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PDF R1275NC14M Data sheet ( Hoja de datos )

Número de pieza R1275NC14M
Descripción Distributed Gate Thyristor
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Date:- 01 August 2012
Data Sheet Issue:- 3
Distributed Gate Thyristor
Types R1275NC14x to R1275NC21x
Absolute Maximum Ratings
VDRM
VDSM
VRRM
VRSM
VOLTAGE RATINGS
Repetitive peak off-state voltage, (note 1)
Non-repetitive peak off-state voltage, (note 1)
Repetitive peak reverse voltage, (note 1)
Non-repetitive peak reverse voltage, (note 1)
IT(AV)M
IT(AV)M
IT(AV)M
IT(RMS)
IT(d.c.)
ITSM
ITSM2
I2t
I2t
(di/dt)cr
VRGM
PG(AV)
PGM
Tj op
Tstg
OTHER RATINGS
Maximum average on-state current, Tsink=55°C, (note 2)
Maximum average on-state current. Tsink=85°C, (note 2)
Maximum average on-state current. Tsink=85°C, (note 3)
Nominal RMS on-state current, Tsink=25°C, (note 2)
D.C. on-state current, Tsink=25°C, (note 4)
Peak non-repetitive surge tp=10ms, Vrm=0.6VRRM, (note 5)
Peak non-repetitive surge tp=10ms, Vrm10V, (note 5)
I2t capacity for fusing tp=10ms, Vrm=0.6VRRM, (note 5)
I2t capacity for fusing tp=10ms, Vrm10V, (note 5)
Critical rate of rise of on-state current (repetitive), (Note 6)
Critical rate of rise of on-state current (non-repetitive), (Note 6)
Peak reverse gate voltage
Mean forward gate power
Peak forward gate power
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, 125°C Tj initial.
6) VD=67% VDRM, IFG=2A, tr0.5µs, Tcase=125°C.
MAXIMUM
LIMITS
1400-2100
1400-2100
1400-1800
1500-1900
UNITS
V
V
V
V
MAXIMUM
LIMITS
1275
861
508
2541
2147
15.5
17
1.20×106
1.45×106
1000
1500
5
2
30
-40 to +125
-40 to +150
UNITS
A
A
A
A
A
kA
kA
A2s
A2s
A/µs
A/µs
V
W
W
°C
°C
Data Sheet. Types R1275NC14x to R1275NC21x Issue 3
Page 1 of 12
August 2012

1 page




R1275NC14M pdf
Distributed Gate Thyristor Types R1275NC14x to R1275NC21x
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:
( )TSINK (new) = TSINK (original ) E k + f Rth(J Hs )
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.
Rth(J-Hs) = d.c. thermal resistance (°C/W).
The total dissipation is now given by:
W(TOT) = W(original) + E f
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
( )TSINK (new) = TSINK (original ) E Rth f
Where TSINK (new) is the required maximum heat sink temperature and
TSINK (original) is the heat sink temperature given with the frequency ratings.
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:
R2 = 4 Vr
CS
di
dt
Vr = Commutating source voltage
Where: CS = Snubber capacitance
R = Snubber resistance
Data Sheet. Types R1275NC14x to R1275NC21x Issue 3
Page 5 of 12
August 2012

5 Page





R1275NC14M arduino
Distributed Gate Thyristor Types R1275NC14x to R1275NC21x
Figure 17 - Square wave energy per pulse
1.00E+03
R1275NC14x-21x
Issue 3
di/dt=100A/µs
Tj=125°C
1.00E+02
Figure 18 - Square wave energy per pulse
1.00E+03
R1275NC14x-21x
Issue 3
di/dt=500A/µs
Tj=125°C
1.00E+02
1.00E+01
5kA
1.00E+00
3kA
2kA
1.5kA
1.00E-01 1kA
1.00E+01
5kA
3kA
2kA
1.00E+00
1.00E-01
1.5kA
1kA
500A
500A
1.00E-02
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
1.00E-02
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
Figure 19 - Maximum surge and I2t Ratings
100000
Gate may temporarily lose control of conduction angle
I2t: VRRM10V
I2t: 60% VRRM
1.00E+07
10000
1.00E+06
ITSM: VRRM10V
ITSM: 60% VRRM
1000
1
3 5 10 1
5 10
Tj (initial) = 125°C
R1275NC14x-21x
Issue 3
50 100
1.00E+05
Duration of surge (ms)
Duration of surge (cycles @ 50Hz)
Data Sheet. Types R1275NC14x to R1275NC21x Issue 3
Page 11 of 12
August 2012

11 Page







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