A blocking voltage de-rating factor of 0.13% per °C is applicable to this device for Tj below 25°C.
3.0 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:
where IF = instantaneous forward current.
4.0 Reverse recovery ratings
RRM
(V)
V
RSM
(V)
IDICIBAV⋅+⋅+⋅+=)ln(
FFFF
V
dc
R
(V)
(i) Qra is based on 50% Irm chord as shown in Fig.(a) below.
(ii) Qrr is based on a 150µs integration time.
s
µ
150
I.e.
(iii)
=
FactorK=
dtiQ
.
rrrr
∫
0
t
1
t
2
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1Page 3 of 11July, 2004
Page 4
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f
)
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5.0 Reverse Recovery Loss
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:
)(
Where k = 0.2314 (°C/W)/s
E
= Area under reverse loss waveform per pulse in joules (W.s.)
= Rated frequency in Hz at the original sink temperature.
R
The total dissipation is now given by:
This device has a low reverse recovered charge and peak reverse recovery current. When measuring the
charge, care must be taken to ensure that:
amplitude forward current.
to avoid overloading the internal amplifiers by the relatively high amplitude forward current signal.
= d.c. thermal resistance (°C/W)
th(J-Hs
originaltot
NOTE 1 - Reverse Recovery Loss by Measurement
(a) AC coupled devices such as current transformers are not affected by prior passage of high
(b) A suitable, polarised, clipping circuit must be connected to the input of the measuring oscilloscope
[]
fEWW
)()(
⋅+=
RfkETT⋅+⋅−=
thJKMAXjSINK
(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:
2
R
Where:Vr= Commutating source voltage
6.0 Snubber Components
When selecting snubber components, care m ust be taken not to us e excessively large values of snubber
capacitor or excessively sm all values of snubber re sistor. Such exc essive com ponent values may lead to
device damage due to the large resultant values of snubber dis charge current. If required, please cons ult
the factory for assistance.
V
⋅= 4
C
R = Snubber resistance
r
di
C
⋅
dt
S
= Snubber capacitance
S
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1Page 4 of 11July, 2004
Page 5
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7.0 Computer Modelling Parameters
7.1 Device Dissipation Calculations
I
=
AV
00
2
Where VT0 = 1.24V, rT = 0.33mΩ
4
2
2
rff
⋅⋅
T
WrffVV
⋅⋅⋅++−
AVTTT
ff = form factor (normally unity for fast diode applications)
∆
T
W
The forward characteristic I
(i) the well established V
((iiii))
=
AV
a set of constants A, B, C, and D forming the coefficients of the representative equation for V
R
th
TTT
−=∆
)(
7.2 Calculation of V
terms of I
given below:
F
kMAXj
using ABCD Coefficients
F
Vs VF, on page 6 is represented in two ways;
F
and rT tangent used for rating purposes and
T0
IDICIBAV⋅+⋅+⋅+=)ln(
FFFF
in
F
The constants, derived by curve fitting software, are given in this report for both hot and cold
characteristics. The resulting values for V
which is limited to that plotted.
A
B
C
D
8.0 Frequency Ratings
The curves illustrated in figures 8 to 16 are for guidance only and are superseded by the maxim um ratings
shown on page 1.
9.0 Square wave ratings
These ratings are given for load component rate of rise of forward current of 100 and 500 A/µs.
10.0 Duty cycle lines
The 100% duty cycle is represented on all the ratings by a straight line. Other duties can be included as
parallel to the first.
agree with the true device characteristic over a current range,
F
25°C Coefficients125°C Coefficients
0.9841510.704986
0.0533770.077106
8.09976×10
7.904892×10
-5
-3
1.018276×10
7.854346×10
-4
-3
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1Page 5 of 11July, 2004
Page 6
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Curves
Figure 1 – Forward characteristics of Limit deviceFigure 2 – Maximum forward recovery voltage
10000
M1022LC120-200
Issue 1
1000
M1022LC120-200
Issue 1
(A)
FM
1000
Instantaneous forward current - I
100
00.511.522.53
Maximum instantaneous forward voltage - V
Figure 3 - Recovered charge, Q
10000
M1022LC120-200
Issue 1
Tj = 125°C
(V)
FRM
25°C125°C
(V)
FM
rr
100
10
Maximum forward recovery voltage - V
1
10100100010000
Rate of rise of forward current - di/dt (A/µs)
Figure 4 - Recovered charge, Qra (50% chord)
1000
M1022LC120-200
Issue 1
Tj = 125°C
125°C
25°C
2000A
1500A
1000A
500A
(µC)
rr
2000A
1500A
1000
Total recovered charge - Q
100
1101001000
Commutation rate - di/dt (A/µs)
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1Page 6 of 11July, 2004
1000A
500A
(µC)
ra
100
Recovered charge - Q
10
1101001000
Commutation rate - di/dt (A/µs)
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Figure 5 - Maximum reverse current, I
1000
M1022LC120-200
Issue 1
Tj = 125°C
(A)
rm
100
Reverse recovery current - I
10
1101001000
Commutation rate - di/dt (A/µs)
rm
2000A
1500A
1000A
500A
Figure 6 - Maximum recovery time, trr (50% chord)
10
(µs)
rr
Recovery time - t
1
1101001000
Commutation rat e - di/dt (A/µs)
M1022LC120-200
Issue 1
Tj = 125°C
2000A
1500A
1000A
500A
Figure 7 – Reverse recovery energy per pulseFigure 8 - Sine wave energy per pulse
1000
M1022LC120-200
Issue 1
Tj = 125°C
V
=67%V
r
RRM
0.1µF, 10Ω Snubber
(mJ)
r
100
Energy per pulse - E
10
1101001000
Commmutation rate - di/dt (A/µs)
2000A
1000A
500A
250A
1.00E+02
1.00E+01
1.00E+00
Energy per pulse (J)
1.00E-01
1.00E-02
M1022LC120-200
Issue 1
Tj = 125°C
3000A
2000A
1500A
1000A
500A
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1Page 7 of 11July, 2004
Page 8
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A
A
A
A
A
WESTCODE An IXYS CompanySoft Recovery Diode Types M1022LC120 to M1022LC200
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Figure 9 - Sine wave frequency vs. pulse widthFigure 10 - Sine wave frequency vs. pulse width
1.00E+05
M1022LC120-200
Issue 1
TK = 55°C
1.00E+05
M1022LC120-200
Issue 1
TK = 85°C
500A
1.00E+04
1000A
1500A
1.00E+03
Frequency (Hz)
1.00E+02
1.00E+01
2000A
3000A
1.00E-051.00E-041.00E-031.00E-02
100% Duty Cycle
1.00E+04
1.00E+03
Frequency (Hz)
1.00E+02
1.00E+01
Pulse widt h (s )
500A
1000A
1500A
2000A
3000A
1.00E-051.00E-041.00E-031.00E-02
100% Duty Cycle
Pulse width (s)
Figure 11 - Square wave energy per pulseFigure 12 - Square wave energy per pulse
1.00E+03
1.00E+02
M1022LC120-200
Issue 1
di/dt =100A/µs
Tj = 125°C
1.00E+02
1.00E+01
M1022LC120-200
Issue 1
di/dt =500A/µs
Tj = 125°C
3000
2000
1500
1000
500
1.00E+01
Energy per pulse (J)
3000A
1.00E+00
1.00E-01
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1Page 8 of 11July, 2004
2000A
1500A
1000A
500A
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Energy per pulse (J)
1.00E+00
1.00E-01
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Page 9
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Figure 13 - Square wave frequency vs. pulse widthFigure 14 - Square wave frequency vs. pulse width
1.00E+05
1.00E+04
500A
1000A
M1022LC120-200
Issue 1
di/dt =100A/µs
100% Duty Cycle
TK=55°C
1.00E+05
1.00E+04
500A
M1022LC120-200
di/dt =500A/µs
100% Duty Cycle
Issue 1
TK = 55°C
1500A
2000A
1.00E+03
Frequency (Hz)
1.00E+02
1.00E+01
1.00E-051.00E-041.00E-031.00E-02
3000A
Pulse width (s)
1.00E+03
Frequency (Hz)
1.00E+02
1.00E+01
1000A
1500A
2000A
3000A
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Figure 15 - Square wave frequency vs. pulse widthFigure 16 - Square wave frequency vs. pulse width
1.00E+05
1.00E+04
500A
1000A
M1022LC120-200
Issue 1
di/dt =100A/µs
TK = 85°C
100% Duty Cycle
1.00E+05
1.00E+04
500A
M1022LC120-200
Issue 1
di/dt =500A/µs
TK = 85°C
100% Duty Cycle
1500A
1.00E+03
Frequency (Hz)
1.00E+02
1.00E+01
1.00E-051.00E-041.00E-031.00E-02
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1Page 9 of 11July, 2004
2000A
3000A
Pulse width (s)
1.00E+03
Frequency (Hz)
1.00E+02
1.00E+01
1000A
1500A
2000A
3000A
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Page 10
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Figure 17 – Maximum surge and I2t ratings
100000
(A)
FSM
10000
Total peak half sine surge curr ent - I
1000
M1022LC120-200
Issue 1
Tj (initial) = 125°C
I2t: V
RRM
≤10V
I2t: VR=60% V
I
: V
FSM
RRM
I
: VR=60% V
FSM
≤10V
13510151050100
Duration of surge (ms)Duration of surge (cycles @ 50Hz)
RRM
RRM
1.00E+07
1.00E+06
1.00E+05
s)
2
t (A
2
Maximum I
Figure 18 – Transient thermal impedance
0.1
M1022LC120-200
Issue 1
0.01
0.001
Thermal impedance (K/W)
0.0001
0.00010.0010.010.1110100
SSC 0.066K/W
DSC 0.033K/W
Time (s)
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1Page 10 of 11July, 2004
Page 11
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Outline Drawing & Ordering Information
ORDERING INFORMATION(Please quote 10 digit code as bel ow)
3540 Bassett Street
Santa Clara CA 95054 USA
Tel: +1 (408) 982 0700
Fax: +1 (408) 496 0670
E-mail: sales@ixys.net
The information contained herein is confidential and is 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 7he 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.