Datasheet STPS2545C Datasheet (ST)

STPS2545C

Power Schottky rectifier

Datasheet − production data

Features

■ Very small conduction losses

■ Negligible switching losses

■ Extremely fast switching

■ Low thermal resistance

■ Avalanche capability specified

■ ECOPACK

®

2 compliant component

(STPS2545CT)

Description

Dual center tab Schottky rectifier suited for switch
mode power supplies and high frequency DC to
DC converters.

This device is especially intended for use in low
volage, high frequency inverters, free-wheeling
and polarity protection applications.

A1

A2

TO-220AB

STPS2545CT

A2

K

A1

TO-220FPAB

STPS2545CFP

Table 1. Device summary

Symbol Value

I

2 x 12.5 A

F(AV)

45 V

V

RRM

T

j (max)

V

0.57 V

F(max)

K

A2

K

A1

K

A1

2

PAK

D

STPS2545CG

175 °C

A2

June 2012 Doc ID 8736 Rev 4 1/10

This is information on a product in full production.

www.st.com

10

Characteristics STPS2545C

1 Characteristics

Table 2. Absolute ratings (limiting values, per diode)

Symbol Parameter Value Unit

V

I

F(RMS)

I

F(AV)

I

I

I

P

T

Repetitive peak reverse voltage 45 V

RRM

Forward rms current 30 A

2

Average forward current
δ = 0.5

Surge non repetitive forward current t

FSM

Repetitive peak reverse current

RRM

Non repetitive peak reverse current

RSM

Repetitive peak avalanche power

ARM

Storage temperature range -65 to + 175 °C

stg

Maximum operating junction temperature

T

j

TO-220AB D

TO-220FPAB

PA K

(1)

=160 °C

T

c

T

=140 °C

c

= 10 ms sinusoidal 200 A

p

= 2 µs square F=1 kHz

t

p

= 100 µs square

t

p

= 1 µs Tj = 25 °C

t

p

Per diode 12.5

Per device 25

1 A

2A

4800 W

175 °C

A

dV/dt Critical rate of rise reverse voltage 10000 V/µs

<

Rth(j-a)

1

dPtot

1. condition to avoid thermal runaway for a diode on its own heatsink

dTj

Table 3. Thermal resistances

Symbol Parameter Value Unit

2

TO-220AB / D

PAK Per diode 1.6

° C/W

TO-220FPAB 4

Junction to case

R

th (j-c)

TO-220AB / D2PAK Total 1.1

° C/W

TO-220FPAB 3.5

2

PA K 0 .6

° C/W

R

th (c)

Coupling

TO-220AB / D

TO-220FPAB 3

When the diodes 1 and 2 are used simultaneously :

ΔTj(diode 1) = P(diode1) x R

2/10 Doc ID 8736 Rev 4

(Per diode) + P(diode 2) x R

th(j-c)

th(c)

STPS2545C Characteristics

Table 4. Static electrical characteristics (per diode)

Symbol Parameter Tests Conditions Min. Typ. Max. Unit

(1)

I

Reverse leakage current

R

(1)

VF

Forward voltage drop

1. Pulse test : tp = 380 µs, δ < 2%

Tj = 25 °C

= 125 °C 9 25 mA

VR = V

T

j

= 125 °C IF = 12.5 A 0.50 0.57

T

j

= 25 °C IF = 25 A 0.84

j

= 125 °C IF = 25 A 0.65 0.72

T

j

RRM

125 µA

To evaluate the conduction losses use the following equation :
P = 0.42 x I

Figure 1. Conduction losses versus average

current)

P (W)F(AV)

10

9

8

7

6

5

4

3

2

1

0

0.0 2.5 5.0 7.5 10.0 12.5 15.0

δ = 0.05

δ = 0.1

Figure 3. Normalized avalanche power

derating versus pulse duration

+ 0.012 x I

F(AV)

δ = 0.2

I (A)F(AV)

δ = 0.5

F2(RMS)

T

=tp/T

δ

δ = 1

Figure 2. Average forward current versus

ambient temperature (δ = 0.5)

I (A)F(AV)

14

12

10

8

6

4

2

tp

δ

0

0 25 50 75 100 125 150 175

=tp/T

Rth

=Rth

(j-a)

(j-c)

Rth

=50°C/W

(j-a)

T

tp

T (°C)amb

Figure 4. Normalized avalanche power

derating versus junction

TO-220AB/D²PAK

temperature

P(t)

P(t)

ARM p

P (1µs)

ARM

1

P (25°C)

ARM

1.2

1

ARM p

V T

0.1

0.01

0.001

0.10.01 1

t (µs)

p

10 100 1000

0.8

0.6

0.4

0.2

T (°C)

0

j

0 25 50 75 100 125 150

Doc ID 8736 Rev 4 3/10

Characteristics STPS2545C

Figure 5. Non repetitive surge peak forward

current versus overload duration
(maximum values)

I (A)M

200

180

160

140

120

100

80

60

40

IM

20

0

1.E-03 1.E-02 1.E-01 1.E+00

δ=0.5

t

t(s)

TO-220AB, D PAK

2

TC=25°C

TC=75°C

TC=125°C

Figure 7. Relative variation of thermal

impedance junction to case versus
pulse duration (TO-220AB, D

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

1.0

0.9

0.8

0.7

δ = 0.5

0.6

0.5

0.4

δ = 0.2

δ = 0.1

0.3

0.2

Single pulse

0.1

0.0

1.E-03 1.E-02 1.E-01 1.E+00

t (s)

P

δ

=tp/T

2

T

PAK)

tp

Figure 9. Reverse leakage current versus

reverse voltage applied
(typical values)

I (mA)R

1.E+02

1.E+01

Tj=150°C

Tj=125°C

Figure 6. Relative variation of thermal

impedance junction to case versus
pulse duration (TO-220FPAB)

I (A)M

120

100

80

60

40

IM

20

0

1.E-03 1.E-02 1.E-01 1.E+00

δ=0.5

t

t(s)

TC=25°C

TC=125°C

Figure 8. Relative variation of thermal

impedance junction to case versus
pulse duration (TO-220FPAB)

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

1.0

0.9

0.8

0.7

0.6

= 0.5

δ

0.5

0.4

= 0.2

δ

0.3

= 0.1

δ

0.2

0.1

Single pulse

0.0

1.E-03 1.E-02 1.E-01 1.E+00 1.E+01

t (s)

P

δ

T

=tp/T

Figure 10. Junction capacitance versus

reverse voltage applied
(typical values)

C(nF)

10.0

F=1MHz

V

osc

T

=30mV

=25°C

j

TC=75°C

tp

1.E+00

1.E-01

1.E-02

1.E-03
0 5 10 15 20 25 30 35 40 45

Tj=100°C

Tj=75°C

Tj=50°C

Tj=25°C

V (V)R

1.0

0.1
1 10 100

4/10 Doc ID 8736 Rev 4

V (V)

R

STPS2545C Characteristics

Figure 11. Forward voltage drop versus

forward current

I (A)

FM

100

Tj=125°C

Tj=125°C

(Maximum values)

(Maximum values)

Tj=125°C

Tj=125°C

(Typical values)

(Typical values)

10

1

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4

V (V)

FM

Tj=25°C

(Maximum values)

Figure 12. Thermal resistance junction to

ambient versus copper surface
under tab

Rth(j-a)(°C/W)

80

70

60

50

40

30

20

10

0

0 5 10 15 20 25 30 35 40

epoxy printed board FR4, Cu = 35 µm

S(cm²)

Doc ID 8736 Rev 4 5/10

Package information STPS2545C

2 Package information

● Epoxy meets UL94, V0

● Lead-free packages

In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com
ECOPACK

Table 5. TO-220AB dimensions

®

packages, depending on their level of environmental compliance. ECOPACK®

®

is an ST trademark.

.

Dimensions

Ref.

Millimeters Inches

Min. Max. Min. Max.

A 4.40 4.60 0.173 0.181

H2

Dia

A

C

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

L2

F2

F1

L5

L6

L9

L4

F

G1

L7

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

G 4.95 5.15 0.194 0.202

D

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

G

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

6/10 Doc ID 8736 Rev 4

M 2.6 typ. 0.102 typ.

Diam. 3.75 3.85 0.147 0.151

STPS2545C Package information

Table 6. TO-220FPAB dimensions

Dimensions

Ref.

Millimeters Inches

Min. Max. Min. Max.

A 4.4 4.6 0.173 0.181

A

H

B

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

Dia

L6

L2

L3

L5

F1

L4

F2

F

G1

G

D

L7

E

F 0.75 1 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 2.4 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

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

Doc ID 8736 Rev 4 7/10

Package information STPS2545C

m

D

Table 7. D

L2

L

L3

2

PAK dimensions

E

A1

B2

B

G

* FLAT ZONE NO LESS THAN 2m

Dimensions

Ref.

Millimeters Inches

Min. Max. Min. Max.

A 4.40 4.60 0.173 0.181

A

C2

A1 2.49 2.69 0.098 0.106

A2 0.03 0.23 0.001 0.009

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

C

R

D 8.95 9.35 0.352 0.368

E 10.00 10.40 0.393 0.409

A2

G 4.88 5.28 0.192 0.208

L 15.00 15.85 0.590 0.624

M

*

V2

L2 1.27 1.40 0.050 0.055

L3 1.40 1.75 0.055 0.069

M 2.40 3.20 0.094 0.126

Figure 13. Footprint (dimensions in mm)

16.90

10.30

8.90

R 0.40 typ. 0.016 typ.

V2 0° 8° 0° 8°

5.08

1.30

3.70

8/10 Doc ID 8736 Rev 4

STPS2545C Ordering information

3 Ordering information

Table 8. Ordering information

Order code Marking Package Weight Base qty Delivery mode

STPS2545CT STPS2545CT TO-220AB 2.20 g 50 Tube

STPS2545CFP STPS2545CFP TO-220FPAB 2.0 g 50 Tube

2

STPS2545CG STPS2545CG D

STPS2545CG-TR STPS2545CG D

PAK 1.48 g 50 Tube

2

PAK 1.48 g 1000 Tape and reel

4 Revision history

Table 9. Document revision history

Date Revision Changes

July-2003 2A Last release.

21-Jun-2010 3 Updated ECOPACK statement.

28-Jun-2012 4 Corrected typographical error in Ta b l e 3 .

Doc ID 8736 Rev 4 9/10

STPS2545C

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10/10 Doc ID 8736 Rev 4