2.0 Extension of Voltage Grades
This report is applicable to other and higher voltage grades when supply has been agreed by
Sales/Production.
3.0 De-rating Factor
A blocking voltage de-rating factor of 0.13%/°C is applicable to this device for Tj below 25°C.
4.0 Repetitive dv/dt
Standard dv/dt is 1000V/µs.
5.0 Rate of rise of on-state current
The maximum un-primed rate of rise of on-state current must not exceed 300A/µs at any time during turnon on a non-repetitive basis. For repetitive performance, the on-state rate of rise of current must not
exceed 150A/µs at any time during turn-on. Note that these values of rate of rise of current apply to the
total device current including that from any local snubber network.
6.0 Gate Drive
The recommended pulse gate drive is 30V, 15Ω with a short-circuit current rise time of not more than
0.5µs. This gate drive must be applied when using the full di/dt capability of the device.
DRM VDSM VRRM
V
V
RSM
V
V
V
D
DC V
R
The pulse duration may need to be configured according to the application but should be no shorter than
20µs, otherwise an increase in pulse current may be needed to supply the necessary charge to trigger.
7.0 Computer Modelling Parameters
7.1 Device Dissipation Calculations
T
2
4
I
=
AV
Where V0=1.0V, rs=0.437mΩ,
R
= Supplementary thermal impedance, see table below.
th
00
rff
2
⋅⋅
s
WrffVV
⋅⋅⋅++−
AVs
and:
W
AV
=
∆
R
th
max
TTT
−=∆
Hsj
ff = Form factor, see table below.
Supplementary Thermal Impedance
Conduction Angle30°60°90°120°180°270°d.c.
Square wave Double Side Cooled0.02980.02790.02650.02540.0240.02270.022
Square wave Single Side Cooled0.05180.05030.04910.04820.04680.04540.044
Sine wave Double Side Cooled0.0280.02580.02460.02380.0224
Sine wave Single Side Cooled0.05050.04880.04770.04680.0449
Form Factors
Conduction Angle30°60°90°120°180°270°d.c.
Square wave3.462.4521.731.411.151
Sine wave3.982.782.221.881.57
Data Sheet. Types N1314NC300 to N1314NC360 Issue 2Page 3of 10August, 2008
Page 4
WESTCODE An IXYS CompanyPhase Control Thyristor types N1314NC300 to N1314NC360
p
p
7.2 Calculating VT using ABCD Coefficients
The on-state characteristic I
(i) the well established V
(ii) a set of constants A, B, C, D, forming the coefficients of the representative equation for V
terms of I
The constants, derived by curve fitting software, are given below for hot characteristics. The resulting
values for V
7.3 D.C. Thermal Impedance Calculation
Where p = 1 to n, n is the number of terms in the series and:
t = Duration of heating pulse in seconds.
r
= Thermal resistance at time t.
t
= Amplitude of pth term.
r
= Time Constant of rth term.
τ
given below:
T
agree with the true device characteristic over a current range, which is limited to that plotted.
T
A0.558211A0.276802072
B0.05818532B0.107206
C3.1622×10
D3.43124×10
vs. VT, on page 5 is represented in two ways;
T
and rs tangent used for rating purposes and
0
()
25°C Coefficients125°C Coefficients
-4
-3
=
∑
=
p
C3.86244×10
D1.45895×10
np
err
1
pt
1
−⋅=
−
t
τ
p
in
T
IDICIBAV⋅+⋅+⋅+=ln
TTTT
-4
-4
D.C. Double Side Cooled
Term1234
r
p
τ
p
Term1234
r
p
τ
p
8.0 Reverse recovery ratings
(i) Qra is based on 50% Irm chord as shown in Fig. 1.
is based on a 150µs integration time.
(ii) Q
rr
i.e.
(iii)
0.01265.987×10
0.9690.15050.02542.81×10
D.C. Single Side Cooled
0.029544.559×10
5.8641.1420.1544.27×10
s
µ
150
=
FactorK=
dtiQ
.
rrrr
∫
0
t
1
t
2
-3
-3
1.796×10
8.16×10
-3
-3
1.536×10
2.299×10
Fig. 1
-3
-3
-3
-3
Data Sheet. Types N1314NC300 to N1314NC360 Issue 2Page 4of 10August, 2008
Page 5
WESTCODE An IXYS CompanyPhase Control Thyristor types N1314NC300 to N1314NC360
1590 Buckeye Drive
Milpitas CA 95035-7418 USA
Tel: +1 (408) 457-9000
Fax: +1 (408) 496 0670
E-mail: sales@ixys.net
The information contained herein is confidential and i s protected by Copyright. The information may not be used or
disclosed except with the written permission of and in the manner permitted by the proprietors Westcode Semiconductors
Ltd.
In the interest of product improvement, Westcode reserves the right to change specifications at any time without prior
notice.
Devices with a suffix code (2-letter or letter/digit/letter combination) added to their generic code are not necessarily subject
to the conditions and limits contained in this report.