JPH0472878U - - Google Patents
Info
- Publication number
- JPH0472878U JPH0472878U JP11346990U JP11346990U JPH0472878U JP H0472878 U JPH0472878 U JP H0472878U JP 11346990 U JP11346990 U JP 11346990U JP 11346990 U JP11346990 U JP 11346990U JP H0472878 U JPH0472878 U JP H0472878U
- Authority
- JP
- Japan
- Prior art keywords
- gate
- gto
- steady
- switch
- power supply
- 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 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Power Conversion In General (AREA)
Description
第１図は本考案のＧＴＯゲート駆動回路の一実
施例を示す接続図、第２図は本考案のＧＴＯゲー
ト駆動回路の作用を示すグラフ、第３図は本考案
のＧＴＯゲート駆動回路の他の実施例を示す接続
図、第４図はＧＴＯ駆動電流を示す説明図、第５
図は従来のＧＴＯ駆動回路を示す接続図、第６図
はＧＴＯの接合部温度とゲート電流の関係を示す
グラフである。
１Ａ……ハイアーゲート用直流電源、１Ｂ……
定常オンゲート用直流電源、１Ｃ……オフゲート
用直流電源、２Ａ……ハイアーゲート用スイツチ
、２Ｂ……定常オンゲート用スイツチ、２Ｃ……
オフゲート用スイツチ、３……ハイアーゲート用
抵抗、４Ａ，４Ｂ，４Ｃ……定常オンゲート用抵
抗、５Ｂ，５Ｃ……スイツチ、６……オフゲート
用コンデンサ、７……ＧＴＯ、８……温度検出部
、１１……ハイアーゲート制御回路、１２……定
常オンゲート制御回路、１３……オフゲート制御
回路、１４……ゲート電流制御回路。
Fig. 1 is a connection diagram showing one embodiment of the GTO gate drive circuit of the present invention, Fig. 2 is a graph showing the operation of the GTO gate drive circuit of the present invention, and Fig. 3 is a diagram showing other embodiments of the GTO gate drive circuit of the present invention. Fig. 4 is an explanatory diagram showing the GTO drive current, Fig. 5 is a connection diagram showing an example of
The figure is a connection diagram showing a conventional GTO drive circuit, and FIG. 6 is a graph showing the relationship between the junction temperature and gate current of the GTO. 1A...DC power supply for Higher Gate, 1B...
DC power supply for steady on gate, 1C...DC power supply for off gate, 2A...Switch for higher gate, 2B...Switch for steady on gate, 2C...
Switch for off-gate, 3... Resistor for higher gate, 4A, 4B, 4C... Resistor for steady-state on-gate, 5B, 5C... Switch, 6... Capacitor for off-gate, 7... GTO, 8... Temperature detection section, 11... Higher gate control circuit, 12... Steady on gate control circuit, 13... Off gate control circuit, 14... Gate current control circuit.
Claims (1)
、スイツチ及び抵抗からなるハイアーゲート回路
と、前記ＧＴＯのターンオン状態を維持する定常
オンゲート電源、スイツチ及び抵抗からなる定常
オンゲート回路と、前記ＧＴＯをターンオフさせ
るオフゲート電源、スイツチ及びコンデンサから
なるオフゲート回路と、前記各スイツチをＯＮ・
ＯＦＦする制御回路を備えたＧＴＯゲート駆動回
路において、前記ＧＴＯの温度を検出する手段と
、この温度検出手段の出力で前記ＧＴＯの定常オ
ンゲート電流を前記検出温度に逆比例して増減さ
せる手段を設けたことを特徴とするＧＴＯゲート
駆動回路。 A higher gate circuit consisting of a higher gate power supply, a switch and a resistor that turns on the GTO; a steady on gate circuit consisting of a steady on gate power supply, a switch and a resistor that maintains the turned on state of the GTO; and an off gate power supply, a switch and a resistor that turns off the GTO. The off-gate circuit consisting of a capacitor and each of the above switches are turned on and off.
A GTO gate drive circuit including a control circuit that turns off, comprising means for detecting the temperature of the GTO, and means for increasing or decreasing the steady-state on-gate current of the GTO in inverse proportion to the detected temperature using the output of the temperature detection means. A GTO gate drive circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11346990U JPH0472878U (en) | 1990-10-31 | 1990-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11346990U JPH0472878U (en) | 1990-10-31 | 1990-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0472878U true JPH0472878U (en) | 1992-06-26 |
Family
ID=31861062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11346990U Pending JPH0472878U (en) | 1990-10-31 | 1990-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0472878U (en) |
-
1990
- 1990-10-31 JP JP11346990U patent/JPH0472878U/ja active Pending