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12 V, 150 mA non-isolated buck converter using VIPer™ Plus - VIPER06XS
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The STEVAL-ISA115V1 demonstration board is a 12 V / 0.15 A power supply set in buck topology with the VIPER06XS, a new off-line high voltage converter by STMicroelectronics.

The features of the device include an 800 V avalanche rugged power section, PWM operation at 30 kHz with frequency jittering for lower EMI, current limiting with adjustable set point, onboard soft-start, a safe auto-restart after a fault condition and low standby power consumption.

Available protection features include thermal shutdown with hysteresis, delayed overload protection and open loop failure protection. All protection is auto-restart mode.

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Data Brief

Key Features

  • Universal input mains range:
  • input voltage: 90 VAC - 264 VAC
  • frequency: 45 Hz - 65 Hz
  • Single-output voltage: 12 V @ 0.15 A continuous operation
  • Standby mains consumption: < 50 mW @ 265 VAC
  • Average efficiency: > 75%
  • Fully protected against faults (overload, feedback disconnection and overheating)
  • EMI: in accordance with EN55022-Class-B
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1920: 12 V, 150 mA non-isolated buck converter using VIPerâ„¢ Plus - VIPER06XS
2.0 108 KB

Application Notes

Description Version Size
AN4260: 12 V, 150 mA non-isolated buck converter using the VIPER06XS, from the VIPerâ„¢ plus family
4.0 3,580 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISA115V1 gerber files
1.0 151 KB

Bill of Materials

Description Version Size
3.0 54 KB

Schematic Pack

Description Version Size
STEVAL-ISA115V1 schematics
1.0 16 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA115V1ActiveVIPER06XSBuy Direct71.05Distributor reported inventory date: 2015-10-09
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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