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Wide range non-isolated flyback demonstration board, single-output 12 V/4 W based on the VIPER06HN
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The STEVAL-ISA112V1 demonstration board implements a 4 W single-output wide range mains power supply to be used in applications such as white goods, smaller home appliances, home automation, LED driver, etc.

The board uses the new VIPER06HN, a new offline high voltage converter from the VIPerPlus family by STMicroelectronics. The VIPER06 is specifically designed for fixed frequency flyback converters, combining a high-performance low voltage PWM controller chip and a max. 32 Ω RDS(on), 800 V BV(DSS), avalanche-rugged Power MOSFET in the same package.

The application is optimized for less than 30 mW standby consumption and meets the EPA 2.0 limits, therefore helping to meet the most stringent energy saving requirements.

The STEVAL-ISA112V1 demonstration board implements several forms of protection that considerably increase end-product safety and reliability: overload protection, feedback disconnection, thermal shutdown.

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Data Brief

Key Features

  • Universal input mains range:
  • input voltage 90 - 265 VAC
  • frequency 45 - 65 Hz
  • Single-output voltage: 12 V at 350 mA continuous operation
  • Standby mains consumption: < 30 mW at 230 VAC
  • Average efficiency: > 75%
  • Complying with EuP Lot 6 requirements
  • Fully protected against short-circuit
  • Fully protected against overheating
  • Compliant to EMC norm EN55022-Class-B
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1867: Wide range non-isolated flyback demonstration board, single-output 12 V/4 W based on the VIPER06HN
1.0 2,458 KB

Application Notes

Description Version Size
AN4116: STEVAL-ISA112V1: 12 V/4 W, 115 kHz non-isolated flyback
1.0 3,783 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISA112V1 gerber files
1.0 171 KB

Bill of Materials

Description Version Size
1.0 52 KB

Schematic Pack

Description Version Size
STEVAL-ISA112V1 schematics
1.0 74 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA112V1ActiveV06HN4W-12VFNBuy Direct57.57Distributor reported inventory date: 2016-02-13
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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