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參數(shù)資料
| 型號(hào)： | MTB75N05HD |
| 廠商： | MOTOROLA INC |
| 元件分類： | JFETs |
| 英文描述： | TMOS POWER FET 75 AMPERES 50 VOLTS |
| 中文描述： | 75 A, 50 V, 0.0095 ohm, N-CHANNEL, Si, POWER, MOSFET |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大?。?/td> | 254K |
| 代理商： | MTB75N05HD |
6
Motorola TMOS Power MOSFET Transistor Device Data
SAFE OPERATING AREA
The Forward Biased Safe Operating Area curves define
the maximum simultaneous drain–to–source voltage and
drain current that a transistor can handle safely when it is for-
ward biased. Curves are based upon maximum peak junc-
tion temperature and a case temperature (TC) of 25
°
C. Peak
repetitive pulsed power limits are determined by using the
thermal response data in conjunction with the procedures
discussed in AN569, “Transient Thermal Resistance – Gen-
eral Data and Its Use.”
Switching between the off–state and the on–state may tra-
verse any load line provided neither rated peak current (IDM)
nor rated voltage (VDSS) is exceeded, and that the transition
time (tr, tf) does not exceed 10
μ
s. In addition the total power
averaged over a complete switching cycle must not exceed
(TJ(MAX) – TC)/(R
θ
JC).
A power MOSFET designated E–FET can be safely used
in switching circuits with unclamped inductive loads. For reli-
able operation, the stored energy from circuit inductance dis-
sipated in the transistor while in avalanche must be less than
the rated limit and must be adjusted for operating conditions
differing from those specified. Although industry practice is to
rate in terms of energy, avalanche energy capability is not a
constant. The energy rating decreases non–linearly with an
increase of peak current in avalanche and peak junction tem-
perature.
Although many E–FETs can withstand the stress of drain–
to–source avalanche at currents up to rated pulsed current
(IDM), the energy rating is specified at rated continuous cur-
rent (ID), in accordance with industry custom. The energy rat-
ing must be derated for temperature as shown in the
accompanying graph (Figure 12). Maximum energy at cur-
rents below rated continuous ID can safely be assumed to
equal the values indicated.
0
50
TJ, STARTING JUNCTION TEMPERATURE (
°
C)
EA
Figure 12. Maximum Rated Forward Biased
Safe Operating Area
0.1
1
100
VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS)
Figure 13. Maximum Avalanche Energy versus
Starting Junction Temperature
1
10
100
1000
A
I
RDS(on) LIMIT
THERMAL LIMIT
PACKAGE LIMIT
0.1
25
50
75
100
125
10
VGS = 20 V
SINGLE PULSE
TC = 25
°
C
500
300
200
100
ID = 75 A
400
100
μ
s
dc
175
150
450
350
250
150
1 ms
10 ms
10
μ
s
t, TIME (s)
Figure 14. Thermal Response
0.1
1
0.01
1.0E– 05
1.0E+01
r
(
R
θ
JC(t) = r(t) R
θ
JC
R
θ
JC = 1.0
°
C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) – TC = P(pk) R
θ
JC(t)
P(pk)
t1
t2
DUTY CYCLE, D = t1/t2
0.2
0.05
0.02
0.01
0.1
1.0E– 04
1.0E– 03
1.0E– 02
1.0E– 01
1.0E+00
D = 0.5
SINGLE PULSE
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