UM0584

Demonstration board description

Doc ID 14974 Rev 1

7/9

R19

1 k

Ω

Resistor

R20

2.2

Ω

Resistor

R21

2.2

Ω

Resistor

R22

4.7 k

Ω

Resistor, 0.25 W TRH

R23

12 k

Ω

Resistor

R24

3.9 k

Ω

Resistor

R25

4.7 k

Ω

Resistor

R26

2.2 k

Ω

Resistor

R27

3.3 k

Ω

Resistor

R28

10 k

Ω

Resistor, 0.25 W 1%

R29

5.6 k

Ω

Resistor

R30

1.2 k

Ω

Resistor, 0.25 W 1%

T1

0603261

Switch mode transformer - Tronic

U1

L6565

STMicroelectronics quasi resonant controller

U2

PC817

Optocoupler - Sharp

U4

L5970AD

STMicroelectronics - 1.5 A switch step-down switching regulator

U5

TL431

STMicroelectronics programmable shunt voltage reference 1%

M1

STW4N150

STMicroelectronics MOSFET 1500 V - 5

Ω - 4 A

Q11

BC547 (n.m.)

Small signal PNP transistor

Table 2.

STEVAL-ISA031V1 bill of materials (continued)

Reference

Value

Description