For further information contact your local STMicroelectronics sales office.

June 2013

DocID024830 Rev 1

1/4

4

STEVAL-ISA137V1

Demonstration board based on VIPer06 from the fixed-frequency

VIPer™ plus family

Data brief

Features

frequency: 50 - 60 Hz

• Output voltage: 5 V / 0.6 A

• Very compact size

• Standby mains consumption: < 30 mW at

• Average efficiency: > 65%

• EMI: in accordance with EN55022-Class-B

• RoHS compliant

Description

The STEVAL-ISA137V1 demonstration board

implements an isolated flyback (5 V / 0.6 A) 3 W

wide-range mains developed for general-purpose

applications.

The core of the application is the VIPer06HS, a

new offline high voltage converter from the VIPer

plus family.

The IC combines a high-performance low-voltage

PWM controller chip and an 800 V, avalanche-

rugged power MOSFET in the same package.

The main characteristics of the demonstration

board are its small size, high efficiency and low

standby consumption. Extremely low

consumption under no-load conditions is ensured

thanks to burst mode operation, which reduces

the average switching frequency and minimizes

all frequency-related losses.

The VIPer06HS operates at fixed frequency, 115

kHz. Frequency jittering is implemented, enabling

it to meet the standards for electromagnetic

disturbance. Protection features on the device,

such as delayed overload, open loop failure and

hysteretic thermal protection, improve the

reliability and safety of the design.

Top view

Bottom view

www.st.com