STEVAL-ISA058V1 board description

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STEVAL-ISA058V1 board description

2.1

Electrical specifications

The electrical specifications of the STEVAL-ISA058V1 demonstration board are listed in

Table 1

.

These electrical specifications often meet the requirements of an auxiliary power supply for

LCD or PDP TVs and external adapters.

2.2

Schematic and bill of material

The schematic of the board is shown in Figure 3 and the bill of materials is given in Table 2.

Figure 3.

STEVAL-ISA058V1 schematic

Table 1.

Electrical specifications

Symbol

Parameter

Value

Input voltage range

Output voltage

5 V

Max output current

1 A

Precision of output regulation

±5%

High frequency output voltage ripple

50 mV

D1

BAT46

C4

22uF 25V

R3

33k

L1 4.7uH

C10

YK 47uF 25V

C7

22nF

C6

1.8nF

D4

STPS5L40

C9

MCZ 1000uF 10V

VR1

TS431

R8

120k 1%

R9

39k 1%

R10

220k

1

2

BR1

BRIDGE

C11

15nF

C3

4.7uF 400V

D3

STTH1L06

J1

CON2

F1

1A FUSE

t

NTC1

15 Ohm NTC

T2

BU9 -103R25BL

C1

100nF X2

D2

1N4148

R14

130k

R12

33k

C8 Y1 1nF

C2

10uF 400V

R13

2.2k

OPTO1

PC817 D

4

5

10

7

2

1

6

9

3

T1

TRANSFORMER

5V 1A

D5

P6KE220

R15

15k

1

2

J2

CON2

3

5

BR

CONT

DRAIN

SOURCE

CONTROL

VDD

FB

U1

VIPER17LN

R17

3.3