MMFT3055VL Motorola, MMFT3055VL Datasheet - Page 5

• Manufacturer Part Number: MMFT3055VL
• Description: TMOS POWER FET 1.5 AMPERES 60 VOLT
• Manufacturer: Motorola

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 (T C ) 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–General
Data and Its Use.”
verse any load line provided neither rated peak current (I DM )
nor rated voltage (V DSS ) is exceeded and the transition time
(t r ,t f ) do not exceed 10 s. In addition the total power aver-
aged over a complete switching cycle must not exceed
(T J(MAX) – T C )/(R JC ).
in switching circuits with unclamped inductive loads. For reli-
Motorola TMOS Power MOSFET Transistor Device Data
The Forward Biased Safe Operating Area curves define
Switching between the off–state and the on–state may tra-
A Power MOSFET designated E–FET can be safely used
10
9
8
7
6
5
4
3
2
1
0
0
Figure 8. Gate–To–Source and Drain–To–Source
Q1
1
Q3
2
Voltage versus Total Charge
3
Q2
Q T , TOTAL CHARGE (nC)
4
QT
5
DRAIN–TO–SOURCE DIODE CHARACTERISTICS
1.6
1.4
1.2
0.8
0.6
0.4
0.2
6
1
0
0.6 0.625
Figure 10. Diode Forward Voltage versus Current
V DS
V GS = 0 V
T J = 25 C
7
V GS
8
V SD , SOURCE–TO–DRAIN VOLTAGE (VOLTS)
0.65
SAFE OPERATING AREA
I D = 1.5 A
T J = 25 C
9
0.675
10
30
27
24
21
18
15
12
9
6
3
0
0.7 0.725
able operation, the stored energy from circuit inductance dis-
sipated in the transistor while in avalanche must be less than
the rated limit and 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.
to–source avalanche at currents up to rated pulsed current
(I DM ), the energy rating is specified at rated continuous cur-
rent (I D ), in accordance with industry custom. The energy rat-
ing must be derated for temperature as shown in the
accompanying graph (Figure 13). Maximum energy at cur-
rents below rated continuous I D can safely be assumed to
equal the values indicated.
0.75
Although many E–FETs can withstand the stress of drain–
1000
100
10
1
1
0.775
V DD = 30 V
I D = 1.5 A
V GS = 5 V
T J = 25 C
0.8
Figure 9. Resistive Switching Time
Variation versus Gate Resistance
0.825 0.85
t d(off)
R G , GATE RESISTANCE (OHMS)
t d(on)
t f
t r
10
MMFT3055VL
5
100