JPH0488475U - - Google Patents
Info
- Publication number
- JPH0488475U JPH0488475U JP40295890U JP40295890U JPH0488475U JP H0488475 U JPH0488475 U JP H0488475U JP 40295890 U JP40295890 U JP 40295890U JP 40295890 U JP40295890 U JP 40295890U JP H0488475 U JPH0488475 U JP H0488475U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- transformer
- converter
- current
- primary
- 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
- 238000012544 monitoring process Methods 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Description
第１図は、本考案ＤＣ―ＤＣコンバータの望ま
しい一実施例の概略構成図、第２図は第１図示Ｄ
Ｃ―ＤＣコンバータの動作に係る説明図、である
。
図中、１０は車両搭載のバツテリ等の直流低電
圧源、１１はキー・スイツチに連動する等の電源
スイツチ、２１は第一比較器、２２，２３は抵抗
分圧回路構成用の抵抗、２４は抵抗、２５はキヤ
パシタ、２６，２７，２８は抵抗分圧回路構成用
の抵抗、２９は昇圧トランス一次電流検出抵抗、
３０は本考案により構成された全体としてのＤＣ
―ＤＣコンバータ、３１は第二比較器、３２，３
３はドライバ回路構成用のバイポーラ・トランジ
スタ、３４は昇圧トランス一次電流断続用のスイ
ツチング素子ないしその一例としてのＭＯＳ―Ｆ
ＥＴ、３５は昇圧トランス、３６はその一次巻線
、３７は同じくその二次巻線、３８は昇圧トラン
ス二次電流整流用のダイオード、３９はエネルギ
蓄積キヤパシタ、５０は負荷の一例としての容量
放電型内燃機関点火装置の点火回路部、５１は点
火コイル、５４は点火プラグ、である。
FIG. 1 is a schematic configuration diagram of a preferred embodiment of the DC-DC converter of the present invention, and FIG.
It is an explanatory diagram concerning operation of a C-DC converter. In the figure, 10 is a DC low voltage source such as a battery mounted on the vehicle, 11 is a power switch such as one linked to a key switch, 21 is a first comparator, 22 and 23 are resistors for configuring a resistive voltage divider circuit, and 24 is a resistor, 25 is a capacitor, 26, 27, 28 are resistors for configuring a resistor voltage divider circuit, 29 is a step-up transformer primary current detection resistor,
30 is the entire DC configured according to the present invention.
-DC converter, 31 is the second comparator, 32,3
3 is a bipolar transistor for driver circuit configuration, and 34 is a switching element for interrupting the primary current of the step-up transformer, or a MOS-F as an example thereof.
ET, 35 is a step-up transformer, 36 is its primary winding, 37 is also its secondary winding, 38 is a diode for rectifying the step-up transformer secondary current, 39 is an energy storage capacitor, and 50 is a capacitive discharge as an example of a load. The ignition circuit section of the type internal combustion engine ignition system includes an ignition coil 51 and a spark plug 54.
Claims (1)
子により周期的に断続して該昇圧トランス二次側
に交流高圧波形を得、これを整流して直流高電圧
を出力するＤＣ―ＤＣコンバータにおいて； 上記スイツチング素子中を流れる上記昇圧トラ
ンス一次電流を監視し、その大きさが予定の設定
電流値に至つた場合、上記スイツチング素子を強
制的にオフにする手段と； 上記昇圧トランス二次側の出力電圧を監視し、
それが予定の設定電圧値に至つたときにも上記ス
イツチング素子を強制的にオフにする手段と； を有して成るＤＣ―ＤＣコンバータ。[Claims for Utility Model Registration] A DC-- which periodically cuts off the primary DC current of a step-up transformer using a switching element to obtain an AC high voltage waveform on the secondary side of the step-up transformer, which is rectified to output a DC high voltage. In the DC converter; means for monitoring the primary current of the step-up transformer flowing through the switching element and forcibly turning off the switching element when the magnitude thereof reaches a predetermined set current value; Monitor the output voltage on the next side,
A DC-DC converter comprising: means for forcibly turning off the switching element even when the switching element reaches a predetermined set voltage value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40295890U JPH0488475U (en) | 1990-12-12 | 1990-12-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40295890U JPH0488475U (en) | 1990-12-12 | 1990-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0488475U true JPH0488475U (en) | 1992-07-31 |
Family
ID=31880804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40295890U Pending JPH0488475U (en) | 1990-12-12 | 1990-12-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0488475U (en) |
-
1990
- 1990-12-12 JP JP40295890U patent/JPH0488475U/ja active Pending
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