JPS6095620U - Semiconductor device for power control - Google Patents
Semiconductor device for power controlInfo
- Publication number
- JPS6095620U JPS6095620U JP18562483U JP18562483U JPS6095620U JP S6095620 U JPS6095620 U JP S6095620U JP 18562483 U JP18562483 U JP 18562483U JP 18562483 U JP18562483 U JP 18562483U JP S6095620 U JPS6095620 U JP S6095620U
- Authority
- JP
- Japan
- Prior art keywords
- m03fet
- load
- driving
- semiconductor device
- power control
- 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
Landscapes
- Protection Of Static Devices (AREA)
- Control Of Electrical Variables (AREA)
- Electronic Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は電力制御用半導体装置の従来例の概略図、第２
図はその動作波形図、第３図は本考案の一実施例を示す
回路図、第４図は本装置の正常時の動作波形図、第５図
は本装置の負荷短絡時の動作波形図である。
１０：負荷、１．１：負荷駆動用ＭＯ３ＦＥＴ、 １
２：第２Ｍ０３ＦＥＴ、 ｌ ３ ：第３Ｍ０３ＦＥＴ
、 ｌ ４ ：第４Ｍ０３ＦＥＴ、１５：可変抵抗、１
６：第１比較器、１７：電流検出回路、１８：平滑コン
デンサ、１９：第２比較器、２θ：三角波発生回路。Figure 1 is a schematic diagram of a conventional example of a semiconductor device for power control;
Figure 3 is a circuit diagram showing an embodiment of the present invention; Figure 4 is a diagram of the operating waveforms of this device during normal operation; Figure 5 is a diagram of the operating waveforms of this equipment when the load is short-circuited. It is. 10: Load, 1.1: MO3FET for load drive, 1
2: 2nd M03FET, l 3: 3rd M03FET
, l 4: 4th M03FET, 15: Variable resistance, 1
6: first comparator, 17: current detection circuit, 18: smoothing capacitor, 19: second comparator, 2θ: triangular wave generation circuit.
Claims (1)
制御用半導体装置において、負荷駆動用ＭＯ８ＦＥＴと
同じ導電型の第２Ｍ０ＳＦＥＴと、負荷駆動用ＭＯ３Ｆ
ＥＴとは反対の導電型の第３Ｍ０３ＦＥＴおよび第４Ｍ
Ｏ３ＦＭＴを備え、負荷駆動用ＭＯ３ＦＥＴと負荷との
直列回路に、−第２Ｍ０３ＦＥＴと第３Ｍ０３ＦＥＴと
の直列回路および第４Ｍ０３ＦＥＴと可変抵抗との直列
回路を並列に接続し、負荷駆動用ＭＯ３ＦＥＴと負荷と
の接続点の電位を一方の入力とし第２Ｍ０３ＦＥＴと第
３Ｍ０３ＦＥＴとの接続点の電位を他方の入力とする第
１比較器の出力ニヨり第３Ｍ０３ＦＥＴおよび第４Ｍ０
３ＦＥＴ（７）ゲート電圧を制御し、て、負荷駆動用Ｍ
Ｏ８ＦＥＴと第２Ｍ０３ＦＥＴおよび第３Ｍ０３ＦＥＴ
と第４Ｍ０３ＦＥＴ、をそれぞれカレントミラーとする
電流検出回路を構成し、前記可変抵抗の発生電圧を平滑
化した電圧と三角波発生回路からの三角波電圧と第２比
較器に入力し、第２比較器の出力により負荷駆動用ＭＯ
５ＦＥＴおよび第２Ｍ０３ＦＥＴのゲート電圧を制御し
て、負荷が短絡状態となった場合には負荷駆動用ＭＯ３
ＦＥＴをオフにし負荷への通電を停止するようにしたこ
とを特徴とする電力制御用半導体装置。In a power control semiconductor device that duty-controls a load current using a MOSFET, a second MOSFET of the same conductivity type as the load driving MO8FET and a load driving MO3F are used.
3rd M03FET and 4th M03FET of opposite conductivity type to ET
A series circuit of a second M03FET and a third M03FET and a series circuit of a fourth M03FET and a variable resistor are connected in parallel to a series circuit of a load driving MO3FET and a load. The output of the first comparator, which has the potential at the connection point as one input and the potential at the connection point between the second M03FET and the third M03FET as the other input, is the third M03FET and the fourth M03FET.
Controls the gate voltage of 3FET (7) and connects M for load driving.
O8FET, 2nd M03FET and 3rd M03FET
and a fourth M03FET as current mirrors, and input the voltage generated by the variable resistor into a smoothed voltage and the triangular wave voltage from the triangular wave generating circuit to a second comparator. MO for driving load by output
By controlling the gate voltage of the 5FET and the second M03FET, when the load is short-circuited, the load driving MO3
A semiconductor device for power control, characterized in that a FET is turned off to stop power supply to a load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18562483U JPS6095620U (en) | 1983-12-02 | 1983-12-02 | Semiconductor device for power control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18562483U JPS6095620U (en) | 1983-12-02 | 1983-12-02 | Semiconductor device for power control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6095620U true JPS6095620U (en) | 1985-06-29 |
Family
ID=30401164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18562483U Pending JPS6095620U (en) | 1983-12-02 | 1983-12-02 | Semiconductor device for power control |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6095620U (en) |
-
1983
- 1983-12-02 JP JP18562483U patent/JPS6095620U/en active Pending
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