JPH0458084U - - Google Patents

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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
Application number
JP9990990U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP9990990U priority Critical patent/JPH0458084U/ja
Publication of JPH0458084U publication Critical patent/JPH0458084U/ja
Pending legal-status Critical Current

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  • Dc-Dc Converters (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】 1 一次巻線及び二次巻線を備え、この一次巻線
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.
JP9990990U 1990-09-25 1990-09-25 Pending JPH0458084U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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