Power Schottky rectifier

STPS2045CH
Power Schottky rectifier
Datasheet − production data
Description
This device is a dual diode Schottky rectifier,
suited to high frequency switch mode power
supply.
$
.
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Packaged in IPAK, this device is intended to be
used in notebook, game station and desktop
adapters, providing in these applications a good
efficiency at both low and high load.
Table 1. Device summary
$
.
$
Symbol
Value
IF(AV)
2 x 10 A
VRRM
45 V
Tj
175 °C
VF(typ)
0.57 V
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Figure 1.
Features
• Very small conduction losses
9
• Avalanche specification
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Electrical characteristics(a)
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• Low forward voltage drop
• High frequency operation
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a. VARM and IARM must respect the reverse safe
operating area defined in Figure 9. VAR and IAR are
pulse measurements (tp < 10 µs). VR, IR, VRRM and
VF, are static characteristics
October 2014
This is information on a product in full production.
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8
Characteristics
1
STPS2045CH
Characteristics
Table 2. Absolute ratings (limiting values, at 25 °C unless otherwise stated)
Symbol
Parameter
Value
Unit
VRRM
Repetitive peak reverse voltage
45
V
IF(RMS)
Forward rms current
20
A
IF(AV)
Average forward current, square wave, δ = 0.5
IFSM
Tc = 155 °C
Per diode
10
Tc = 150 °C
Per package
20
A
Surge non repetitive forward current
tp = 10 ms sine-wave
150
A
PARM
(1)
Repetitive peak avalanche power
tp = 10 µs, Tj = 125 °C
280
W
VARM
(2)
Maximum repetitive peak avalanche voltage
tp < 10 µs, Tj < 125 °C, IAR < 4.7 A
60
V
Maximum single-pulse peak avalanche voltage
tp < 10 µs, Tj < 125 °C, IAR < 4.7 A
60
V
-65 to +
150
°C
175
°C
VASM(2)
Tstg
Storage temperature range
Maximum operating junction temperature(3)
Tj
1. For pulse time duration derating, please refer to Figure 4. More details regarding the avalanche energy measurements and
diode validation in the avalanche are provided in the application notes AN1768 and AN2025.
2. See Figure 9
1
dPtot <
Rth(j-a)
dTj
3.
condition to avoid thermal runaway for a diode on its own heatsink
Table 3. Thermal resistance
Symbol
Parameter
Rth(j-c)
Junction to case
Rth(c)
Coupling
Value
Per diode
2.5
Total
1.6
Unit
°C/W
0.7
When the diodes 1 and 2 are used simultaneously:
ΔTj(diode 1) = P(diode1) x Rth(j-c)(Per diode) + P(diode 2) x Rth(c)
Table 4. Static electrical characteristics
Symbol
IR (1)
Parameter
Reverse leakage current
Test conditions
Tj = 25 °C
Tj = 125 °C
Tj = 125 °C
VF(2)
Forward voltage drop
Tj = 25 °C
Tj = 125 °C
VR = VRRM
IF = 10 A
Typ.
Max.
Unit
100
μA
7
15
mA
0.5
0.57
0.84
IF = 20 A
1. Pulse test: tp = 5 ms, δ < 2%
2. Pulse test: tp = 380 µs, δ < 2%
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Min.
DocID023045 Rev 2
0.65
0.72
V
STPS2045CH
Characteristics
To evaluate the conduction losses use the following equation:
P = 0.42 x IF(AV) + 0.015 IF2(RMS)
Figure 2. Average forward power dissipation
versus average forward current (per diode)
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Figure 3. Average forward current versus
ambient temperature (δ = 0.5, per diode)
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Figure 4. Normalized avalanche power derating
versus pulse duration at Tj = 125 °C
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Figure 5. Relative variation of thermal
impedance junction to case versus pulse
duration
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Figure 6. Reverse leakage current versus
reverse voltage applied
(typical values, per diode)
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Figure 7. Junction capacitance versus reverse
voltage applied (typical values, per diode)
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Characteristics
STPS2045CH
Figure 8. Forward voltage drop versus forward
current (per diode)
Figure 9. Reverse safe operating area
(tp < 10 µs and Tj < 125 °C)
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DocID023045 Rev 2
STPS2045CH
2
Package Information
Package Information
•
Epoxy meets UL94, V0
•
Lead-free package
•
ECOPACK®2 compliant component on demand
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.
Figure 10. IPAK dimension definitions
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E
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H
Note:
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This package drawing may slightly differ from the physical package. However, all the
specified dimensions are guaranteed.
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Package Information
STPS2045CH
Table 5. IPAK dimension values
Dimensions
Ref.
Millimeters
Min.
Typ.
Max.
Min.
Typ.
Max.
A
2.20
2.40
0.086
0.094
A1
0.90
1.10
0.035
0.043
b
0.64
0.90
0.025
0.035
b2
0.95
0.037
b4
5.20
5.43
0.204
0.213
c
0.45
0.60
0.017
0.023
c2
0.46
0.60
0.018
0.023
D
6
6.20
0.236
0.244
E
6.40
6.65
0.252
0.262
e
e1
2.28
4.40
H
6/8
Inches
0.090
4.60
0.173
16.10
0.181
0.634
L
9
9.60
0.354
0.377
L1
0.8
1.20
0.031
0.047
L2
0.80
V1
10°
1.25
DocID023045 Rev 2
0.031
10°
0.049
STPS2045CH
3
Ordering information
Ordering information
Table 6. Ordering information
4
Order code
Marking
Package
Weight
Base qty
Delivery mode
STPS2045CH
S2045CH
IPAK
0.35 g
75
Tube
Revision history
Table 7. Document revision history
Date
Revision
Changes
21-Jun-2012
1
First issue.
09-Oct-2014
2
Updated Table 2 and IPAK package informations.
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STPS2045CH
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