SD2942W [STMICROELECTRONICS]
350W - 50V HF/VHF DMOS PUSH-PULL TRANSISTOR;
| 型号： | SD2942W |
| 厂家： | 
ST |
| 描述： | 350W - 50V HF/VHF DMOS PUSH-PULL TRANSISTOR 晶体 晶体管 |
| 文件： | 总14页 (文件大小：352K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SD2942
RF Power Transistors
HF/VHF/UHF N - Channel MOSFETs
General Features
■ GOLD METALLIZATION
■ EXCELLENT THERMAL STABILITY
■ COMMON SOURCE CONFIGURATION,
PUSH PULL
■ P
= 350W MIN. WITH 15dB GAIN @
OUT
175MHz
■ LOW R
M244 Epoxy sealed
DS(on)
Pin Connection
1
1
Description
The SD2942 is a gold metallized N-Channel MOS
field-effect RF power transistor. The SD2942
offers 25% lower R
than industry standard
ds(ON)
and 20% higher power saturation than ST
SD2932. These characteristics make the SD2942
ideal for 50V DC very high power application up to
250 MHz.
3
3
1. Drain
2. Gate
2
2
3. Source
Order Codes
Part Number
Marking
Package
M244
Packaging
Plastic Tray
SD2942
SD2942
Rev 1
1/14
October 2005
www.st.com
14
SD2942
Contents
1
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
1.2
1.3
Maximum Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Thermal Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical Characteristics (T
= 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CASE
2
3
4
5
6
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Test Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2/14
SD2942
1 Electrical Data
1
Electrical Data
1.1
Maximum Rating
Table 1.
Absolute Maximum Rating (T
= 25°C)
CASE
Symbol
Parameter
Value
Unit
(1)
Drain Source Voltage
130
V
V
(BR)DSS
(1)
V
Drain-Gate Voltage (R = 1MΩ)
130
±20
V
V
GS
DGR
V
Gate-Source Voltage
Drain Current
GS
I
40
A
D
P
Power Dissipation
500
W
°C
°C
DISS
T
Max. Operating Junction Temperature
Storage Temperature
+200
J
T
-65 to +150
STG
1. TJ = 150 °C
1.2
Thermal Data
Table 2.
Symbol
Thermal data
Parameter
Junction to Case thermal resistance
Value
Unit
R
0.35
°C/W
thJC
3/14
1 Electrical Data
SD2942
1.3
Electrical Characteristics (TCASE = 25°C)
Table 3.
Static (per section)
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
(1)
V
= 0 V
I
= 100 mA
130
V
V
GS
DS
(BR)DSS
I
V
V
V
V
V
V
V
V
= 0 V
= 20 V
= 10 V
= 10 V
= 10 V
= 0 V
V
V
= 50 V
= 0 V
50
250
4
µA
nA
V
DSS
GS
GS
DS
GS
DS
GS
GS
GS
DS
DS
I
GSS
V
I = 250 mA
1.5
5
GS(Q)
D
V
I = 10 A
3.0
V
DS(ON)
D
G
I = 5 A
mho
pF
pF
pF
FS
D
C
V
= 50 V
= 50 V
= 50 V
f = 1 MHz
f = 1 MHz
f = 1 MHz
415
236
17
ISS
DS
DS
DS
C
= 0 V
V
V
OSS
C
= 0 V
RSS
1. TJ = 150°C
Table 4.
Symbol
Dynamic
Test Conditions
= 500 mA
Min.
350
15
Typ.
Max.
Unit
W
P
V
V
V
V
= 50 V
I
I
I
I
f = 175MHz
f = 175MHz
f = 175MHz
f = 175MHz
OUT
DD
DD
DD
DD
DQ
DQ
DQ
DQ
G
= 50 V
= 50 V
= 50 V
= 500 mA P
= 500 mA P
= 350 W
= 350 W
350 W
17
61
dB
%
PS
OUT
OUT
η
55
D
= 500 mA P
Load
Mismatch
OUT =
5:1
VSWR
All Phase Angles
4/14
SD2942
2 Impedance
2
Impedance
Figure 1. Impedance Data Schematic
D
ZDL
Typical Drain
Load Impedance
Typical Input
Impedance
G
ZIN
S
Table 5.
Impedance Data
Z
(Ω)
Z
(Ω)
DL
f
IN
250 MHz
230 MHz
200 MHz
175 MHz
100 MHz
50 MHz
1.3 - j 1.9
1.2 - j 1.8
1.1 - j 1.6
1.0 - j 1.4
1.8 - j 2.5
3.2 - j 4.4
1.9 + j 3.2
2.1 + j 3.7
2.7 +j 4.2
3.3 + j 4.8
7.5 + j 9
10 + j 12
5/14
3 Typical Performance
SD2942
3
Typical Performance
Figure 2. Capacitance Vs Drain Voltage
Figure 3. Drain Current Vs Gate Voltage
1000
20
18
16
14
12
10
8
CISS
Vds = 10 V
COSS
100
CRSS
10
6
Freq = 1 MHz
4
Tc = +80 °C
Tc = +25 °C
Tc = -20 °C
2
1
0
0
5
10
15
20
25
30
35
40
45
50
55
0
1
2
3
4
5
6
Vdd (V)
Vgs (V)
Figure 4. Gate Source Voltage Vs Case Temp. Figure 5. Safe Operating Area
100
10
1
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
Id = 7 A
Id = 9 A
Id = 10 A
Id = 11 A
Id = 5 A
Id = 4 A
Id = 2 A
Id = 1 A
Id = 0.25 A
Id = 0.1 A
-25
0
25
50
75
100
1
10
100
1000
Tc (oC)
Vds (V)
6/14
SD2942
3 Typical Performance
Figure 6. Power Gain Vs Pout and Case Temp. Figure 7. Efficiency Vs Pout and Case Temp.
20
19
18
17
16
15
14
13
12
70
60
50
40
30
20
10
0
+25°C
-20°C
-20°C
+80°C
+25°C
+80°C
Vdd = 50V
Idq = 2 x 250mA
Freq = 175 MHz
Vdd = 50V
Idq = 2 x 250mA
Freq = 175 MHz
0
50
100 150 200 250 300 350 400 450 500
Pout (W)
0
50
100 150 200 250 300 350 400 450 500
Pout (W)
Figure 8. Pout Vs Input Power and Case Temp Figure 9. Pout Vs Input Power & Drain Voltage
500
450
400
350
300
250
200
150
100
50
500
450
400
350
300
250
200
150
100
50
-20°C
50V
+25°C
+80°C
40V
Vdd = 50V
Idq = 2 x 250mA
Freq = 175 MHz
Freq = 175 MHz
Idq = 2 x 250mA
0
0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
0
1
2
3
4
5
6
7
8
9
10 11 12 13
Pin (W)
Pin (W)
7/14
3 Typical Performance
SD2942
Figure 10. Pout Vs Gate Voltage & Case Temp. Figure 11. Pout Vs Drain Voltage & Input Power
500
450
400
350
300
250
200
150
100
500
450
400
350
300
250
200
150
100
50
Pin = 10W
- 20°C
+25°C
Pin = 7W
Pin = 5W
+80°C
Freq = 175 MHz
Idq = 2 x 250mA
Pin = 7W
Freq = 175 MHz
Idq = 2 x 250mA
0
-4
-3
-2
-1
0
1
2
3
4
24
28
32
36
Vdd (V)
40
44
48
52
Vgs (V)
Figure 12. Max. Therm. Resist Vs Case Temp.
0.42
0.40
0.38
0.36
0.34
25 30 35 40 45 50 55 60 65 70 75 80 85
Tc (oC)
8/14
SD2942
4 Test Circuit
4
Test Circuit
Figure 13. 175 MHz Test Circuit Schematic
Note: 1 Dimension at component symbol are reference for component placement.
2 Gap between ground and transmission lines is + 0.002{0.05} - 0.000{0.00} Typ.
9/14
4 Test Circuit
SD2942
Table 6.
175 MHz Test Circuit Component Part List
Symbol
Description
R1,R2,R5,R6
470 Ω 1 W, Surface Mount Chip Resistor
R3,R4
360 Ω 0.5 W, Carbon Comp. Axial Lead Resistor or Equivalent
560 Ω 2 W, Resistor Two Turn Wire Air-Wound Axial Lead Resistor
20 KΩ 3.09 W, 10 Turn Wirewound Precision Potentiometer
680 pF ATC 130B Surface Mount Ceramic Chip Capacitor
10000 pF ATC 200B Surface Mount Ceramic Chip Capacitor
75 pF ATC 100B Surface Mount Ceramic Chip Capacitor
ST40 25 pF - 115 pF Miniature variable Trimmer
R7,R8
R9,R10
C1,C4
C2,C3,C7,C8,C17,C19,C20,C21
C5
C6
C9,C10
47 pF ATC 100B Surface Mount Ceramic Chip Capacitor
43 pF ATC 100B Surface Mount Ceramic Chip Capacitor
1200 pF ATC 700B Surface Mount Ceramic Chip Capacitor
470 pF ATC 700B Surface Mount Ceramic Chip Capacitor
0.1 µF / 500 V Surface Mount Ceramic Chip Capacitor
0.01 µF / 500 V Surface Mount Ceramic Chip Capacitor
10 µF / 63 Aluminum Electrolytic Axial Lead Capacitor
C11,C12, C13
C14,C15,C24,C25
C16,C18
C22,C23
C26,C27
C28
50 Ω RG316 O.D 0.076[1.93] L = 11.80[299.72] Flexible Coaxial Cable 4
B1
B2
T1
Turns thru Fair-rite Bead
50 Ω RG-142B O.D 0.165[4.19] L = 11.80[299.72] Flexible Coaxial Cable
R.F. Transformer 4:1, 25 Ω O.D RG316-25 O.D 0.080[2.03] L = 5.90[149.86]
Flexible Coaxial Cable 2 Turns thru Fair-rite Multi-Aperture Core
R.F. Transformer 1:4, 25 Ω Semi-rigid Coaxial Cable O.D. 0.141[3.58] L =
T2
L1
5.90[149.86]
Inductor λ 1/4 Wave 50 Ω O.D 0.165[4.19] L = 11.80 [299.72] Flexible Coaxial
Cable 2 Turns thru Fair-rite Bead
FB1,FB5
FB2,FB6
FB3
Shield Bead
Multi-aperture Core
Multilayer Ferrite Chip Bead (Surface Mount)
Surface Mount Emi Shield Bead
FB4
Woven Glass Reinforced PTFE Microwave Laminate 0.06”, 1 oz EDCu, Both
sides, εr = 2.55
PCB
10/14
SD2942
4 Test Circuit
Figure 14. 175 MHz Test Circuit Photomaster
8.50 inches
Figure 15. 175 MHz Test Circuit
11/14
5 Mechanical Data
SD2942
5
Mechanical Data
Table 7.
DIM.
M244 (.400 x .860 4/L BAL N/HERM W/FLG)
mm.
inch
TYP
MIN.
TYP
MAX.
MIN.
MAX.
A
B
C
D
E
F
G
H
I
5.59
5.84
0.220
0.230
5.08
0.200
3.02
9.65
3.28
9.91
0.119
0.380
0.780
0.430
0.129
0.390
0.820
0.440
19.81
10.92
20.82
11.18
27.94
1.100
33.91
0.10
34.16
0.15
1.335
0.004
0.060
0.102
0.190
0.395
0.850
1.345
0.006
0.070
0.112
0.230
0.407
0.870
J
1.52
1.78
K
L
2.59
2.84
4.83
5.84
M
N
10.03
21.59
10.34
22.10
Figure 16. M244 Package Dimensions
Controlling Dimension: Inches
12/14
SD2942
6 Revision History
6
Revision History
Date
18 Oct 2005
Revision
Description of Changes
1
First Issue.
13/14
6 Revision History
SD2942
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of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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14/14
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