ST Life.augmented


5 W, 2-output wide-range buck converter based on the VIPER26LD
  • active Active

The STEVAL-ISA116V1 demonstration board implements a double-output power supply set in buck topology using the VIPER26LD, 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 60 kHz with frequency jittering for lower EMI, current limiting with adjustable set point, on-board soft-start, safe auto-restart after a fault condition and low standby power consumption.

The 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: 80 - 280 VAC
  • frequency: 45 - 65 Hz
  • Double-output voltage:
  • 16 V @ 0.3 A continuous operation
  • 5 V through LDO
  • Standby mains consumption: < 100 mW @ 265 VAC
  • Fully protected against faults (overload, feedback disconnection and overheating)
  • EMI: according to EN55022-Class-B
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1899: 5 W, 2-output wide-range buck converter based on the VIPER26LD
1.0 101 KB

Application Notes

Description Version Size
AN4562: STEVAL-ISA116V1: 5 W, 2 output wide range buck converter based on the VIPER26LD
1.0 897 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISA116V1 gerber files
1.0 166 KB

Bill of Materials

Description Version Size
1.0 37 KB

Schematic Pack

Description Version Size
STEVAL-ISA116V1 schematics
1.0 56 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA116V1ActiveVIPER26LDBuy Direct51.45Distributor reported inventory date: 2015-05-24
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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