ST ISA081V1 User Manual

STEVAL-ISA081V1

12 V /1 A SMPS wide range demonstration board based on the VIPER26

Data brief

Features

■Vin: 85 ~ 305 Vrms / f: 45 ~ 66 Hz

■Vout1: 12 VDC ± 10 %, 1 A (at 3.3 V not loaded)

■Vout2: 3.3 VDC ± 4 %, 100 mA

■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 x 90 mm

■Isolation: isolated 4 kV / 8 mm

■EMI: according to EN55022 Class

STEVAL-ISA081V1

■ RoHS compliant

Description

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

Schematic diagram	STEVAL-ISA081V1

1 Schematic diagram

Figure 1. Circuit schematic

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