JPH02142985U - - Google Patents
Info
- Publication number
- JPH02142985U JPH02142985U JP5031989U JP5031989U JPH02142985U JP H02142985 U JPH02142985 U JP H02142985U JP 5031989 U JP5031989 U JP 5031989U JP 5031989 U JP5031989 U JP 5031989U JP H02142985 U JPH02142985 U JP H02142985U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- converter
- output
- winding
- 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 8
- 238000009499 grossing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は負バイアス電圧Ｖｂと出力電流Ｉｏｕｔの関
係図、第３図は従来公知のＤＣ−ＤＣコンバータ
の回路図である。
ｎ１…一次巻線、ｎ２，ｎ３…二次巻線、ｑ…
スイツチング素子（ＭＯＳＦＥＴ）、Ｔ…トラン
ス、Ｕ１…誤差増幅器、Ｕ２…制御回路、Ｕ３…
バツフア回路、Ｖｂ…負バイアス電圧。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a relationship diagram between the negative bias voltage Vb and the output current Iout, and FIG. 3 is a circuit diagram of a conventionally known DC-DC converter. n1...Primary winding, n2, n3...Secondary winding, q...
Switching element (MOSFET), T...transformer, U1...error amplifier, U2...control circuit, U3...
Buffer circuit, Vb...negative bias voltage.
Claims (1)
チング素子によりオンオフされると共に、二次巻
線ｎ２に誘起された信号を整流平滑化して直流電
圧を出力するＤＣ−ＤＣコンバータ部と、 この出力電圧が所定の基準電圧と一致する方向
の制御信号を出力する制御回路と、 この制御回路の出力する制御信号を増幅して前
記スイツチング素子に供給するバツフア回路と、 を有するＤＣ−ＤＣコンバータのドライブ回路
において、 前記一次巻線と結合する第２の二次巻線ｎ３と
、 この第２の二次巻線に誘起される電圧を負電圧
で整流平滑化する逆バイアス回路と、 を設け、前記バツフア回路の動作用電源として
逆バイアス回路の出力電圧を用いることを特徴と
するＤＣ−ＤＣコンバータのドライブ回路。 (2) 前記ＤＣ−ＤＣコンバータ部の整流平滑化
回路に第１のチヨークコイルを設け、 前記逆バイアス回路にこの第１のチヨークコイ
ルと磁気的に結合する第２のチヨークコイルを設
けたことを特徴とする請求項１記載のＤＣ−ＤＣ
コンバータのドライブ回路。[Claims for Utility Model Registration] (1) DC voltage is applied to the primary winding n1 and turned on and off by a switching element, and a DC voltage is output by rectifying and smoothing the signal induced in the secondary winding n2. - a DC converter section, a control circuit that outputs a control signal in a direction in which the output voltage matches a predetermined reference voltage, and a buffer circuit that amplifies the control signal output from the control circuit and supplies it to the switching element; A drive circuit for a DC-DC converter having a second secondary winding n3 coupled to the primary winding, and a reverse winding that rectifies and smoothes the voltage induced in the second secondary winding with a negative voltage. A drive circuit for a DC-DC converter, comprising: a bias circuit; and an output voltage of the reverse bias circuit is used as a power source for operating the buffer circuit. (2) The rectifying and smoothing circuit of the DC-DC converter section is provided with a first check coil, and the reverse bias circuit is provided with a second check coil magnetically coupled to the first check coil. DC-DC according to claim 1
Converter drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5031989U JPH02142985U (en) | 1989-04-28 | 1989-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5031989U JPH02142985U (en) | 1989-04-28 | 1989-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02142985U true JPH02142985U (en) | 1990-12-04 |
Family
ID=31568764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5031989U Pending JPH02142985U (en) | 1989-04-28 | 1989-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02142985U (en) |
-
1989
- 1989-04-28 JP JP5031989U patent/JPH02142985U/ja active Pending
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