JPH03124774U - - Google Patents
Info
- Publication number
- JPH03124774U JPH03124774U JP3239790U JP3239790U JPH03124774U JP H03124774 U JPH03124774 U JP H03124774U JP 3239790 U JP3239790 U JP 3239790U JP 3239790 U JP3239790 U JP 3239790U JP H03124774 U JPH03124774 U JP H03124774U
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- load current
- converter
- detection circuit
- current detection
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Control Of Voltage And Current In General (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例の回路構成図、第２
図は本考案の一実施例の動作を説明するための波
形図、第３図は本考案の他の実施例の回路構成図
、第４図は従来の一例の回路構成図である。
１……制御手段、２……入力電圧源、５……ス
イツチ手段、６……負荷電流検出回路、９……検
出手段。
Figure 1 is a circuit configuration diagram of an embodiment of the present invention;
The figure is a waveform diagram for explaining the operation of one embodiment of the present invention, FIG. 3 is a circuit diagram of another embodiment of the present invention, and FIG. 4 is a circuit diagram of a conventional example. DESCRIPTION OF SYMBOLS 1...Control means, 2...Input voltage source, 5...Switch means, 6...Load current detection circuit, 9...Detection means.
Claims (1)
イツチング制御することにより、該出力電圧を一
定レベルに保持する直流−直流コンバータにおい
て、 前記出力電圧により負荷に流れる負荷電流を検
出する負荷電流検出回路を具備し、該負荷電流検
出回路の検出信号に基づいて前記スイツチング素
子のオン・オフ期間を制御する構成としてなる直
流−直流コンバータ。[Claims for Utility Model Registration] In a DC-DC converter that maintains the output voltage at a constant level by controlling switching elements in a period corresponding to the output voltage, the load current flowing through the load is detected based on the output voltage. A DC-DC converter comprising a load current detection circuit configured to control an on/off period of the switching element based on a detection signal of the load current detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3239790U JPH03124774U (en) | 1990-03-28 | 1990-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3239790U JPH03124774U (en) | 1990-03-28 | 1990-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03124774U true JPH03124774U (en) | 1991-12-17 |
Family
ID=31535369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3239790U Pending JPH03124774U (en) | 1990-03-28 | 1990-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03124774U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151009A (en) * | 2013-02-26 | 2013-06-12 | 深圳市华星光电技术有限公司 | Backlight dimming circuit and dimming method thereof as well as liquid crystal display |
| CN103715889A (en) * | 2012-09-28 | 2014-04-09 | 乐金显示有限公司 | DC-DC converter control circuit, image display device using the same and driving method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5739429A (en) * | 1980-08-15 | 1982-03-04 | Hitachi Ltd | Regulated power supply |
| JPH0274153A (en) * | 1988-09-09 | 1990-03-14 | Mitsubishi Electric Corp | Chopper apparatus |
-
1990
- 1990-03-28 JP JP3239790U patent/JPH03124774U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5739429A (en) * | 1980-08-15 | 1982-03-04 | Hitachi Ltd | Regulated power supply |
| JPH0274153A (en) * | 1988-09-09 | 1990-03-14 | Mitsubishi Electric Corp | Chopper apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715889A (en) * | 2012-09-28 | 2014-04-09 | 乐金显示有限公司 | DC-DC converter control circuit, image display device using the same and driving method thereof |
| CN103715889B (en) * | 2012-09-28 | 2017-04-12 | 乐金显示有限公司 | DC-DC converter control circuit, image display device using the same and driving method thereof |
| CN103151009A (en) * | 2013-02-26 | 2013-06-12 | 深圳市华星光电技术有限公司 | Backlight dimming circuit and dimming method thereof as well as liquid crystal display |
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