Datasheet STPS20L45CW, STPS20L45CT, STPS20L45CG, STPS20L45CFP, STPS20L45CF Datasheet (SGS Thomson Microelectronics)

®

STPS20L45CF/CW/CT/CFP/CG

LOW DROP POWER SCHOTTKY RECTIFIER

MAJOR PRODUCTS CHARACTERISTICS

I

F(AV)

V

RRM

2x10A

45 V

Tj (max) 150°C

V

(max) 0.5 V

F

FEATURES AND BENEFITS

LOW FORWARD VOLTAGE DROP MEANING

■

VERY SMALL CONDUCTION LOSSES
LOW SWITCHING LOSSES ALLOWING HIGH

■

FREQUENCY OPERATION
INSULATED PACKAGE: ISOWATT220AB,

■

TO-220FPAB
Insulating voltage = 2000V DC
Capacitance = 12pF

■ AVALANCHE CAPABILITY SPECIFIED

DESCRIPTION

Dual center tap Schottky rectifiers designed for
highfrequencyswitchedmodepowersuppliesand
DC to DC converters.

These devices are intendedfor usein low voltage,
high frequency inverters, free-wheeling and
polarity protection applications.

K

A2

A1

D2PAK

STPS20L45CG

K

A1

TO-220FPAB

STPS20L45CFP

K

A1

ISOWATT220AB

STPS20L45CF

A1

K

A2

A2

K

A2

A1

TO-220AB

STPS20L45CT

A2

A1

A2

K

TO-247

STPS20L45CW

ABSOLUTE RATINGS (limiting values, per diode)

Symbol Parameter Value Unit

V

RRM

I

F(RMS)

I

F(AV)

Repetitive peak reverse voltage
RMS forward current
Average forward

current

I

FSM

I

RRM

I

RSM

P

ARM

T

Tj

dV/dt

dPtot

*:

Surge non repetitive forward current tp = 10 ms Sinusoidal
Peak repetitive 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

stg

Storage temperature range
Maximum operating junction temperature *
Critical rate of rise of reverse voltage

<

dTj Rth j a

July 2003 - Ed: 3C

TO-220AB / D2PAK
TO-247

ISOWATT220AB
TO-220FPAB

Tc = 135°C
δ = 0.5

Tc = 115°C
δ = 0.5

Per diode
Per device

Per diode
Per device

thermal runaway condition for a diode on its own heatsink

−1()

45 V
30 A
10

20
10

20

180 A

1A
2A

4000 W

- 65 to + 150 °C
150 °C

10000 V/µs

A

A

1/9

STPS20L45CF/CW/CT/CFP/CG

THERMAL RESISTANCES

Symbol Parameter Value Unit

R

th(j-c)

Junction to case ISOWATT220AB

TO-220FPAB

R

R

th(j-c)

th(j-c)

Junction to case TO-247

Junction to case TO-220AB

D2PAK

When the diodes 1 and 2 are used simultaneously :

∆ Tj(diode 1) = P(diode1) x R

(Per diode) + P(diode2) x R

th(j-c)

STATIC ELECTRICAL CHARACTERISTICS (per diode)

Symbol Parameter Tests Conditions Min. Typ. Max. Unit

*

I

R

V

F

Reverse leakage
current

*

Forward voltage drop Tj = 25°CI

Tj = 25°C V
Tj = 125°C

Tj = 125°C I
Tj=25°CI
Tj = 125°C I

Pulse test : * tp = 380 µs, δ <2%

R=VRRM

=10A

F

=10A

F

=20A

F

=20A

F

Per diode

Total

Coupling

Per diode

Total

Coupling

Per diode

Total

Coupling

th(c)

4.5

°C/W

3.5

2.5

2.2

°C/W

1.20

0.3

2.2

°C/W

1.3

0.3

0.2 mA

65 130 mA

0.55 V

0.44 0.5

0.73

0.62 0.72

To evaluate the conduction losses use the following equation :
P=0.28xI

Fig. 1: Average forward power dissipation versus
average forward current (per diode).

PF(av)(W)

8
7
6
5
4
3
2
1
0

02468101214

δ = 0.05

F(AV)

+ 0.022 I

δ = 0.1

δ = 0.2

IF(av) (A)

F2(RMS)

δ = 0.5

δ

δ = 1

=tp/T

Fig. 2: Average forward current versus ambient
temperature(δ = 0.5, per diode).

IF(av)(A)

12
11
10

9
8
7
6
5

T

tp

4
3
2
1

δ

0

0 25 50 75 100 125 150

=tp/T

Rth(j-a)=Rth(j-c)

ISOWATT220AB

Rth(j-a)=15°C/W

T

tp

Tamb(°C)

TO-220AB/TO-247

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STPS20L45CF/CW/CT/CFP/CG

Fig. 3: Normalized avalanche power derating

versus pulse duration.

P(t)

ARM p

P (1µs)

ARM

1

0.1

0.01

t (µs)

0.001

0.10.01 1

p

10 100 1000

Fig. 5-1: Non repetitive surge peak forward
current versus overload duration (maximum
values, per diode, TO-220AB, TO-247,

2

PAK).

D

IM(A)

140
120
100

80
60
40

IM

20

0
1E-3 1E-2 1E-1 1E+0

δ=0.5

t

t(s)

Tc=25°C

Tc=75°C

Tc=125°C

Fig. 4: Normalized avalanche power derating
versus junction temperature.

P(t)

ARM p

P (25°C)

ARM

1.2
1

0.8

0.6

0.4

0.2
0

0 25 50 75 100 125 150

T (°C)

j

Fig. 5-2: Non repetitive surge peak forward

current versus overload duration (maximum
values, per diode, ISOWATT220AB,
TO-220FPAB).

IM(A)

100

90
80
70
60
50
40
30

IM

20
10

0

1E-3 1E-2 1E-1 1E+0

δ=0.5

t

t(s)

Tc=25°C

Tc=50°C

Tc=100°C

Fig. 6-1: Relative variation of thermal impedance
junction to case versus pulse duration (TO-220AB,
TO-247, D

Zth(j-c)/Rth(j-c)

1.0

0.8

0.6

0.4

0.2

0.0
1E-3 1E-2 1E-1 1E+0

δ = 0.5

δ = 0.2
δ = 0.1

Single pulse

2

PAK).

tp(s)

δ

=tp/T

T

tp

Fig. 6-2: Relative variation of thermal impedance
junction to case versus pulse duration
(ISOWATT220AB, TO-220FPAB).

Zth(j-c)/Rth(j-c)

1.0

0.8

δ = 0.5

0.6

0.4

δ = 0.2

δ = 0.1

0.2

Single pulse

0.0
1E-3 1E-2 1E-1 1E+0 1E+1

tp(s)

δ

=tp/T

T

tp

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STPS20L45CF/CW/CT/CFP/CG

Fig. 7: Reverse leakage current versus reverse

voltage applied (typical values, per diode).

IR(mA)

2E+2
1E+2

1E+1

1E+0

Tj=150°C

Tj=125°C

Tj=75°C

1E-1

1E-2

Tj=25°C

VR(V)

1E-3

0 5 10 15 20 25 30 35 40 45

Fig. 9: Forward voltage drop versus forward
current (maximum values) (per diode).

IFM(A)

100.0

10.0

1.0

0.1

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Tj=125°C

Typical values

Tj=150°C

Tj=75°C

Tj=25°C

VFM(V)

Fig. 8: Junction capacitance versus reverse

voltage applied (typical values, per diode).

C(pF)

2000

F=1MHz

Tj=25°C

1000

VR(V)

100

12 51020 50

Fig. 10: Thermal resistance junction to ambient
versus copper surface under tab (Epoxy printed cir­cuit board FR4, copper thickness: 35µm) (D

Rth(j-a) (°C/W)

80
70
60
50
40
30
20
10

0

0 4 8 12 16 20 24 28 32 36 40

S(Cu) (cm²)

2

PAK).

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PACKAGE MECHANICAL DATA

ISOWATT220AB

STPS20L40CF/CW/CT

DIMENSIONS

■

Cooling method : C

■ Recommended torque value : 0.55 m.N

■ Maximum torque value : 0.70 m.N

REF.

Millimeters Inches

Min. Max. Min. Max.

A 4.40 4.60 0.173 0.181
B 2.50 2.70 0.098 0.106

D 2.50 2.75 0.098 0.108

E 0.40 0.70 0.016 0.028

F 0.75 1.00 0.030 0.039
F1 1.15 1.70 0.045 0.067
F2 1.15 1.70 0.045 0.067

G 4.95 5.20 0.195 0.205

G1 2.40 2.70 0.094 0.106

H 10.00 10.40 0.394 0.409
L2 16.00 typ. 0.630 typ.
L3 28.60 30.60 1.125 1.205
L4 9.80 10.60 0.386 0.417
L6 15.90 16.40 0.626 0.646
L7 9.00 9.30 0.354 0.366

Diam 3.00 3.20 0.118 0.126

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STPS20L45CF/CW/CT/CFP/CG

PACKAGE MECHANICAL DATA

TO-220FPAB

H

Dia

L6

L2

L3

L5

D

L4

G1

G

F1

F2

F

REF. DIMENSIONS

Millimeters Inches

A

B

A 4.4 4.6 0.173 0.181

Min. Max. Min. Max.

B 2.5 2.7 0.098 0.106

D 2.5 2.75 0.098 0.108

E 0.45 0.70 0.018 0.027
F 0.75 1 0.030 0.039

L7

F1 1.15 1.70 0.045 0.067
F2 1.15 1.70 0.045 0.067

G 4.95 5.20 0.195 0.205

G1 2.4 2.7 0.094 0.106

H 10 10.4 0.393 0.409
L2 16 Typ. 0.63 Typ.
L3 28.6 30.6 1.126 1.205

E

L4 9.8 10.6 0.386 0.417
L5 2.9 3.6 0.114 0.142
L6 15.9 16.4 0.626 0.646
L7 9.00 9.30 0.354 0.366

Dia. 3.00 3.20 0.118 0.126

■ Cooling method : C

■

Recommended torque value : 0.55 m.N

■

Maximum torque value : 0.70 m.N

6/9

PACKAGE MECHANICAL DATA

TO-220AB

STPS20L45CF/CW/CT/CFP/CG

DIMENSIONS

H2

Dia

L5

L6

L2

F2

F1

F

G1

G

■ Cooling method : C

■

Recommended torque value : 0.55 m.N

■

Maximum torque value : 0.70 m.N

L9

L4

REF.

A

C

L7

A 4.40 4.60 0.173 0.181
C 1.23 1.32 0.048 0.051
D 2.40 2.72 0.094 0.107
E 0.49 0.70 0.019 0.027

Millimeters Inches

Min. Max. Min. Max.

F 0.61 0.88 0.024 0.034
F1 1.14 1.70 0.044 0.066
F2 1.14 1.70 0.044 0.066

D

G 4.95 5.15 0.194 0.202
G1 2.40 2.70 0.094 0.106
H2 10 10.40 0.393 0.409

L2 16.4 typ. 0.645 typ.

M

E

L4 13 14 0.511 0.551
L5 2.65 2.95 0.104 0.116
L6 15.25 15.75 0.600 0.620
L7 6.20 6.60 0.244 0.259
L9 3.50 3.93 0.137 0.154

M 2.6 typ. 0.102 typ.

Diam. 3.75 3.85 0.147 0.151

7/9

STPS20L45CF/CW/CT/CFP/CG

PACKAGE MECHANICAL DATA

2

PAK

D

L2

E

L

L3

B2
B

G

* FLAT ZONE NO LESS THAN 2mm

C2

A1

C

M

A2

DIMENSIONS

REF.

A

Millimeters Inches

Min. Max. Min. Max.

A 4.40 4.60 0.173 0.181
A1 2.49 2.69 0.098 0.106
A2 0.03 0.23 0.001 0.009

D

B 0.70 0.93 0.027 0.037
B2 1.14 1.70 0.045 0.067

C 0.45 0.60 0.017 0.024
C2 1.23 1.36 0.048 0.054

R

D 8.95 9.35 0.352 0.368

E 10.00 10.40 0.393 0.409

G 4.88 5.28 0.192 0.208

L 15.00 15.85 0.590 0.624
L2 1.27 1.40 0.050 0.055
L3 1.40 1.75 0.055 0.069

*

V2

M 2.40 3.20 0.094 0.126
R 0.40 typ. 0.016 typ.

V2 0° 8° 0° 8°

FOOTPRINT

10.30

16.90

5.08

1.30

3.70

8.90

8/9

PACKAGE MECHANICAL DATA

TO-247

V

V

H

L5

L

F2

F4

L1

F3

L3

F1

V2

F(x3)

G

= =

Dia.

L4L2

D

ME

A

STPS20L45CF/CW/CT/CFP/CG

DIMENSIONS

REF.

A 4.85 5.15 0.191 0.203
D 2.20 2.60 0.086 0.102
E 0.40 0.80 0.015 0.031

F 1.00 1.40 0.039 0.055
F1 3.00 0.118
F2 2.00 0.078
F3 2.00 2.40 0.078 0.094
F4 3.00 3.40 0.118 0.133

G 10.90 0.429

H 15.45 15.75 0.608 0.620

L 19.85 20.15 0.781 0.793
L1 3.70 4.30 0.145 0.169
L2 18.50 0.728
L3 14.20 14.80 0.559 0.582
L4 34.60 1.362
L5 5.50 0.216

M 2.00 3.00 0.078 0.118

V5° 5°
V2 60° 60°

Dia. 3.55 3.65 0.139 0.143

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

■ Cooling method : C

■

Recommended torque value : 0.8m.N

■

Maximum torque value : 1.0m.N

Ordering type Marking Package Weight Baseqty Delivery mode

STPS20L45CF STPS20L45CF ISOWATT220AB 2.1g 50 Tube

STPS20L45CFP STPS20L45CFP TO-220FPAB 2g 50 Tube

STPS20L45CT STPS20L45CT TO-220AB 2g 50 Tube

STPS20L45CW STPS20L45CW TO-247 4.4g 30 Tube

STPS20L45CG STPS20L45CG D

STPS20L45CG-TR STPS20L45CG D

■

Epoxy meets UL94,V0

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2

PAK 1.48g 50 Tube

2

PAK 1.48g 1000 Tape & Reel

http://www.st.com

9/9