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QP12W05S-37 Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd.

Part # QP12W05S-37
Description  Hybrid Integrated IGBT Driver
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Manufacturer  MORNSUN [MORNSUN Science& Technology Ltd.]
Direct Link  http://www.mornsun-power.com
Logo MORNSUN - MORNSUN Science& Technology Ltd.

QP12W05S-37 Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd.

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The copyright and authority for the interpretation of the products are reserved by Mornsun
Specifications subject to change without notice.
QP12W 05S-37
A/1-2009
Page 2 of 3
Definition of Characteristics
1) Operation of short circuit protection
ttimer
0V
-5V
0V
90%
Ttrip
VI
Vg
2) Switching operation
VI
Vg
90%
50%
10%
tf
tPHL
tr
tPLH
Definition of Adjustment
1) Adjustment of soft turn-off time:
(Operation of short circuit protection)
When a desaturation is detected the hybrid gate driver performs
a soft shutdown of the IGBT. The Soft turn-off time is 4.5uS. You can
connect an Rf or Cf to adjust the Soft turn-off time. (Connecting Rf will
increase the soft turn-off time and connecting Cf will decrease the soft
turn-off time.) The soft turn-off time must be set 2.5uS< Tcf <10uS.
Please refer to the below table.
0V
0V
90%
VI
Vg
Tcf
Tcf
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0
0.5
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
VD=15V
Ta=25℃
Resistor Rf () (PIN:14-15)
The reference curve of
soft turn-off time & Rf
The reference curve of
soft turn-off time & Cf
20
18
16
14
12
10
8
6
4
0
2
50
45
40
35
30
25
20
15
10
5
0
VD=15V
Ta=25℃
Tcf
(PIN:10-14)
Capactiance Cf (pF)
The soft turn-off time & Rf ,Cf
Rf (Ω)
Tcf (μS)
Cf (nF)
Tcf(μS)
4.5
4.5
1500
4.0
1
4.9
500
3.5
3.3
5.3
300
3.0
10
6.5
110
2.5
22
9.3
2) Adjustment of short-circuit detection time delay
(Operation of short circuit protection)
The short-circuit detection time delay is defined between the time
in which a desaturation is detected and the time in which the gate
voltage fall down to 90% of extent. This diver have a minimum
short-circuit detection time delay, and you can adjust the short-circuit
detection time delay by connecting the capacitor (Ctrip) between
PIN12 and 16. But the short-circuit detection time delay must be set
less than 3.5uS. Please refer to below table.(the data only for refer)
0V
0V
90%
VI
Vg
-5V
ttrip
The short-circuit detection time delay & capacitor Ctrip
Ctrip (nF)
Ttrip(
μS)
1.6
0.33
1.8
1.0
2.2
2.2
2.4
3.3
2.6
The reference curve of Controlled time
detect short circuit & Ctrip
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0
0.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
VD=15V
Ta=25℃
Ttrip
capactance Ctrip (nF) (PIN10-16)


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