ST STPS1L40-Y User Manual

Automotive low drop power Schottky rectifier

Features

■ Very small conduction losses

■ Negligible switching losses

■ Low forward voltage drop

■ Surface mount miniature packages

■ Avalanche capability specified

■ AEC-Q101 qualified

■ ECOPACK

Description

Single chip Schottky rectifiers suited to switched mode power supplies and high frequency DC to DC converters.

Packaged in SMA and SMB this device is especially intended for surface mounting and used in low voltage, high frequency inverters, free wheeling and polarity protection in automotive applications.

®

2 compliant components

STPS1L40-Y

A

K

SMA

(JEDEC DO-214AC)

STPS1L40AY

Table 1. Device summary

Symbol Value

I

F(AV)

V

RRM

(max) 150 °C

T

j

(max) 0.42 V

V

F

(JEDEC DO-214AA)

A

K

SMB

STPS1L40UY

1 A

40 V

October 2011 Doc ID 18247 Rev 1 1/9

www.st.com

9

Characteristics STPS1L40-Y

1 Characteristics

Table 2. Absolute ratings (limiting values)

Symbol Parameter Value Unit

V

I

F(RMS)

I

F(AV)

I

P

T

Repetitive peak reverse voltage 40 V

RRM

Forward rms current 8 A

Average forward current TL = 130 °C δ = 0.5 1 A

Surge non repetitive forward current tp = 10 ms sinusoidal 60 A

FSM

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

RRM

Non repetitive peak reverse current tp = 100 µs square 1 A

RSM

Repetitive peak avalanche power tp = 1 µs Tj = 25 °C 900 W

ARM

Storage temperature range - 65 to + 150 °C

stg

Operating junction temperature range

T

j

(1)

-40 to + 150 °C

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 resistance

Symbol Parameter Value Unit

SMA 30

R

Table 4. Static electrical characteristics

th(j-l)

Junction to lead

SMB 25

°C/W

Symbol Parameter Tests conditions Min. Typ. Max. Unit

T

= 25 °C

(1)

I

R

V

1. Pulse test: tp = 380 µs, δ < 2%

Reverse leakage current

(1)

Forward voltage drop

F

j

T

= 125 °C - 6 10 mA

j

= 25 °C

T

j

T

= 125 °C - 0.37 0.42

j

T

= 25 °C

j

= 125 °C - 0.5 0.61

T

j

V

I

F

I

F

To evaluate the conduction losses use the following equation: P = 0.23 x I

2/9 Doc ID 18247 Rev 1

F(AV)

+ 0.19 I

F2(RMS)

= V

R

= 1 A

= 2 A

- - 35 µA

RRM

--0.5

V

- - 0.63

STPS1L40-Y Characteristics

Figure 1. Average forward power dissipation

versus average forward current

P

(W)

F(AV)

0.8

0.7

δ = 0.05

0.6

0.5

0.4

0.3

0.2

0.1

0.0

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

δ = 0.1

δ = 0.2

I

F(AV)

(A)

δ = 0.5

δ = 1

δ = tp/T

T

t

p

Figure 3. Average forward current versus

ambient temperature (SMB, δ = 0.5)

I

(A)

F(AV)

1.2

1.0

0.8

0.6

R

th(j-a)

= R

th(j-l)

= 100 °C/W

SMB

Figure 2. Average forward current versus

ambient temperature (SMA, δ = 0.5)

I

(A)

F(AV)

1.2

R

= R

th(j-a)

1.0

0.8

0.6

0.4

0.2

0.0

T

δ = tp/T

0 25 50 75 100 125

t

p

R

th(j-a)

th(j-l)

= 120 °C/W

T

amb

SMA

(°C)

Figure 4. Normalized avalanche power

derating versus pulse duration

P(tp)

ARM

P (1 µs)

ARM

1

0.1

150

0.4

0.2

0.0

T

δ = tp/T

0 25 50 75 100 125 150

t

p

T

amb

(°C)

Figure 5. Normalized avalanche power

derating versus junction temperature

P(Tj)

ARM

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

0.01

t (µs)

0.001

0.10.01 1

p

10 100 1000

Figure 6. Non repetitive surge peak forward

current versus overload duration (maximum values, SMA)

IM(A)

7

6

5

4

3

2

I

M

1

0

1.E-04 1.E-03 1.E-02 1.E-01 1.E+00

δ = 0.5

t

t(s)

SMA

Ta= 25 °C

Ta= 75 °C

Ta= 125 °C

Doc ID 18247 Rev 1 3/9