ST ISA081V1 User Manual

12 V /1 A SMPS wide range demonstration board

Features

■ Vin: 85 ~ 305 Vrms / f: 45 ~ 66 Hz

■ V

■ V

■ Maximum total output current: 1 A

■ Standby < 120 mW at 230 VAC

■ Short-circuit: protected

■ PCB type and size: FR4, single-side 35 µm, 32

■ Isolation: isolated 4 kV / 8 mm

■ EMI: according to EN55022 Class

■ RoHS compliant

Description

: 12 VDC ± 10 %, 1 A (at 3.3 V not loaded)

out1

: 3.3 VDC ± 4 %, 100 mA

out2

x 90 mm

STEVAL-ISA081V1

based on the VIPER26

Data brief

STEVAL-ISA081V1

The STEVAL-ISA081V1 demonstration board is a
switched mode power supply (SMPS)
demonstration board and it is an isolated SMPS
capable of delivering a 12 W output over a wide
input voltage range.

It is designed for a mains application focusing on
cost and size effective solutions.

The STEVAL-ISA081V1 SMPS generates 12 V
nominal output voltage using primary regulation
and it is based on the VIPER26 monolithic
converter, integrating a high voltage MOSFET
and PWM controller in one package.

November 2010 Doc ID 18139 Rev 1 1/4

For further information contact your local STMicroelectronics sales office.

www.st.com

4

Schematic diagram STEVAL-ISA081V1

1 Schematic diagram

Figure 1. Circuit schematic

&4

2!

$

2/4 Doc ID 18139 Rev 1