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VRF2944 Datasheet(PDF) 3 Page - Microchip Technology

Part # VRF2944
Description  RF POWER VERTICAL MOSFET
PDF  6 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

VRF2944 Datasheet(HTML) 3 Page - Microchip Technology

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0
0.05
0.10
0.15
0.20
0.25
10-5
10-4
10-3
10-2
10
1.0
-1
VRF2944(MP)
Peak T J = P DM x Z θJC + TC
Duty Factor D =
t1/t2
t2
t1
Note:
t1 = Pulse Duration
RECTANGULAR PULSE DURATION (seconds)
Figure 5. Maximum Effective Transient Thermal Impedance Junction-to-Case vs Pulse Duration
0
100
200
300
400
500
600
700
800
0
0.5
1
1.5
2
2.5
3
0
10
20
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50
60
70
80
90
100
0
100
200 300
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500 600 700
P
IN, INPUT POWER (WATTS PEP)
Figure 6. P
OUT versus PIN
P
OUT, OUTPUT POWER (WATTS PEP)
Figure 7. EFFICIENCY versus P
IN
50V
40V
Freq=30MHz
Freq=30MHz
0.3
D = 0.9
0.7
SINGLE PULSE
0.5
0.1
0.05
50V
40V
FIGURE 5b, TRANSIENT THERMAL IMPEDANCE MODEL
.0052
Dissipated Power
(Watts)
T
J ( C)
T
C ( C)
Z
EXT are the external thermal
impedances: Case to sink,
sink to ambient, etc. Set to
zero when modeling only
the case to junction.
.0408
.0981
.071
.0016
.0030
.0133
.0366
20
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26
0
100
200 600 400
500
600
700
P
OUT, OUTPUT POWER (WATTS PEP)
Figure 7. GAIN versus P
OUT
60V
50V
Freq=30MHz
60V
60V
40V



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