STMicroelectronics Wide range (90 V - 265 V) input, 5 V - 12 W output demonstration board with improved standby performance based on VIPER2 STEVAL-ISA103V1 Data Sheet

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to 
change without notice. For further information contact your local STMicroelectronics sales office.

March 2012

Doc ID 022894 Rev 1

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Wide range (90 V - 265 V) input, 5 V - 12  W output demonstration

board with improved standby performance based on VIPER27LN

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V

in

: 90 V - 265 V 

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V

out

: 5 V 

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P

out

: 12 W 

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Very low standby consumption 

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Overload protection 

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Secondary winding short-circuit protection 

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Output overvoltage protection 

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Brownout protection 

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ENERGY STAR® compliant

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RoHS compliant

The STEVAL-ISA103V1 is a wide range input 
demonstration board based on the VIPER27LN 
and suitable for several consumer applications, 
such as LCD or plasma TVs, some models of 
DVD recorders, set-top boxes with hard disk, and 
also desktop computers.

The STEVAL-ISA103V1 includes two modules: 
the main power supply that provides most of the 
power and is off when the application is in 
standby mode and the auxiliary power supply that 
provides energy for specific peripherals such as 
USB ports, remote receivers, and modems.

The auxiliary power supply is also on when the 
application is in standby mode and it is often 
required that its input power be as low as 
possible.

The STEVAL-ISA103V1meets the specifications 
of a wide range of auxiliary power supplies for the 
above mentioned applications and is optimized for 
very low standby consumption, helping to meet 
the most stringent energy-saving requirements.