JPH0458084U - - Google Patents
Info
- Publication number
- JPH0458084U JPH0458084U JP9990990U JP9990990U JPH0458084U JP H0458084 U JPH0458084 U JP H0458084U JP 9990990 U JP9990990 U JP 9990990U JP 9990990 U JP9990990 U JP 9990990U JP H0458084 U JPH0458084 U JP H0458084U
- Authority
- JP
- Japan
- Prior art keywords
- drain
- source
- turned
- power mosfet
- coil
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 8
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図及び第２図はそれぞれ本考案の第１の実
施例を示す回路図及びこの実施例の動作を説明す
るための整流用のパワーＭＯＳＦＥＴの逆出力特
性図、第３図〜第５図はそれぞれ本考案の第２〜
第４の実施例を示す回路図、第６図及び第７図は
それぞれ従来のＤＣ−ＤＣコンバータ回路の第１
及び第２の例を示す回路図である。
１，１Ａ〜１Ｅ……チヨークコイル、２，２Ａ
……制御回路、３，３Ａ，４，４Ａ……パワーＭ
ＯＳＦＥＴ、５……平滑コンデンサ、６，６Ａ，
７，７Ａ……ダイオード、１０……電源、２０…
…負荷回路、４１，４１Ａ……内蔵ダイオード、
Ｑ１〜Ｑ３……トランジスタ、Ｒ１〜Ｒ９……抵
抗。
1 and 2 are a circuit diagram showing a first embodiment of the present invention, a reverse output characteristic diagram of a rectifying power MOSFET to explain the operation of this embodiment, and FIGS. 3 to 5, respectively. are the second to
The circuit diagrams illustrating the fourth embodiment, FIGS. 6 and 7, respectively show the first circuit diagram of the conventional DC-DC converter circuit.
and FIG. 6 is a circuit diagram showing a second example. 1,1A~1E...Chiyoke coil, 2,2A
...Control circuit, 3,3A,4,4A...Power M
OSFET, 5...Smoothing capacitor, 6,6A,
7,7A...diode, 10...power supply, 20...
...Load circuit, 41,41A...Built-in diode,
Q1-Q3...Transistor, R1-R9...Resistor.
Claims (1)
の一端を第１の電源供給端子と接続するチヨーク
コイルと、ソース、ドレインの一方を前記チヨー
クコイルの他端と接続し前記ソース、ドレインの
他方を第２の電源供給端子と接続して制御信号に
よりオン・オフする第１のパワーＭＯＳＦＥＴと
、所定の周波数の前記制御信号を発生する制御回
路と、ソース、ドレインの一方を前記チヨークコ
イルの一次巻線の他端と接続し前記第１のパワー
ＭＯＳＦＥＴがオフとなつたとき前記チヨークコ
イルの二次巻線に発生する電圧によりオンとなる
第２のパワーＭＯＳＦＥＴと、一端を前記第２の
ＭＯＳＦＥＴのソース、ドレインの他方及び負荷
回路の一端と接続し他端を前記第２の電源供給端
子及び前記負荷回路の他端と接続する平滑コンデ
ンサとを有することを特徴とするＣＤ−ＤＣコン
バータ回路。 ２ ソース、ドレインの一方を第１の電源供給端
子と接続し制御信号によりオン・オフする第１の
パワーＭＯＳＦＥＴと、所定の周波数の前記制御
信号を発生する制御回路と、一次巻線及び二次巻
線を備え、この一次巻線の一端を前記第１のパワ
ーＭＯＳＦＥＴのソース、ドレインの他方と接続
するチヨークコイルと、ソース、ドレインの一方
を前記第１のパワーＭＯＳＦＥＴのソース、ドレ
インの他方と接続し他方を第２の電源供給端子と
接続して前記第１のパワーＭＯＳＦＥＴがオフと
なつたとき前記チヨークコイルの二次巻線に発生
する電圧によりオンとなる第２のパワーＭＯＳＦ
ＥＴと、一端を前記チヨークコイルの一次巻線の
他端及び負荷回路の一端と接続し他端を前記第２
の電源供給端子及び前記負荷回路の他端と接続す
る平滑コンデンサとを有することを特徴とするＤ
Ｃ−ＤＣコンバータ回路。[Claims for Utility Model Registration] 1. A chiyoke coil comprising a primary winding and a secondary winding, one end of which is connected to a first power supply terminal, and one of the source and drain connected to the other end of the chiyoke coil. a first power MOSFET connected to the source and the drain connected to a second power supply terminal to be turned on and off by a control signal; a control circuit that generates the control signal at a predetermined frequency; a second power MOSFET whose one drain is connected to the other end of the primary winding of the chiyoke coil and is turned on by a voltage generated in the secondary winding of the chiyoke coil when the first power MOSFET is turned off; A smoothing capacitor having one end connected to the other of the source and drain of the second MOSFET and one end of the load circuit, and the other end connected to the second power supply terminal and the other end of the load circuit. CD-DC converter circuit. 2. A first power MOSFET whose source and drain are connected to a first power supply terminal and turned on and off by a control signal, a control circuit that generates the control signal of a predetermined frequency, a primary winding and a secondary a winding coil, one end of which is connected to the other of the source and drain of the first power MOSFET; and one of the source and drain is connected to the other of the source and drain of the first power MOSFET. and a second power MOSFET whose other end is connected to a second power supply terminal to be turned on by a voltage generated in the secondary winding of the chiyoke coil when the first power MOSFET is turned off.
ET, one end connected to the other end of the primary winding of the chiyoke coil and one end of the load circuit, and the other end connected to the second end.
and a smoothing capacitor connected to the other end of the load circuit.
C-DC converter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9990990U JPH0458084U (en) | 1990-09-25 | 1990-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9990990U JPH0458084U (en) | 1990-09-25 | 1990-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0458084U true JPH0458084U (en) | 1992-05-19 |
Family
ID=31842166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9990990U Pending JPH0458084U (en) | 1990-09-25 | 1990-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0458084U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0677486U (en) * | 1993-04-09 | 1994-10-28 | 東光株式会社 | Buck-boost DC-DC converter |
| JP2012044806A (en) * | 2010-08-20 | 2012-03-01 | Mitsubishi Electric Corp | Power supply circuit and lighting fixture |
-
1990
- 1990-09-25 JP JP9990990U patent/JPH0458084U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0677486U (en) * | 1993-04-09 | 1994-10-28 | 東光株式会社 | Buck-boost DC-DC converter |
| JP2012044806A (en) * | 2010-08-20 | 2012-03-01 | Mitsubishi Electric Corp | Power supply circuit and lighting fixture |
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