JPH0321989U - - Google Patents
Info
- Publication number
- JPH0321989U JPH0321989U JP7915589U JP7915589U JPH0321989U JP H0321989 U JPH0321989 U JP H0321989U JP 7915589 U JP7915589 U JP 7915589U JP 7915589 U JP7915589 U JP 7915589U JP H0321989 U JPH0321989 U JP H0321989U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- switching element
- input terminal
- circuit means
- output 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
- 238000004804 winding Methods 0.000 claims description 7
- 238000009499 grossing Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案によるＤＣ−ＤＣコンバータの
一実施例を示す回路図、第２図は第１図に示した
ＤＣ−ＤＣコンバータの動作特性図、第３図は従
来技術によるＤＣ−ＤＣコンバータを説明する回
路図、第４図は第３図に示したＤＣ−ＤＣコンバ
ータの動作特性図である。
１……スイツチング素子、２……トランス、３
……起動回路、４……駆動回路、５……平滑回路
、６……帰還回路、７……入力端子、８……出力
端子、９……第１の回路手段、１０……第２の回
路手段、Ｐ１……第１一次巻線、Ｐ２……第２一
次巻線、Ｓ……二次巻線。
Fig. 1 is a circuit diagram showing an embodiment of the DC-DC converter according to the present invention, Fig. 2 is an operating characteristic diagram of the DC-DC converter shown in Fig. 1, and Fig. 3 is a DC-DC converter according to the prior art. FIG. 4 is an operational characteristic diagram of the DC-DC converter shown in FIG. 3. 1...Switching element, 2...Transformer, 3
...Starting circuit, 4...Drive circuit, 5...Smoothing circuit, 6...Feedback circuit, 7...Input terminal, 8...Output terminal, 9...First circuit means, 10...Second circuit means Circuit means, P1 ...first primary winding, P2 ...second primary winding, S...secondary winding.
Claims (1)
出力端に一次側巻線の一方を接続した電圧変換ト
ランスと、上記一次側巻線の他方と上記スイツチ
ング素子の入力端に対して並列接続した起動回路
と、上記電圧変換トランスの二次側巻線に接続し
た平滑回路と、この平滑回路の出力端子から上記
スイツチング素子の上記入力端子に接続した帰還
回路とを有するＲＣＣ方式のＤＣ−ＤＣコンバー
タにおいて、前記スイツチング素子の入力端子と
前記一次巻線の他方に接続した起動回路と直列に
接続した第１の回路手段と、前記帰還回路とは別
個に前記平滑回路の出力端子から前記入力端子に
接続した第２の帰還回路を構成する第２の回路手
段とを備え、前記入力端子に印加されるＤＣ電圧
が一定値以下となる場合は上記第１の回路手段に
より前記スイツチング素子の動作を停止させ、前
記出力端子のＤＣ電圧が所定値以下となる場合は
上記第２の回路手段により上記スイツチング素子
の動作を停止させるように構成したことを特徴と
するＤＣ−ＤＣコンバータ。 a switching element; a voltage conversion transformer having one of the primary windings connected to the output end of the switching element; a starting circuit having the other primary winding connected in parallel to the input end of the switching element; In an RCC type DC-DC converter having a smoothing circuit connected to a secondary winding of a voltage conversion transformer, and a feedback circuit connected from an output terminal of the smoothing circuit to the input terminal of the switching element, the switching element a first circuit means connected in series with a starting circuit connected to the input terminal of the smoothing circuit and the other of the primary windings, and a second circuit means connected from the output terminal of the smoothing circuit to the input terminal separately from the feedback circuit. and second circuit means constituting a feedback circuit, and when the DC voltage applied to the input terminal becomes less than a certain value, the first circuit means stops the operation of the switching element, and the output terminal A DC-DC converter, characterized in that the second circuit means stops the operation of the switching element when the DC voltage of the switching element becomes equal to or less than a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7915589U JPH0321989U (en) | 1989-07-06 | 1989-07-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7915589U JPH0321989U (en) | 1989-07-06 | 1989-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0321989U true JPH0321989U (en) | 1991-03-06 |
Family
ID=31623064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7915589U Pending JPH0321989U (en) | 1989-07-06 | 1989-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0321989U (en) |
-
1989
- 1989-07-06 JP JP7915589U patent/JPH0321989U/ja active Pending
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