ST STPS1545 User Manual

Main product characteristics

I

F(AV)

V

RRM

T

(max) 175° C

j

(max) 0.57 V

V

F

15 A

45 V

Features and Benefits

■ Very small conduction losses

■ Negligible switching losses

■ Extremely fast switching

■ Insulated package: TO-220FPAC

insulating voltage = 2000V DC capacitance = 12 pF

■ Avalanche capability specified

Description

STPS1545

Power Schottky rectifier

A

K

TO-220AC

STPS1545D

2

I

PAK

STPS1545R

A

K

A

TO-220FPAC

STPS1545FP

K

2

D

STPS1545G

A

K

A

NC

PA K

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

Packaged in TO-220AC, TO-220FPAC, I

2

D

PAK, this device is intended for use in low

2

PA K or

voltage, high frequency inverters, free wheeling and polarity protection applications.

March 2007 Rev 6 1/10

www.st.com

10

Characteristics STPS1545

d

-

1 Characteristics

Table 1. Absolute Ratings (limiting values)

Symbol Parameter Value Unit

V

I

F(RMS)

I

F(AV)

Repetitive peak reverse voltage 45 V

RRM

RMS forward voltage 30 A

Average forward current

TO-220AC

2

I

PA K, D2PA K

T

= 155° C

c

δ = 0.5

15 A

TO-220FPAC Tc = 130° C

I

P

T

Surge non repetitive forward current

FSM

Peak repetitive reverse current

RRM

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

RSM

Repetitive peak avalanche power tp = 1 µs Tj = 25°C 6000 W

ARM

Storage temperature range -65 to + 175 °C

stg

T

Maximum operating junction temperature

j

p

Sinusoidal

t

= 2 µs square

p

F = 1 kHz

(1)

220 A

1A

175 °C

= 10 ms

t

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

Ptot

--------------

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

dTj

Table 2. Thermal resistances

1

--------------------------

<

Rth j a–()

Symbol Parameter Value Unit

2

PAK,

1.6

R

th(j-c)

Junction to case

TO-220AC, I D2PA K

TO-220FPAC 4.0

Table 3. Static electrical characteristics (per diode)

°C/W

Symbol Parameter Test Conditions Min. Typ. Max. Unit

T

= 25°C

(1)

I

V

1. Pulse test: tp = 380 µs, δ < 2%

Reverse leakage current

R

(1)

Forward voltage drop

F

j

T

= 125°C 11 40 mA

j

T

= 125°C IF = 15 A 0.5 0.57

j

= 25°C IF = 30 A 0.84

j

T

= 125°C IF = 30 A 0.65 0.72

j

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

2/10

F(AV)

+ 0.01 I

F2(RMS)

= V

V

R

RRM

V T

200 µA

STPS1545 Characteristics

Figure 1. Average forward power dissipation

versus average forward current

P (W)

F(AV)

12

10

8

6

4

2

0

0 2 4 6 8 1012141618

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, I

2

PAK D2PAK)

Figure 2. Average forward current versus

ambient temperature (

I (A)

F(AV)

18

R=R

16

14

12

10

8

6

4

2

=tp/T

δ

0

0 25 50 75 100 125 150 175

R =15°C/W

th(j-a)

T

tp

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

T (°C)

amb

δ = 0.5)

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

200

180

160

140

120

100

80

60

IM

40

20

0

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

δ=0.5

t

t(s)

T =75°C

T =100°C

C

T =125°C

C

I (A)

M

120

100

80

C

60

40

IM

20

0

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

δ=0.5

t

t(s)

3/10

T =75°C

C

T =100°C

C

T =125°C

C