Circuit schematic and PCB layout

STEVAL-ISA010V1

2/4

Doc ID 15674 Rev 1

1

Circuit schematic and PCB layout

Figure 1.

Schematic diagram

Figure 2.

PCB layout of the buck converter (top, bottom, bottom layout)

R

9 1 kΩ

C

7 1.8 nF

R

2 750 kΩ

R

5 750 k

Ω

R

6

750 k

Ω

R

8

750 k

Ω

C

1

150 nF / X2

D

3

1N4007

L

1

2.2 mH

D

5

STTH108

D

6

15 V

D

2

STTH108

C

3

10 µF / 450 V

C

9

10 µF

/ 35V

C

5

220 µF

/ 25 V

L

2

1 mH

R

1

22

Ω

R

4

9.1 k

Ω

R

3

24 k

Ω

2

J

1

85 - 500 VAC

C

2

150 nF / X2

C

6

10 µF

/ 35 V

1

2

3

J

2

Output

C

8

100 nF

D

1

1N4148

3

1

2

VOUT

VIN

GND

U

2

L78L05

D

4

1N4007

Drain

7

Drain

8

S

1

VDD

2

FB

4

COMP

5

LIM

3

U

1

VIPer16

C

4

10 µF /

450 V

R

7

N.A.

AM00361