Datasheet STPS40L45C-Y Datasheet (ST)

Features

■ Low forward voltage drop meaning very small

conduction losses

■ Low switching losses allowing high frequency

operation

■ Avalanche capability specified

■ AEC-Q101 qualified

Description

Dual center tap Schottky barrier rectifier designed
for high frequency switched mode power supplies
and DC to DC converters.

Packaged in D²PAK, this device is intended for
use in low voltage, high frequency inverters, free­wheeling and polarity protection for automotive
applications.

STPS40L45C-Y

Automotive power Schottky rectifier

Datasheet − production data

A1

K

A2

K

A2

A1

D²PAK

STPS40L45CGY

’

Table 1. Device summary

Symbol Value

I

F(AV)

V

RRM

(max) 150 °C

T

j

V

(max) 0.49 V

F

2 x 20 A

45 V

June 2012 Doc ID 023224 Rev 1 1/7

This is information on a product in full production.

www.st.com

7

Characteristics STPS40L45C-Y

1 Characteristics

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

Symbol Parameter Value Unit

V

I

F(RMS)

I

F(AV)

I

FSM

I

RRM

I

RSM

P

T

Repetitive peak reverse voltage 45 V

RRM

Forward rms current 30 A

Average forward current

=130 °C

T

c

δ = 0.5

per diode
per device

Surge non repetitive forward current tp = 10 ms sinusoidal 230 A

Repetitive peak reverse current tp = 2 µs square F = 1 kHz 2 A

Non repetitive peak reverse current tp = 100 µs square 3 A

Repetitive peak avalanche power tp = 1 µs Tj = 25 °C 8100 W

ARM

Storage temperature range -65 to + 150 °C

stg

T

Operating junction temperature

j

(1)

-40 to + 150 °C

20
40

dV/dt Critical rate of rise of 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

R

R

th (j-c)

th(c)

Junction to case

Per diode

To ta l

Coupling 0.1 °C/W

1.5

0.8

°C/W

A

When the diodes 1 and 2 are used simultaneously :
ΔT

(diode 1) = P(diode1) x R

j

Table 4. Static electrical characteristics (per diode)

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

th(j-c)

Symbol Parameter Test conditions Min. Typ. Max. Unit

= 25 °C

T

Reverse leakage

(1)

I

R

current

(1)

V

1. Pulse test: tp = 380 µs, δ < 2%

Forward voltage drop

F

j

= 125 °C 140 280 mA

T

j

= 25 °C IF = 20 A 0.53

T

j

T

= 125 °C IF = 20 A 0.42 0.49

j

= 25 °C IF = 40 A 0.69

T

j

T

= 125 °C IF = 40 A 0.6 0.7

j

= V

V

R

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

2/7 Doc ID 023224 Rev 1

F(AV)

+ 0.0105 I

F2(RMS)

RRM

th(c)

.

0.6 mA

V

STPS40L45C-Y Characteristics

Figure 1. Average forward power dissipation

versus average forward current
(per diode)

P

(W)

F(AV)

16

14

12

10

8

6

4

2

0

0 2 4 6 8 1012141618202224

δ = 0.05

δ = 0.1

I

F(AV)

δ = 0.2

(A)

δ = 0.5

δ = tp/T

δ = 1

T

t

p

Figure 3. Normalized avalanche power

derating versus pulse duration

P(tp)

ARM

P (1 µs)

ARM

1

0.1

0.01

t (µs)

0.001

0.10.01 1

10 100 1000

p

Figure 2. Average forward current versus

ambient temperature
(

δ = 0.5, per diode)

I

(A)

F(AV)

22

20

18

16

14

12

10

8

6

4

2

0

T

δ = tp/T

0 25 50 75 100 125 150

t

p

R

th(j-a)

R

th(j-a)

= 15 °C/W

T

amb

= R

th(j-c)

(°C)

Figure 4. Normalized avalanche power

derating versus junction
temperature

P(T)

ARM j

P (25 °C)

ARM

1.2

1

0.8

0.6

0.4

0.2

T (°C)

0

25 50 75 100 125

j

150

Figure 5. Non repetitive surge peak forward

current versus overload duration
(maximum values, per diode)

IM(A)

250

225

200

175

150

125

100

75

50

25

0

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

t(s)

Tc = 25 °C

Tc = 75 °C

Tc = 125 °C

Doc ID 023224 Rev 1 3/7

Figure 6. Relative variation of thermal

impedance junction to case versus
pulse duration

Z

th(j-c)/Rth(j-c)

1.0

0.8

δ

= 0.5

0.6

0.4

δ

= 0.2

δ

= 0.1

0.2

0.0
1E-4

Single pulse

tp(s)

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

δ = tp/T

T

t

p

Characteristics STPS40L45C-Y

Figure 7. Reverse leakage current versus

reverse voltage applied
(typical values, per diode)

IR(mA)

1E+3

1E+2

1E+1

1E+0

1E-1

1E-2

0 5 10 15 20 25 30 35 40 45

Tj= 150 °C

Tj= 125 °C

Tj= 75 °C

Tj= 25 °C

VR(V)

Figure 9. Forward voltage drop versus

forward current (maximum values,
per diode)

IFM(A)

1000

100

10

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)

Figure 8. Junction capacitance versus

reverse voltage applied
(typical values, per diode)

C(nF)

10.0

F=1MHz
Tj=25°C

1.0

0.1
1

VR(V)

10 100

Figure 10. Thermal resistance junction to

ambient versus copper surface
under tab.

R (°C/W)

th(j-a)

80

epoxy printed board FR4, copper thickness = 35 µm

70

60

50

40

30

20

10

0

0 5 10 15 20 25 30 35 40

S

(Cu)

(cm²)

4/7 Doc ID 023224 Rev 1

STPS40L45C-Y Package information

m

D

2 Package information

● Epoxy meets UL94, V0

● Cooling method: by conduction (C)

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. D

®

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

®

is an ST trademark.

2

PAK dimensions

.

Dimensions

Ref.

Millimeters Inches

Min. Max. Min. Max.

A 4.40 4.60 0.173 0.181

A

L2

E

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

L

L3

G

A1

B2

B

C

R

A2

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

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

M

*

V2

* FLAT ZONE NO LESS THAN 2m

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

R 0.40 typ. 0.016 typ.

V2 0° 8° 0° 8°

Figure 11. Footprint (dimensions in mm)

16.90

10.30

Doc ID 023224 Rev 1 5/7

8.90

5.08

1.30

3.70

Ordering information STPS40L45C-Y

3 Ordering information

Table 6. Ordering information

Order code Marking Package Weight Base qty Delivery mode

STPS40L45CGY-TR STPS40L45CGY D²PAK 1.8 g 500 Tape and Reel

4 Revision history

Table 7. Document revision history

Date Revision Changes

25-Jun-2012 1 First issue.

6/7 Doc ID 023224 Rev 1

STPS40L45C-Y

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Doc ID 023224 Rev 1 7/7