Datasheet STR7002 Datasheet (Sanken Electric Co)

●STR7000+SI-8020 Series

STR7000+SI-8020 Series

Separate Excitation Switching Type

■Features

• High output current (6A:STR7000 series, 12A: STR7100 series)

• High efficiency (70 to 90%)

• Wide DC input voltage range

• Built-in drooping type overcurrent protection circuit

• Foldback type overcurrent protection can be set externally.

• Output voltage adjustment

• Built-in reference oscillator (35kHz)

• Output ON/OFF control

■Applications

• Electronic equipment

■Lineup

IO (A)

12

VO (V)

6

STR7001+SI-8020 STR7002+SI-8021 STR7002+SI-8022 STR7003+SI-8023
STR7101+SI-8020 STR7102+SI-8021 STR7102+SI-8022 STR7103+SI-8023

5121524

■Absolute Maximum Ratings
Power Section: STR7000/STR7100 (Ta=25°C)

Parameter

Power Transistor Breakdown Voltage
Drive T r ansistor Breakdown Voltage
Diode Breakdown Voltage
Collector Current

Power Dissipation

Power Transistor Thermal Resistance
Power Transistor Junction T emperature
Operating T emperature
Storage T emperature

Symbol

V4-1
V4-5
V1-2

IC
PD1
PD2

Rth(j-c)

Tj
TOP
TStg

■Control Section: SI-8020 Series (Ta=25°C)

Paraneter
DC Input Voltage
Power Dissipation
Operating T emperature
Storage T emperature

Symbol

VIN

PD
TOP
TStg

Ratings

STR7000 Series STR7100 Series

60
60
60

6(peak 7.5) 12(peak 15)

100(TC=25°C) 125(TC=25°C)

4.3(Without heatsink)

1.25 1.0
+150

–30 to +125(TC)

–30 to +125

Ratings

55

1

–20 to +85

–20 to +100

Unit

V
V
V

A
W
W

°C/W

°C
°C
°C

Unit

V
W

°C
°C

86

●STR7000+SI-8020 Series

■Electrical Characteristics: 6A Type

Parameter

DC Input Voltage Range
Output Voltage

Efficiency

Switching Frequency

Line Regulation

Load Regulation

Ripple Rejection

Overcurrent Protection Starting Current
Limited Current at Overcurrent
Protection Operation

Symbol

VIN

Conditions

Conditions

Conditions

∆VOLINE

Conditions

∆VOLOAD

Conditions
RREJ
Conditions

Conditions

VO

η

f

IS1
IS2

STR7001+SI-8020 STR7002+SI-8021 STR7002+SI-8022 STR7003+SI-8023

min. typ. max. min. typ. max. min. typ. max. min. typ. max.

11 40 18 50 21 50 30 50

5.0 5.1 5.2 11.8 12.0 12.2 14.8 15.0 15.2 23.7 24.0 24.3
VIN=20V, IO=3.0A VIN=27V, IO=3.0A VIN=30V, IO=3.0A VIN=40V, IO=3.0A

VIN=20V, IO=3.0A VIN=27V, IO=3.0A VIN=30V, IO=3.0A VIN=40V, IO=3.0A

VIN=20V, IO=3.0A VIN=27V, IO=3.0A VIN=30V, IO=3.0A VIN=40V, IO=3.0A

VIN=15 to 25V, IO=3.0A VIN=22 to 32V, IO=3.0A VIN=25 to 35V, IO=3.0A VIN=35 to 45V, IO=3.0A

VIN=20V, IO=1 to 5A VIN=27V, IO=1 to 5A VIN=30V, IO=1 to 5A VIN=40V, IO=1 to 5A

f=100 to 120H

6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5

6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5

■Electrical Characteristics: 12A Type

Parameter

DC Input Voltage Range
Output Voltage

Efficiency

Switching Frequency

Line Regulation

Load Regulation

Ripple Rejection

Overcurrent Protection Starting Current
Limited Current at Overcurrent
Protection Operation

Symbol

VIN

Conditions

Conditions

Conditions

∆VOLINE

Conditions

∆VOLOAD

Conditions
RREJ
Conditions

Conditions

VO

IS1
IS2

STR7101+SI-8020 STR7102+SI-8021 STR7102+SI-8022 STR7103+SI-8023

min. typ. max. min. typ. max. min. typ. max. min. typ. max.

11 40 18 50 21 50 30 50

5.0 5.1 5.2 11.8 12.0 12.2 14.8 15.0 15.2 23.7 24.0 24.3
VIN=20V, IO=6.0A VIN=27V, IO=6.0A VIN=30V, IO=6.0A VIN=40V, IO=6.0A

η

VIN=20V, IO=6.0A VIN=27V, IO=6.0A VIN=30V, IO=6.0A VIN=40V, IO=6.0A

f

VIN=20V, IO=6.0A VIN=27V, IO=6.0A VIN=30V, IO=6.0A VIN=40V, IO=6.0A

VIN=15 to 25V, IO=6.0A VIN=22 to 32V, IO=6.0A VIN=25 to 35V, IO=6.0A VIN=35 to 45V, IO=6.0A

VIN=20V, IO=3 to 9A VIN=27V, IO=3 to 9A VIN=30V, IO=3 to 9A VIN=40V, IO=3 to 9A

f=100 to 120H
12 15 12 15 12 15 12 15
12 15 12 15 12 15 12 15

Ratings

72 84 86 90

35 35 35 35

80 120 150 200

30 40 40 50

45 45 45 45

Z

f=100 to 120H

Z

f=100 to 120H

Z

f=100 to 120H

RS=0.02Ω RS=0.02Ω RS=0.02Ω RS=0.02Ω

Ratings

70 82 84 87

35 35 35 35

80 120 150 200

30 40 40 50

45 45 45 45

Z

f=100 to 120H

Z

f=100 to 120H

Z

f=100 to 120H

RS=0.01Ω RS=0.01Ω RS=0.01Ω RS=0.01Ω

Z

Z

(Ta=25°C)

Unit

V
V

%

kHZ

mV

mV

dB

A
A

(Ta=25°C)

Unit

V
V

%

kHZ

mV

mV

dB

A
A

87

●STR7000+SI-8020 Series

■Outline Drawing

±0.3

12.0

2.0

+0.2

1.0

–0.1

qwert

3.5

Plastic Mold Package
Flammability: UL94V-0
Weight: Approx. 14.5g

STR7000/7100 Series SI-8020 Series

±0.3

36.0

±0.2

24.4

Lot Number
Part Number

±0.3

21.2

6.0

max.
±0.2

2.0

30°

±0.1

3.2

φ

1 Pin

30

max.

Part Number

DOT

Lot Number

5.45×4

5.45

max.

4.7

min.

20.0

3.0

+0.2

0.6

–0.1

q SWOUT(backside of case)

0.5

2.54
7

123456789

±0.05

±0.1

max.

w Fly Wheel(ground)
e Drive
r VIN
t GND

Plastic Mold Package
(powder coating)
Weight: Approx. 3.4g

(unit: mm)

6

max.

max.

25

10

±0.05

0.27

±1.0

4.5

■Block Diagram

DRIVE

STR7000/7100 Series SI-8020 Series

V

IN

4

3

52

GND F.WHEEL

SW.OUT

1

VIN 10

VOLTAGE

REFERENCE

and

REGULATOR

DEAD TIME
CONTROLLED
RAMP
GENERATOR

+
–

9

OSC.OUT SHUT DOWN

PWM COMP

+
–

O AMPIO AMP

V

+
–

COMPENSATION. BCOMPENSATION. ACURR.SENSE

7 V

REF

5 DRIVE

1 GND

2 V

O ADJ

3VO.SENSE684

88

■Standard External Circuit

VIN

C1

2200µF

4

VIN

STR7000
STR7100
SERIES

25

DRIVE

GNDF/W

●STR7000+SI-8020 Series

...

5V

200µH

12V

...

250µH

15V

3

2

9

4

...

24V

300µH

VO. ADJ

OSC. OUT
SHUT DOWN

V

O

C

4

1500µF × 2 (parallel)

5

GND

1

L

VO.S

C.S

1

SW

3

*

C5 330P

DRIVE

10

VIN

8

SI-8020

C.A

C
330p

C3
10µF

2

SERIES

6

C.B

7

V

REF

C5 STR7100 Series only

*

6A
12A

RS

...

0.02Ω

...

0.01Ω

GND

■Notes of Pattern Design

1) Thick lines in the Standard External Circuit are lines through which a large current flows. Make these pattern lines as thick as possible.

2) Place capacitor C1 on the input side as closely as possible to terminals no.2 and no.4 of the STR7000/7100 series. C1 may be used in
combination with a smoothing capacitor for rectifying, but the abov e points must be taken into consideration. In cases where C1 is not pro vided
or it is placed too far from the terminals stated above, abnormal oscillation due to poorer transient response or increased ringing may occur.

3) Connect voltage sensing terminal VO.S and GND as closely as possible to output capacitor C4 (a current of approximately 1mA flows into the
VO.S terminal). If the y are placed too far from C4, abnormal oscillation due to decreased regulation or increased switching ripple may occur.

4) Connect current sensing terminal C.S and GND as closely as possible to the detection resistor Rs (a current of approximately 0.5mA flows
from the CS terminal).
If they are placed too far from Rs, a decrease of the overcurrent setting point due to the voltage drop in the pattern, or malfunction of the
protection circuit due to increased ringing may occur.

■Ta-PD Characteristics

STR7000 Series STR7100 Series

40

200×300×2

35

200×200×2

30

(W)

D

100×200×2

25

20

100×100×2

15

75×75×2

10

Power Dissipation P

Without heatsink

5

0
–20 0 25 50 75 100 125

Without Mica
With Silicon Grease
Heatsink: Aluminum
Unit: mm

Ambient Temperature Ta (°C)

40

200×300×2
200×200×2

35

30

(W)

D

100×200×2

25

20

100×100×2

15

75×75×2

10

Power Dissipation P

Without heatsink

5

0
–20 0 25 50 75 100 125

Without Mica
With Silicon Grease
Heatsink: Aluminum
Unit: mm

Ambient Temperature Ta (°C)

89

)

)

●STR7000+SI-8020 Series

■Typical Characteristics

(Ta=25°C)

STR7001+SI-8020(5V) STR7002+SI-8021(12V) STR7003+SI-8023(24V)

Rise Characteristics Rise Characteristics Rise Characteristics

10

20

30

8

6

4

Output Voltage VO (V)

2

0

0

2 4 6 8 10 12 14 16 18 20

3A

6A

=0.1A

O

I

Input Voltage VIN (V)

15

10

5

Output Voltage VO (V)

0

0 5 10 15 20 25 30 35 40 45

=0.1A

O

I

6A

3A

Input Voltage VIN (V)

25

(V)

O

20

=0.1A

O

15

10

I

3A

Output Voltage V

5

0

0 5 10 15 20 25 30 35 40 45

Input Voltage VIN (V)

Efficiency Characteristics Efficiency Characteristics Efficiency Characteristics

100

90

V

80

70

60

50

Efficiency η (%)

40

30

0

01234567

20V

IN

=11V

30V
40V

Output Current IO (A)

100

90

IN

V

80

70

60

Efficiency η (%)

50

40

0

01234 567

40V

=18V

30V

50V

Output Current IO (A)

100

V

IN

90

80

70

60

Efficiency η (%)

50

40

0

01234567

=30V

50V

40V

Output Current IO (A)

6A

STR7101+SI-8020(5V) STR7102+SI-8021(12V) STR7103+SI-8023(24V)

Rise Characteristics Rise Characteristics Rise Characteristics

10

8

(V)

O

6

4

Output Voltage V

2

0

02468101214161820

6 A

=0.1 A

O

l

12 A

Input Voltage VIN (V)

20

15

(V)

O

10

6 A

lo=0.1 A

5

Output Voltage V

0

02051015 253035 4540

12 A

Input Voltage VIN (V)

Efficiency Characteristics Efficiency Characteristics Efficiency Characteristics

100

90

80

70

60

50

Efficiency η (%)

40

30

0

0624 8101214

Output Current IO (A)

VIN=11V

20V

30V

40V

100

90

V

IN

80

70

60

Efficiency η (%)

50

40

0

0624 8101214

Output Current IO (A

=18V

30V

40V

50V

30

25

(V)

20

O

15

10

lo=0.1 A

Output Voltage V

5

0

015510 202530 454035

Input Voltage VIN (V

100

V

IN

90

80

70

60

Efficiency η (%)

50

0

0624 8101214

40V

=30V

50V

Output Current IO (A)

12 A

90