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參數(shù)資料
| 型號： | AN4571 |
| 英文描述： | GDU9X-XXXXX. for use with GTO gate drive units |
| 中文描述： | GDU9X - 20148。與GTO的門驅(qū)動裝置的使用 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 118K |
| 代理商： | AN4571 |
GDU 9X-XXXXX Series
1/9
A range of Gate Drive Units (GDU) is available to control Dynex Semiconductor Gate Turn-Off Thyristors (GTO). These units provide
the recommended waveforms for reliable switching of GTOs and have the following features:-
I
Input signal to the GDU (to turn the GDU ON and OFF) or output
signal (that indicates the presence of GTO gate to cathode
negative voltage) can be specified for either opto-couplers or fibre
optics.
I
An output signal that monitors the GTO gate to cathode negative
voltage. This voltage is monitored at the GDU GTO gate output
connections or the GTO gate sense leads if they are wired to the
GDU.
I
At initial switch-on a safe start up is achieved by incorporating an
inhibit of GTO gate pulses until the power supplies stabilise.
I
Each power supply voltage is continuously monitored, if it falls
below a preset level an OFF signal is sent to the GTO and further
ON pulses are inhibited until the power supply recovers.
I
Adjustable inhibit of short ON pulses. This prevents the GTO
switching ON from signals that may be false.
I
Adjustable minimum ON pulse width. This ensures that when the
GTO is turned ON it is ON for a time that fully discharges the
snubber capacitor.
I
Adjustable minimum OFF pulse width. This ensures that the
GTO is turned OFF for longer than its' turn-off time.
GTO GATE DRIVE UNITS
This application note should be used in conjunction with individual Gate Drive Unit datasheets which contain electrical, timing and outline
information.
I
(A)
I
(A)
Q
GQM
(
μ
I
(A)
dI
FG
/dt
(A/
μ
s)
I
(A)
t
w1(min)
dI
GQ
/dt
(A/
μ
s)
V
RG(min)
V
RG(max)
Recommended
Gate Drive
GTO
GTO/GATE DRIVE RECOMMENDATIONS
Recommended Gate Drive Conditions
DGT304SE
700
120
700
GDU 91-202XX
20
20
2
4.5
15
2
16
DG306AE
600
190
1300
GDU 91-202XX
20
20
2
10
15
2
16
DG406BP
1000
420
3000
GDU 91-202XX
30
30
4
10
30
2
16
DG408BP
1000
420
3000
GDU 91-202XX
30
30
4
20
30
2
16
DG646BH
2000
650
6600
GDU 90-204XX
30
30
7
20
40
2
16
DG648BH
2000
690
6000
GDU 90-204XX
30
30
7
20
40
2
16
DG758BX
3000
830 10000
GDU 90-203XX
40
40
8
10
40
2
16
DG856BW
3000
850 10500
GDU 90-207XX
40
40
10
20
40
2
16
DG858BW
3000
850 12000
GDU 90-207XX
40
40
10
20
40
2
16
DG858DW
3000
950 12500
GDU 90-207XX
40
40
10
20
40
2
18
DGT409BCA
800
350
3600
GDU 91-202XX
30
30
4
20
30
2
15
GDU 9X-XXXXX Series
GTO Gate Drive Units
Application Note
AN4571-6.0 January 2000
Replaces March 1998 version, AN4571 - 5.1
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