2) The required tq (specified with dV
details of tq codes.
Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 2 of 12 October, 2014
/dt=200V/µs) is represented by a ‘#’ in the device part number. See ordering information for
dr
Page 3
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
Voltage Grade
V
DRM VDSM VRRM
V
V
RSM
V
VD VR
DC V
1200
1200
1300
810
1600
1600
1700
1020
I
GM
I
G
t
p1
4A/µs
Notes on Ratings and Characteristics
1.0 Voltage Grade Table
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 Extension of Turn-off Time
This Report is applicable to other tq/re-applied dv/dt combinations when supply has been agreed by
Sales/Production.
4.0 Repetitive dv/dt
Higher dv/dt selections are available up to 1000V/µs on request.
5.0 De-rating Factor
A blocking voltage de-rating factor of 0.13%/°C is applicable to this device for Tj below 25°C.
6.0 Snubber Components
When selecting snubber components, care must be taken not to use excessively large values of snubber
capacitor or excessively small values of snubber resistor. Such excessive component values may lead to
device damage due to the large resultant values of snubber discharge current. If required, please consult
the factory for assistance.
7.0 Rate of rise of on-state current
The maximum un-primed rate of rise of on-state current must not exceed 1000A/µs at any time during
turn-on on a non-repetitive basis. For repetitive performance, the on-state rate of rise of current must not
exceed 500A/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.
8.0 Gate Drive
The nominal requirement for a typical gate drive is illustrated below. An open circuit voltage of at least 30V
is assumed. This gate drive must be applied when using the full di/dt capability of the device.
The magnitude of IGM should be between five and ten times IGT, which is shown on page 2. Its duration
(tp1) should be 20µs or sufficient to allow the anode current to reach ten times IL, whichever is greater.
Otherwise, an increase in pulse current could be needed to supply the necessary charge to trigger. The
‘back-porch’ current IG should remain flowing for the same duration as the anode current and have a
magnitude in the order of 1.5 times IGT.
Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 3 of 12 October, 2014
Page 4
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
vqpulsettt
f
1
max
JKthAVKPAV
RWTfEW125 and
.)(max
(i) Qra is based on 50% Irm chord as shown in Fig. 1
Fig. 1
(ii) Qrr is based on a 150s integration time i.e.
s
rrrr
dtiQ
150
0
.
(iii)
2
1
t
t
FactorK
9.0 Frequency Ratings
The curves illustrated in figures 10 to 18 are for guidance only and are superseded by the maximum
ratings shown on page 1.
10.0 Square wave ratings
These ratings are given for load component rate of rise of forward current of 100 and 500 A/µs.
11.0 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.
12.0 Maximum Operating Frequency
The maximum operating frequency is set by the on-state duty, the time required for the thyristor to turn off
(tq) and for the off-state voltage to reach full value (tv), i.e.
13.0 On-State Energy per Pulse Characteristics
These curves enable rapid estimation of device dissipation to be obtained for conditions not covered by
the frequency ratings.
Let Ep be the Energy per pulse for a given current and pulse width, in joules
Let R
and TK be the heat sink temperature.
Then the average dissipation will be:
be the steady-state d.c. thermal resistance (junction to sink)
th(JK)
14.0 Reverse recovery ratings
Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 4 of 12 October, 2014
Page 5
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
JKthoriginalKnewK
RfkETT
)()(
fEWW
(original)(TOT)
fRETT
thoriginalKnewK
dt
di
S
r
C
V
R
4
2
Where:
Vr
CS
R
=
=
=
Commutating source voltage
Snubber capacitance
Snubber resistance
15.0 Reverse Recovery Loss
15.1 Determination by Measurement
From waveforms of recovery current obtained from a high frequency shunt (see Note 1, Page 5) 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 heat sink temperature can
then be evaluated from the following:
Where k=0.227 (°C/W)/s
E = Area under reverse loss waveform per pulse in joules (W.s.)
f = rated frequency Hz at the original heat sink temperature.
R
The total dissipation is now given by:
15.2 Determination without Measurement
In circumstances where it is not possible to measure voltage and current conditions, or for design
purposes, the additional losses E in joules may be estimated as follows.
Let E be the value of energy per reverse cycle in joules (curves in Figure 9).
Let f be the operating frequency in Hz
= d.c. thermal resistance (°C/W).
th(JK)
Where T
T
K (original)
A suitable R-C snubber network is connected across the thyristor to restrict the transient reverse voltage
to a peak value (Vrm) of 67% of the maximum grade. If a different grade is being used or Vrm is other than
67% of Grade, the reverse loss may be approximated by a pro rata adjustment of the maximum value
obtained from the curves.
NOTE 1- Reverse Recovery Loss by Measurement
This thyristor has a low reverse recovered charge and peak reverse recovery current. When measuring
the charge, care must be taken to ensure that:
(a) a.c. 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:
is the required maximum heat sink temperature and
K (new)
is the heat sink temperature given with the frequency ratings.
16.0 Computer Modelling Parameters
16.1 Calculating VT using ABCD Coefficients
Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 5 of 12 October, 2014
Page 6
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
TTTT
IDICIBAVln
25°C Coefficients
125°C Coefficients
A
-0.04923298
A
5.22761
B
0.9418825
B
-1.056685
C
2.513442 e-3
C
-5.150569 e
- 4
D
-0.1889025
D
0.1703342
np
p
t
pt
p
err
1
1
t = Duration of heating pulse in seconds.
rt = Thermal resistance at time t.
rp = Amplitude of pth term.
p
=
Time Constant of rth term.
D.C. Double Side Cooled
Term 1 2 3 4
rp
0.0200056
9.923438×10-3
0.01433715
4.284403×10-3
p
0.3391689
0.1269073
0.03562131
2.562946×10-3
D.C. Single Side Cooled
Term 1 2 3 4
5
rp
0.06157697
8.431182×10-3
0.01031315
0.01613806
5.181088×10-3
p
2.136132
1.212898
0.1512408
0.04244
2.889595×10-3
The on-state characteristic IT vs VT, on page 7 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, D, forming the coefficients of the representative equation for VT in
terms of IT given below:
The constants, derived by curve fitting software, are given in this report for hot and cold characteristics
where possible. The resulting values for VT agree with the true device characteristic over a current range,
which is limited to that plotted.
16.2 D.C. Thermal Impedance Calculation
Where p = 1 to n, n is the number of terms in the series.
Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 6 of 12 October, 2014
Page 7
Figure 1 - On-state characteristics of Limit device
Figure 2 - Transient thermal impedance
100
1000
10000
01234
Instantaneous on-state voltage - VT (V)
Instantaneous on-state current - I
T
(A)
125°C
25°C
0.0001
0.001
0.01
0.1
1
0.0000010.00010.011100
Time (s)
Transient Thermal Impedance - Zth, (k/W)
SSC 0.1K/W
DSC 0.05K/W
Figure 3 - Gate characteristics - Trigger limits
Figure 4 - Gate characteristics - Power curves
0
1
2
3
4
5
6
7
8
00.10.20.30.40.50.6
Gate Trigger Current - IGT (A)
Gate Trigger Voltage - V
GT
(V)
IGD, V
GD
IGT, V
GT
Max VG dc
Min V
G
Tj=25°C
125°C
25°C
-10°C
-40°C
0
2
4
6
8
10
12
14
16
18
20
0246810
Gate Trigger Current - IGT (A)
Gate Trigger Voltage - V
GT
(V)
PG 2W dc
PG Max 30W dc
Max VG dc
Tj=25°C
Min VG dc
R0472YC12x -16x
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Curves
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 7 of 12 October, 2014
Page 8
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
Figure 5 - Total recovered charge, Qrr
Figure 6 - Recovered charge, Qra (50% chord)
10
100
1000
1101001000
Commutation rate - di/dt (A/µs)
Total recovered charge - Q
rr
(µC)
Tj = 125°C
2000A
1000A
550A
200A
10
100
1000
1101001000
Commutation rate - di/dt (A/µs)
Recovered charge - Q
ra
(µC)
Tj = 125°C
2000A
1000A
550A
200A
Figure 7 - Peak reverse recovery current, Irm
Figure 8 - Maximum recovery time, trr (50% chord)
1
10
1101001000
Commutation rate - di/dt (A/µs)
Reverse recovery time - t
rr
(µs)
Tj = 125°C
2000A
1000A
550A
200A
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Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 8 of 12 October, 2014
Page 9
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
Figure 9 – Reverse recovery energy per pulse
Figure 10 - Sine wave energy per pulse
1
10
100
1000
1101001000
Commutation rate - di/dt (A/µs)
Energy per pulse - E
r
(J)
Tj = 125°C
V
rm
400V
2000A
1000A
550A
200A
1.00E-02
1.00E-01
1.00E+00
1.00E+01
1.00E+02
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Energy per pulse (J)
3kA
2kA
1kA
550A
Tj=125°C
200A
Figure 11 – Square wave energy per pulse
Figure 12 - Square wave energy per pulse
1.00E-02
1.00E-01
1.00E+00
1.00E+01
1.00E+02
1.00E+03
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Energy per pulse (J)
3kA
2kA
200A
1kA
550A
di/dt=100A/µs
Tj=125°C
1.00E-02
1.00E-01
1.00E+00
1.00E+01
1.00E+02
1.00E+03
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Energy per pulse (J)
Tj=125°C
di/dt=500A/µs
1kA
550A
200A
3kA
2kA
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Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 9 of 12 October, 2014
Page 10
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
Figure 13 - Sine wave frequency ratings
Figure 14 - Sine wave frequency ratings
1.00E+01
1.00E+02
1.00E+03
1.00E+04
1.00E+05
1.00E-051.00E-041.00E-031.00E-02
Pulse Width (s)
Frequency (Hz)
3kA
2kA
1kA
Tk=55°C
100% Duty Cycle
550A
200A
1.00E+00
1.00E+01
1.00E+02
1.00E+03
1.00E+04
1.00E+05
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Frequency (Hz)
3kA
200A
1kA
2kA
Tk=85°C
100% Duty Cycle
550A
Figure 15 - Square wave frequency ratings
Figure 16 - Square wave frequency ratings
1.00E+00
1.00E+01
1.00E+02
1.00E+03
1.00E+04
1.00E+05
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Frequency (Hz)
3kA
2kA
200A
550A
di/dt=100A/µs
Tk=55°C
100% Duty Cycle
1kA
1.00E+00
1.00E+01
1.00E+02
1.00E+03
1.00E+04
1.00E+05
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Frequency (Hz)
2kA
200A
1kA
550A
di/dt=500A/µs
Tk=55°C
100% Duty Cycle
3kA
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Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 10 of 12 October, 2014
Page 11
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
Figure 17 - Square wave frequency ratings
Figure 18 - Square wave frequency ratings
1.00E+01
1.00E+02
1.00E+03
1.00E+04
1.00E+05
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Frequency (Hz)
3kA
2kA
200A
1kA
550A
di/dt=100A/µs
Tk=85°C
100% Duty Cycle
1.00E+00
1.00E+01
1.00E+02
1.00E+03
1.00E+04
1.00E+05
1.00E-051.00E-041.00E-031.00E-02
Pulse width (s)
Frequency (Hz)
3kA
2kA
200A
1kA
di/dt=500A/µs
Tk=85°C
100% Duty Cycle
550A
Figure 19 - Maximum surge and I2t Ratings
1000
10000
100000
Total peak half sine surge current - I
TSM
(A)
1.00E+04
1.00E+05
1.00E+06
Maximum I
2
t (A
2
s)
13510151050100
Duration of surge (ms)
Duration of surge (cycles @ 50Hz)
Tj (initial) = 125°C
I2t: V
RRM
10V
I2t: 60% V
RRM
I
TSM
: V
RRM
10V
I
TSM
: 60% V
RRM
Gate may temporarily lose control of conduction angle
R0472YC12x -16x
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Data Sheet. Types R0472YC12x to R0472YC16x Issue 2 Page 11 of 12 October, 2014
Page 12
Distributed Gate Thyristor types R0472YC12x to R0472YC16x
W58 – 101A237
ORDERING INFORMATION (Please quote 10 digit code as below)
R0472
YC
x
Fixed
Type Code
Fixed
Outline Code
Voltage Code
V
DRM
/100
12, 16
tq Codes
E=25µs, F=30µs
Typical order code: R0472YC16F – 1600V V
RRM/VDRM
, 30µs tq, 15.1mm clamp height capsule.
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 IXYS UK Westcode Ltd.
In the interest of product improvement, IXYS UK Westcode Ltd reserves the right to change specifications at any time without
prior notice.
Devices with a suffix code (2-letter, 3-letter or letter/digit/letter combination) added to their generic code are not necessarily
subject to the conditions and limits contained in this report.