FERD20U50 Field effect rectifier Description −

FERD20U50 Field effect rectifier Description −
FERD20U50
Field effect rectifier
Datasheet − production data
Description
$
$
This single rectifier is based on a proprietary
technology, enabling to achieve the best in class
VF/IR trade-off for a given silicon surface.
.
$
Packaged in PowerFLAT 5x6™, this device is
intended to be used in rectification and
freewheeling operations in switch-mode power
supplies.
$
.
.
Table 1. Device summary
$
Symbol
Value
IF(AV)
20 A
VRRM
50 V
Tj (max)
+150 °C (Up to 200 °C
forward mode only on
PowerFlat 5x6)
VF(typ)
0.33 V
$
3RZHU)/$7[
Features
• ST proprietary process
• Stable leakage current over reverse voltage
• Low forward voltage drop
• High frequency operation
TM: PowerFLAT is a trademark of STMicroelectronics
August 2015
This is information on a product in full production.
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www.st.com
Characteristics
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FERD20U50
Characteristics
Table 2. Absolute ratings (limiting values, at 25 °C, unless otherwise specified anode terminals
short-circuited)
Symbol
Parameter
Value
Unit
VRRM
Repetitive peak reverse voltage
50
V
IF(RMS)
Forward rms current
45
A
IF(AV)
Average forward current, δ = 0.5
Tc = 115 °C
20
A
IFSM
Surge non repetitive forward current
tp = 10 ms sinusoidal
390
A
Tstg
Storage temperature range
-65 to + 175
°C
(1)
Tj
Maximum operating junction temperature
PowerFlat 5x6
150
PowerFlat 5x6 (DC forward current
without reverse bias, t = 1 hour)
200
°C
1
dPtot <
condition to avoid thermal runaway for a diode on its own heatsink
Rth(j-a)
dTj
1.
Table 3. Thermal resistance
Symbol
Rth(j-c)
Parameter
Value (max)
Unit
2.6
°C/W
Junction to case
Table 4. Static electrical characteristics (anode terminals short-circuited)
Symbol
IR(1)
Parameter
Test conditions
Tj = 25 °C
Reverse leakage current
Tj = 125 °C
Tj = 25 °C
VF(2)
Tj = 125 °C
Forward voltage drop
Tj = 25 °C
Tj = 125 °C
Min.
-
VR = VRRM
IF = 10 A
-
30
-
0.37
-
0.33
-
0.45
-
0.44
Max.
Unit
800
µA
60
mA
V
IF = 20 A
1. Pulse test: tp = 5 ms, δ < 2%
2. Pulse test: tp = 380 µs, δ < 2%
To evaluate the conduction losses use the following equation:
P = 0.25 x IF(AV) + 0.011 IF2(RMS)
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Typ.
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FERD20U50
Characteristics
Figure 1. Average forward power dissipation
versus average forward current
PF(AV)(W)
14
d = 0.05 d = 0.1 d = 0.2
12
Figure 2. Average forward current versus
ambient temperature (δ = 0.5)
d=1
d = 0.5
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5WKMD 5WKMF
10
8
6
4
T
2
0
0
2
4
6
8
10
12
14
d=tp/T
16
18
20
tp
22
24
26
Figure 3. Relative variation of thermal
impedance junction to case versus pulse
duration
1.0
7
IF(AV)(A)
Z t h ( j- c) / R t h ( j- c )
į WS7
7DPEƒ&
WS
Figure 4. Reverse leakage current versus
reverse voltage applied (typical values)
1.E+02
IR(mA)
0.9
Tj = 125 °C
0.8
1.E+01
0.7
Tj = 100 °C
Tj = 75 °C
0.6
0.5
1.E+00
Tj = 50 °C
0.4
0.3
0.2
0.1
t p (s)
0.0
1.E-04
1.E-03
1.E-02
1.E-01
1.E+00
Figure 5. Junction capacitance versus reverse
voltage applied (typical values)
V R (V)
1.E-02
0
5
10
15
20
25
30
35
40
45
50
Figure 6. Forward voltage drop versus forward
current (typical values)
IF ( A )
C(pF)
10000
Tj = 25 °C
1.E-01
Single pulse
100.0
F = 1 MHz
Vosc = 30 mVRMS
Tj = 25 °C
10.0
Tj = 75 °C
1000
Tj = 125 °C
Tj = 25 °C
1.0
VR (V)
100
V F (V)
0.1
1
10
100
0.00
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0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
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Characteristics
FERD20U50
Figure 7. Thermal resistance junction to ambient versus copper surface under tab
(typical values)
R th( j - a)(°C/W)
150
Epoxy printed board Fr4, copper thickness = 35 µm
125
100
75
50
25
SCu (cm²)
0
0
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1
2
3
4
5
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FERD20U50
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Package information
Package information
•
Epoxy meets UL94, V0
•
Cooling method: by conduction (C)
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
2.1
PowerFLAT-8L package information
Figure 8. PowerFLAT-8L package outline
D2
E2
K
e
b
L
A
A1
D
A2
E
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Package information
FERD20U50
Table 5. PowerFLAT-8L package mechanical data
Dimensions
Ref.
Millimeters
Min.
Typ.
Inches
Max.
Min.
Max.
A
0.80
1.00
0.031
0.039
A1
0.02
0.05
0.001
0.002
A2
b
0.25
0.30
D
D2
0.010
0.50
0.012
5.20
4.11
0.020
0.205
4.31
0.162
0.170
e
1.27
0.050
E
6.15
0.242
E2
3.50
3.70
0.138
0.146
L
0.50
0.80
0.020
0.031
K
1.275
1.575
0.050
0.062
Figure 9. Footprint (dimensions in mm)
3.86
4.33
6.29
5.35
4.41
0.98
0.95
0.62
1.27
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Typ.
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FERD20U50
3
Ordering information
Ordering information
Table 6. Ordering information
4
Order code
Marking
Package
Weight
Base qty
Delivery mode
FERD20U50DJF-TR
FD20U50
PowerFLAT 5x6
95 mg
3000
Tape and reel
Revision history
Table 7. Document revision history
Date
Revision
Changes
25-Mar-2014
1
Initial release.
06-Jun-2014
2
Updated RPN
06-Aug-2015
3
Updated Table 2 and reformatted to current standard.
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FERD20U50
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