Wide range single output demonstration board based on the VIPER26HN

The STEVAL-ISA111V1 demonstration board is a 12 V, 1 A power supply set in non-isolated flyback topology using the VIPER26HN, the new offline high voltage converter by STMicroelectronics.

The features include an 800 V avalanche rugged power section, PWM operation at 115 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 a low standby power. The protections include thermal shutdown with hysteresis, delayed overload protection, and open loop failure protection.

Key Features

  • Universal input mains range:
    • input voltage 90 - 264 VAC
    • frequency 45 - 65 Hz
  • Single-output voltage: 12 V at 1 A continuous operation
  • Standby mains consumption: < 30 mW at 230 VAC
  • Average efficiency: > 80%
  • Fully protected against faults (overload, feedback disconnection and overheating)
  • EMI: according to EN55022-Class-B
  • RoHS compliant





Description バージョン サイズ
DB1822 DB1822: Wide-range single-output demonstration board based on the VIPER26HN 1.0 804 KB
Description バージョン サイズ
AN4165 AN4165: STEVAL-ISA111V1: 12 V / 12 W, 115 kHz non-isolated flyback 2.0 2 MB


Bill of Materials
Description バージョン サイズ
Schematic Pack
Description バージョン サイズ
STEVAL-ISA111V1 schematics 1.0 103 KB


Description バージョン サイズ
Evaluation products license agreement 1.4 128 KB
サポート & コミュニティ

サンプル & 購入

製品型番 Core Product Marketing Status Unit Price (US$) * 数量 ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISA111V1 VIPER26HN Active 106 1 NEC EAR99 ITALY MORE INFO No availability reported, please contact our Sales office

(*) 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

品質 & 信頼性

製品型番 Marketing Status パッケージ Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA111V1 アクティブCARDIndustrialEcopack2

(**) The Material Declaration forms available on st.com 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.