ST STPS3H100 User Manual

STPS3H100

Power Schottky rectifier

Features

■Negligible switching losses

■High junction temperature capability

■Low leakage current

■Good trade-off between leakage current and forward voltage drop

■Avalanche capability specified

Description

These Schottky rectifiers are designed for high frequency miniature switched mode power supplies such as adaptators and on board DC/DC converters. They are available in SMB, and lowprofile SMB.

A	A
K	K
SMB	SMB flat
STPS3H100U	STPS3H100UF

Table 1.	Device summary
	Symbol		Value
	IF(AV)		3 A
	VRRM		100 V
	Tj (max)		175 °C
	VF (max)		0.68 V

January 2010

Doc ID 16776 Rev 1

1/9

www.st.com

Characteristics	STPS3H100

1 Characteristics

Table 2.

Absolute ratings (limiting values)

Symbol

Parameter

Value

Unit

VRRM

Repetitive peak reverse voltage

100

V

IF(AV)

Average forward current

SMB

TL = 115 °C δ = 0.5

3

A

SMB flat

TL = 140 °C δ = 0.5

IFSM

Surge non repetitive forward current

tp =10 ms sinusoidal

75

A

PARM

Repetitive peak avalanche power

tp = 1 µs

Tj = 25 °C

2400

W

Tstg

Storage temperature range

-65 to + 175

°C

T

Operating junction temperature (1)

175

°C

j

1.

dPtot <

1

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

Rth(j-a)

dTj

Table 3.

Thermal resistance

Symbol

Parameter

Value

Unit

Rth(j-l)

Junction to lead

SMB

25

°C/W

SMB flat

15

Table 4.

Static electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

I

(1)

Reverse leakage current

Tj = 25 °C

V

= V

-

-

1

µA

RRM

R

Tj = 125 °C

R

-

0.4

1

mA

Tj = 25 °C

IF = 3 A

-

-

0.84

VF(2)

Forward voltage drop

Tj = 125 °C

-

0.63

0.68

V

Tj = 25 °C

IF = 6 A

-

-

0.92

Tj = 125 °C

-

0.71

0.76

1.Pulse test: tp = 5 ms, δ < 2%

2.Pulse test: tp = 380 µs, δ < 2%

To evaluate the conduction losses use the following equation:

P = 0.6 x IF(AV) + 0.027 IF2(RMS)

2/9	Doc ID 16776 Rev 1

STPS3H100	Characteristics
Figure 1. Average forward power dissipation Figure 2.	Average forward current versus
versus average forward current	ambient temperature (δ = 0.5)

	PF(AV)(W)
2.6
2.4	δ=0.05	δ=0.1	δ=0.2	δ=0.5	δ=1
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6				T
0.4	IF(AV)(A)
0.2				δ=tp/T	tp
0.0

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

IF(AV)(A)

3.5

Rth(j-a)=Rth(j-l)

3.0

SMB flat

2.5

2.0

SMB

1.5

1.0	T
0.5		Tamb(°C)
δ=tp/T	tp

0.0

0

25

50

75

100

125

150

175

Figure 3. Normalized avalanche power	Figure 4. Normalized avalanche power
derating versus pulse duration	derating versus junction
	temperature

PARM(tp)							PARM(Tj)
PARM(1 µs)						PARM(25 °C)
1
						1.2
						1
0.1						0.8
						0.6
0.01						0.4
						0.2
			tp(µs)						Tj(°C)
0.001						0
0.01	0.1	1	10	100	1000	25	50	75	100	125	150

Figure 5. Non repetitive surge peak forward Figure 6.	Non repetitive surge peak forward
current versus overload duration	current versus overload duration
(maximum values) (SMB)	(maximum values) (SMB flat)

IM(A)				IM(A)
12				40
11			SMB				SMB flat
				35
10
9				30
8				25
7			Ta=25 °C
6				20			TL=25 °C
5			Ta=75 °C
				15			TL=75 °C
4
3			Ta=125 °C	10			TL=125 °C
2	IM			IM
1	t	t(s)		5	t	t(s)
	δ =0.5				δ =0.5
0				0
1.E-03	1.E-02	1.E-01	1.E+00	1.E-03	1.E-02	1.E-01	1.E+00

Doc ID 16776 Rev 1

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