Data Brief

For further information contact your local STMicroelectronics sales office.

February 2009

Rev 1

1/4

4

STEVAL-ISA060V1

6 W single output SMPS demonstration board

based on the VIPER17

Features

VRMS

Description

This demonstration board is based on the new

VIPER17 device and implements a standard

single-output isolated flyback converter operating

at fixed frequency that can be 115 kHz or 60 kHz.

The VIPER17 device integrates in the same

package two components: an advanced PWM

controller with built-in BCD6 technology and an

800 V avalanche rugged vertical power MOSFET.

It is very suitable for offline power conversion

operating either with wide range input voltage (85

VAC - 270 VAC) up to 6 W or with single range

input voltage (85 VAC - 132 VAC or 175 VAC - 265

VAC). With European range input voltage (175

VAC - 265 VAC) the device can handle up to 10 W

of output power.

The proposed solution has the advantage of using

few external components compared to a discrete

solution, providing several protections and very

low standby consumption in no-load condition.

The protections present on the device such as

overload and output overvoltage protections,

secondary winding short-circuit protection, hard

transformer saturation and brownout protections

improve the reliability and safety of the design.

The frequency jittering, that is inside

implemented, helps to meet the standards

regarding electromagnetic disturbance.

Moreover internal thermal shutdown and an 800 V

avalanche rugged power MOSFET improve the

robustness of all the system.

If brownout and overvoltage protection are not

necessary, the number of external components is

further reduced.

STEVAL-ISA060V1

www.st.com