 ... Resistor, 18 ... Capacitor, 20 ... Operational amplifier filter.
Claims (1)
るスイツチングトランジスタによりトランスの一
次側電流を断続する電流制御型スイツチングレギ
ユレータにおいて、前記一次側電流を検出するた
めの第１の抵抗器の一端を接地し、前記第１の抵
抗器の他端を第２の抵抗器の一端に接続し、前記
第２の抵抗器の他端を雑音除去用の演算増幅器の
一方の入力端と第３の抵抗器の一端に接続し、前
記雑音除去用の演算増幅器の他方の入力端を接地
し、前記雑音除去用の演算増幅器の出力端を前記
第３の抵抗器の他端と、前記電流コンパレータの
一方の端子に接続することを特徴とする電流制御
型スイツチングレギユレータの誤動作防止回路。 In a current control type switching regulator in which the primary side current of the transformer is switched on and off by a switching transistor controlled based on the output of a current comparator, one end of the first resistor for detecting the primary side current is grounded. The other end of the first resistor is connected to one end of a second resistor, and the other end of the second resistor is connected to one input end of an operational amplifier for noise removal and a third resistor. The other input terminal of the operational amplifier for noise elimination is grounded, and the output terminal of the operational amplifier for noise elimination is connected to the other end of the third resistor and one of the current comparators. A malfunction prevention circuit for a current-controlled switching regulator that is connected to a terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7973887U JPS63191883U (en) | 1987-05-26 | 1987-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7973887U JPS63191883U (en) | 1987-05-26 | 1987-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63191883U true JPS63191883U (en) | 1988-12-09 |
Family
ID=30929888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7973887U Pending JPS63191883U (en) | 1987-05-26 | 1987-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63191883U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04112673A (en) * | 1990-09-03 | 1992-04-14 | Tohoku Ricoh Co Ltd | Current control system converter |
| JPH0461488U (en) * | 1990-10-01 | 1992-05-26 |
-
1987
- 1987-05-26 JP JP7973887U patent/JPS63191883U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04112673A (en) * | 1990-09-03 | 1992-04-14 | Tohoku Ricoh Co Ltd | Current control system converter |
| JPH0461488U (en) * | 1990-10-01 | 1992-05-26 |
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