ST STPS1045 User Manual

STPS1045

Power Schottky rectifier

Main product characteristics

I

F(AV)

V

RRM

V

F

10 A

45 V

0.57 V

Features and Benefits

■ Very small conduction losses

■ Negligible switching losses

■ Extremely fast switching

■ Low forward voltage drop

■ Insulated package: TO-220FPAC

Insulating voltage = 2000V DC
Capacitance = 12 pF

■ Avalanche capability specified

Description

Single chip Schottky rectifier suited for Switch
Mode Power Supply and high frequency DC to
DC converters.

K

TO-220AC

STPS1045D

AK

A

TO-220FPAC

STPS1045FP

A

K

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

March 2007 Rev 6 1/8

www.st.com

8

Characteristics STPS1045

1 Characteristics

Table 1. Absolute Ratings (limiting values)

Symbol Parameter Value Unit

V

RRM

I

F(RMS)

I

F(AV)

I

FSM

P

ARM

T

T

Repetitive peak reverse voltage 45 V

RMS forward voltage 30 A

Average forward

TO-220AC Tc = 150° C

current
δ = 0.5

TO-220FPAC T

Surge non repetitive forward current

Repetitive peak reverse current

Repetitive peak avalanche power

Storage temperature range -65 to + 175 °C

stg

Maximum junction temperature 175 °C

j

= 145° C

c

= 10 ms

t

p

sinusoidal

t

= 2 µs

p

F = 1 kHz

= 1 µs Tj = 25°

t

p

C

10 A

180 A

1A

4000 W

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

Table 2. Thermal resistances

Symbol Parameter Value Unit

TO-220AC 2.2

R

Table 3. Static electrical characteristics

th(j-c)

Junction to case

TO-220FPAC 4.5

°C/W

Symbol Parameter Test Conditions Min. Typ. Max. Unit

T

= 25° C

(1)

I

V

1. Pulse test: tp = 5 ms, δ < 2%

2. Pulse test: tp = 380 µs, δ < 2%

Reverse leakage current

R

(2)

Forward voltage drop

F

j

= 125° C 15 mA

T

j

T

= 25° C IF = 20 A 0.84

j

= 125° C IF = 20 A 0.72

j

= 125° C IF = 10 A 0.60

T

j

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

2/8

F(AV)

+ 0.015 I

F2(RMS)

= V

V

R

RRM

VT

100 µA

STPS1045 Characteristics

Figure 1. Average forward power dissipation

versus average forward current

P (W)

F(AV)

8

7

6

5

4

3

2

1

0

0123456789101112

δ = 0.05

δ = 0.1

δ = 0.2

I (A)

F(AV)

δ = 0.5

δ

=tp/T

δ = 1

T

tp

Figure 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

Figure 5. Non repetitive surge peak forward

current versus overload duration
(maximum values) (TO-220AC)

Figure 2. Average forward current versus

ambient temperature (δ = 0.5)

I (A)

F(AV)

12

10

8

6

4

2

0

0 25 50 75 100 125 150 175

δ

=tp/T

T

tp

R=R

R =15°C/W

th(j-a)

T (°C)

amb

th(j-a) th(j-c)

TO-220AC

TO-220FPAC

Figure 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

25 50 75 100 125 150

T (°C)

j

Figure 6. Non repetitive surge peak forward

current versus overload duration
(maximum values) (TO-220FPAC)

I (A)

M

160

140

120

100

80

60

40

IM

20

0

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

δ=0.5

t

t(s)

T =50°C

T =100°C

C

T =150°C

C

I (A)

M

100

90

80

70

60

C

50

40

30

IM

20

10

0

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

δ=0.5

t

t(s)

3/8

T =50°C

C

T =100°C

C

T =150°C

C