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STPS2545CG Datasheet(PDF) 2 Page - STMicroelectronics

Part # STPS2545CG
Description  POWER SCHOTTKY RECTIFIER
Download  6 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPS2545CG Datasheet(HTML) 2 Page - STMicroelectronics

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STPS2545CT/CG/CFP
2/6
Symbol
Parameter
Value
Unit
Rth (j-c)
Junction to ambient
TO-220AB / D
2PAK
Per diode
1.6
°C/W
TO-220FPAB
4
TO-220AB / D
2PAK
Total
1.1
°C/W
TO-220FPAB
3.5
Rth (c)
TO-220AB / D
2PAK
Coupling
0.6
°C/W
TO-220FPAB
3
THERMAL RESISTANCES
Symbol
Parameter
Tests Conditions
Min.
Typ.
Max.
Unit
IR *
Reverse leakage Current
Tj = 25°C
VR =VRRM
125
µA
Tj = 125°C
9
25
mA
VF*
Forward Voltage drop
Tj = 125°C
IF = 12.5 A
0.50
0.57
V
Tj = 25°C
IF = 25 A
0.84
Tj = 125°C
IF = 25 A
0.65
0.72
STATIC ELECTRICAL CHARACTERISTICS (per diode)
Pulse test :
* tp = 380 µs,
δ <2%
To evaluate the conduction losses use the following equation :
P = 0.42 x IF(AV) + 0.012 x IF
2
(RMS)
0
1
2
3
4
5
6
7
8
9
10
0.0
2.5
5.0
7.5
10.0
12.5
15.0
I
(A)
F(AV)
δ = 0.05 δ = 0.1
δ = 0.2
δ = 0.5
δ = 1
P
(W)
F(AV)
T
δ=tp/T
tp
Fig. 1: Conduction losses versus average current.
0
2
4
6
8
10
12
14
0
25
50
75
100
125
150
175
T
(°C)
amb
Rth
(j-a)=Rth(j-c)
Rth
(j-a)=50°C/W
TO-220AB/D²PAK
I
(A)
F(AV)
T
δ=tp/T
tp
Fig. 2: Average forward current versus ambient
temperature (
δ=0.5).
When the diodes 1 and 2 are used simultaneously :
∆ Tj(diode 1) = P(diode1) x Rth(j-c)(Per diode) + P(diode 2) x Rth(c)
0
0.2
0.4
0.6
0.8
1
1.2
0
25
50
75
100
125
150
T (°C)
j
P(t )
P
(25°C)
ARM p
ARM
Fig. 4: Normalized avalanche power derating
versus junction temperature.
0.001
0.01
0.1
0.01
1
0.1
10
100
1000
1
t (µs)
p
P(t )
P
(1µs)
ARM p
ARM
Fig. 3: Normalized avalanche power derating
versus pulse duration.


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