89

sStandard External Circuit

sNotes 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.

or it is placed too far from the terminals stated above, abnormal oscillation due to poorer transient response or increased ringing 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.

STR7000 Series

STR7100 Series

3

2

9

4

330p

10

µF

2200

µF

1500

µF × 2 (parallel)

GND

1

25

5

1

10

8

6

7

3

4

GND

F/W

DRIVE

STR7000

STR7100

SERIES

SW

OSC. OUT

SHUT DOWN

C.S

C.A

C.B

GND

DRIVE

L

*

6A ... 0.02

Ω

12A ... 0.01

Ω

5V ... 200

µH

12V ...

250

µH

15V

24V ... 300

µH

SI-8020

SERIES

40

35

30

25

20

15

10

5

0

–20

0

25

50

75

100

125

°C)

200

×300×2

200

×200×2

100

×200×2

100

×100×2

75

×75×2

Without heatsink

Without Mica

With Silicon Grease

Heatsink: Aluminum

Unit: mm

40

35

30

25

20

15

10

5

0

–20

0

25

50

75

100

125

°C)

200

×300×2

200

×200×2

100

×200×2

100

×100×2

75

×75×2

Without heatsink

Without Mica

With Silicon Grease

Heatsink: Aluminum

Unit: mm

qSTR7000+SI-8020 Series