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May 2014

DocID024740 Rev 2

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STEVAL-ISA136V1

3W, 5V output, isolated flyback converter using VIPer™ Plus -

VIPER06HN

Data brief

Features

frequency: 50 - 60 Hz

• Output voltage: 5 V / 0.6 A

• Very compact size

• Stand-by mains consumption: < 30 mW at

• EMI: according to EN55022-Class-B

• RoHS compliant

Description

The STEVAL-ISA136V1 evaluation board

implements a 5 V / 0.6 A isolated flyback 3 W

wide-range mains developed for general-purpose

applications.

The core of the application is the VIPER06HN, a

new off-line 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 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 VIPER06HN operates at fixed frequency (115

kHz). Frequency jittering is implemented, helping

it to meet electromagnetic disturbance standards.

The device is equipped with protection features,

such as delayed overload, open-loop failure and

hysteretic thermal protection, which improve the

reliability and safety of a design.

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