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An IXYS Company
Date:- 3 Aug, 2006
Data Sheet Issue:- 2
Provisional Data
High Power Sonic FRD
Type E1500NH48P
Absolute Maximum Ratings
VRRM
VRSM
VR(d.c.)
VOLTAGE RATINGS
Repetitive peak reverse voltage (note 1)
Non-repetitive peak reverse voltage (note 1)
Maximum reverse d.c. voltage (note 1)
OTHER RATINGS (note 6)
IF(AV)M
IF(AV)M
IF(AV)M
IF(RMS)
IF(d.c.)
IFSM
IFSM2
I2t
I2t
Tj op
Tstg
Mean forward current, Tsink=55°C (note 2)
Mean forward current. Tsink=100°C (note 2)
Mean forward current. Tsink=100°C (note 3)
Nominal RMS forward current, Tsink=25°C (note 2)
D.C. forward current, Tsink=25°C (note 4)
Peak non-repetitive surge tp=10ms, VRM=60%VRRM (note 5)
Peak non-repetitive surge tp=10ms, VRM10V (note 5)
I2t capacity for fusing tp=10ms, VRM=60%VRRM (note 5)
I2t capacity for fusing tp=10ms, VRM10V (note 5)
Operating temperature range
Storage temperature range
Notes:-
1) De-rating factor of 0.13% per °C is applicable for Tj below 25°C.
2) Double side cooled, single phase; 50Hz, 180° half-sinewave.
3) Single side cooled, single phase; 50Hz, 180° half-sinewave.
4) Double side cooled.
5) Half-sinewave, 140°C Tj initial.
6) Current (IF) ratings have been calculated using VT0 and rT (see page 2)
MAXIMUM
LIMITS
4800
4900
2800
UNITS
V
V
V
MAXIMUM
LIMITS
1280
780
480
2375
2125
17050
18750
1.45×106
1.76×106
-40 to +140
-40 to +140
UNITS
A
A
A
A
A
A
A
A2s
A2s
°C
°C
Provisional Data Sheet, Type E1500NH48P Issue 2
Page 1 of 11
August, 2006

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Characteristics
High Power Sonic FRD Type E1500NH48P
PARAMETER
VFM Maximum peak forward voltage
VT0 Threshold voltage
rT Slope resistance
VFRM Maximum forward recovery voltage
IRRM Peak reverse current
Qrr
Qra
Irm
trr
Qrr
Qra
Irm
trr
RthJK
trr
F
Wt
Recovered charge
Recovered charge
Reverse recovery current
Reverse recovery time, 50% Chord
Recovered charge
Recovered charge
Reverse recovery current
Reverse recovery time, 50% Chord
Thermal resistance, junction to heatsink
Reverse recovery time
Mounting force
Weight
MIN.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
19
-
TYP.
1.9
2.2
2.9
-
-
-
-
-
-
2750
1880
1425
2.8
935
635
390
3.2
-
-
-
250
MAX. TEST CONDITIONS (Note 1)
2.1
2.4
3.1
1.417
0.656
IFM=1500A, Tj=25°C
IFM=1500A
IFM=3000A
Current range 600A-1500A (Note 2)
60 di/dt = 1000A/µs, Tj=25°C
120 di/dt = 1000A/µs
10
80
-
2210
-
-
-
760
-
Rated VRRM, Tj=25°C
Rated VRRM
IFM=1000A, tp=1ms, di/dt=1000A/µs,
Vr=500V, 50% Chord. (note 3)
IFM=1350A, tp=1000µs, di/dt=200A/µs,
Vr=100V, 50% Chord.
-
0.019 Double side cooled
0.038 Single side cooled
26 (Note 4)
-
Notes:-
1) Unless otherwise indicated Tj=140°C.
2) VT0 and rT were used to calculate the current ratings illustrated on page one.
3) Figures 3-7 were compiled using these conditions.
4) For clamp forces outside these limits, please consult factory.
UNITS
V
V
m
V
mA
µC
µC
A
µs
µC
µC
A
µs
K/W
µs
kN
g
Provisional Data Sheet, Type E1500NH48P Issue 2
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Notes on Ratings and Characteristics
High Power Sonic FRD Type E1500NH48P
1.0 De-rating Factor
A blocking voltage de-rating factor of 0.13% per °C is applicable to this device for Tj below 25°C.
2.0 ABCD Constants
These constants (applicable only over current range of VF characteristic in Figure 1) are the coefficients of
the expression for the forward characteristic given below:
VF = A + B ln(I F ) + C I F + D I F
where IF = instantaneous forward current.
3.0 Reverse recovery ratings
(i) Qra is based on 50% Irm chord as shown in the figure below.
(ii) Qrr is based on a 150µs integration time.
150 µs
i.e. Qrr = irr .dt
0
(iii)
K
Factor
=
t1
t2
Provisional Data Sheet, Type E1500NH48P Issue 2
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4.0 Reverse Recovery Loss
High Power Sonic FRD Type E1500NH48P
The following procedure is recommended for use where it is necessary to include reverse recovery loss.
From waveforms of recovery current obtained from a high frequency shunt (see Note 1) and reverse
voltage present during recovery, an instantaneous reverse recovery loss waveform must be constructed.
Let the area under this waveform be E joules per pulse. A new sink temperature can then be evaluated
from:
[ ]TK = Tj(MAX ) E k + f RthJK
Where k = 0.2314 (°C/W)/s
E = Area under reverse loss waveform per pulse in joules (W.s.)
f = Rated frequency in Hz at the original sink temperature.
RthJK = d.c. thermal resistance (°C/W)
The total dissipation is now given by:
W(tot ) = W(original ) + E f
NOTE 1 - Reverse Recovery Loss by Measurement
This device has a low reverse recovered charge and peak reverse recovery current. When measuring the
charge, care must be taken to ensure that:
(a) AC coupled devices such as current transformers are not affected by prior passage of high
amplitude forward current.
(b) A suitable, polarised, clipping circuit must be connected to the input of the measuring oscilloscope
to avoid overloading the internal amplifiers by the relatively high amplitude forward current signal.
(c) Measurement of reverse recovery waveform should be carried out with an appropriate critically
damped snubber, connected across diode anode to cathode. The formula used for the calculation of this
snubber is shown below:
R2
=
4
Vr
CS di dt
Where: Vr = Commutating source voltage
CS = Snubber capacitance
R = Snubber resistance
Provisional Data Sheet, Type E1500NH48P Issue 2
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5.0 Computer Modelling Parameters
5.1 Device Dissipation Calculations
High Power Sonic FRD Type E1500NH48P
I AV = − VT 0 +
VT 02 + 4 ff 2 rT WAV
2 ff 2 rT
Where VT0 =1.417V, rT = 0.656m
ff = form factor (normally unity for fast diode applications)
WAV
=
T
Rth
T = Tj(MAX ) TK
5.2 Calculation of VF using ABCD Coefficients
The forward characteristic IF Vs VF, on page 6 is represented in two ways;
(i) the well established VT0 and rT tangent used for rating purposes and
(ii) a set of constants A, B, C, and D forming the coefficients of the representative equation for VF in
terms of IF given below:
VF = A + B ln(IF ) + C I F + D IF
The constants, derived by curve fitting software, are given in this report for both hot and cold
characteristics. The resulting values for VF agree with the true device characteristic over a current range,
which is limited to that plotted.
25°C Coefficients
A 1.244726
B -0.06647227
C 3.417340×10-6
D 0.03402272
150°C Coefficients
A 1.340995
B -0.1059655
C 3.735374×10-5
D 0.04593112
Provisional Data Sheet, Type E1500NH48P Issue 2
Page 5 of 11
August, 2006