(PDF) STPS2545CT Datasheet PDF | STMicroelectronics





STPS2545CT Datasheet PDF

Part Number STPS2545CT
Description POWER SCHOTTKY RECTIFIER
Manufacture STMicroelectronics
Total Page 6 Pages
PDF Download Download STPS2545CT Datasheet PDF

Features: Datasheet pdf ® STPS2545CT/CG/CFP POWER SCHOTTKY REC TIFIER MAIN PRODUCT CHARACTERISTICS IF (AV) VRRM Tj (max) VF (max) 2 x 12.5 A 45 V 175 °C 0.57 V A1 K A2 FEATURES AND BENEFITS VERY SMALL CONDUCTION LOSS ES NEGLIGIBLE SWITCHING LOSSES EXTREMEL Y FAST SWITCHING LOW THERMAL RESISTANCE AVALANCHE CAPABILITY SPECIFIED s s s s s K A1 A2 K TO-220AB STPS2545CT A 2 A1 D2PAK STPS2545CG DESCRIPTION Dua l center tap Schottky rectifier suited for Switch Mode Power Supplies and high frequency DC to DC converters. This de vice is especially intended for use in low voltage, high frequency inverters, free wheeling and polarity protection a pplications. ABSOLUTE RATINGS (limiting values, per diode) Symbol VRRM IF(RMS) IF(AV) RMS forward current Average for ward current δ = 0.5 TO-220AB D2PAK TO -220FPAB IFSM IRRM IRSM PARM Tstg Tj dV /dt * : Surge non repetitive forward cu rrent Repetitive peak reverse current N on repetitive peak reverse current Repe titive peak avalanche power Storage temperature range Maximum oper.

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STPS2545CT datasheet
® STPS2545CT/CG/CFP
POWER SCHOTTKY RECTIFIER
MAIN PRODUCT CHARACTERISTICS
IF(AV)
VRRM
Tj (max)
2 x 12.5 A
45 V
175 °C
VF (max)
0.57 V
A1
K
A2
FEATURES AND BENEFITS
s VERY SMALL CONDUCTION LOSSES
s NEGLIGIBLE SWITCHING LOSSES
s EXTREMELY FAST SWITCHING
s LOW THERMAL RESISTANCE
s AVALANCHE CAPABILITY SPECIFIED
DESCRIPTION
Dual center tap Schottky rectifier suited for
Switch Mode Power Supplies and high fre-
quency DC to DC converters.
This device is especially intended for use in low
voltage, high frequency inverters, free wheeling
and polarity protection applications.
A2
A1K
TO-220AB
STPS2545CT
K
A2
A1
D2PAK
STPS2545CG
A2
K
A1
TO-220FPAB
STPS2545CFP
ABSOLUTE RATINGS (limiting values, per diode)
Symbol
Parameter
Value Unit
VRRM
IF(RMS)
IF(AV)
Repetitive peak reverse voltage
RMS forward current
Average forward
current δ = 0.5
TO-220AB
D2PAK
TO-220FPAB
Tc = 160°C Per diode
Tc = 140°C Per device
45
30
12.5
25
V
A
A
IFSM
IRRM
IRSM
PARM
Tstg
Tj
dV/dt
Surge non repetitive forward current tp = 10 ms sinusoidal
Repetitive peak reverse current
tp = 2 µs square F = 1kHz
Non repetitive peak reverse current
tp = 100 µs square
Repetitive peak avalanche power
tp = 1µs Tj = 25°C
Storage temperature range
Maximum operating junction temperature *
Critical rate of rise of reverse voltage
200 A
1A
2A
4800
W
- 65 to + 175 °C
175 °C
10000 V/µs
* : dPtot <
1 thermal runaway condition for a diode on its own heatsink
dTj Rth( j a)
July 2003 - Ed: 2A
1/6
Free Datasheet http://www.datasheet4u.com/

STPS2545CT datasheet
STPS2545CT/CG/CFP
THERMAL RESISTANCES
Symbol
Rth (j-c) Junction to ambient
Rth (c)
Parameter
TO-220AB / D2PAK
TO-220FPAB
TO-220AB / D2PAK
TO-220FPAB
TO-220AB / D2PAK
TO-220FPAB
Per diode
Total
Coupling
Value
1.6
4
1.1
3.5
0.6
3
Unit
°C/W
°C/W
°C/W
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)
STATIC ELECTRICAL CHARACTERISTICS (per diode)
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
Tj = 25°C
IF = 12.5 A
IF = 25 A
0.50 0.57
0.84
V
Tj = 125°C IF = 25 A
0.65 0.72
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 IF2(RMS)
Fig. 1: Conduction losses versus average current.
Fig. 2: Average forward current versus ambient
temperature (δ=0.5).
PF(AV)(W)
10
9
8
7
6
5
4
3
2
1
0
0.0
2.5
δ = 0.05 δ = 0.1 δ = 0.2
δ = 0.5
δ=1
T
IF(AV)(A)
δ=tp/T
tp
5.0
7.5
10.0
12.5
15.0
IF(AV)(A)
14
12
Rth(j-a)=Rth(j-c)
10
8
6
Rth(j-a)=50°C/W
4
T
2
0 δ=tp/T
tp
0 25 50
Tamb(°C)
75 100
TO-220AB/D²PAK
125 150 175
Fig. 3: Normalized avalanche power derating
versus pulse duration.
Fig. 4: Normalized avalanche power derating
versus junction temperature.
PARM(tp)
PARM(1µs)
1
0.1
0.01
0.001
0.01
0.1
tp(µs)
1 10
PARM(tp)
PARM(25°C)
1.2
1
0.8
0.6
0.4
0.2
Tj(°C)
0
100 1000
0 25 50 75 100 125 150
2/6
Free Datasheet http://www.datasheet4u.com/




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