ST Life.augmented


Wide range single-output demonstration board based on the VIPER37LE
  • active Active

The STEVAL-ISA121V1 demonstration board implements a 15 W single-output wide range mains power supply to be used as an auxiliary adapter in applications such as LCD, plasma or LED TVs, desktop computers, etc., when the main power supply is OFF or in standby mode and the auxiliary power supply must provide energy only to some specific parts of the equipment such as USB ports, remote receiver, etc.

The board uses the new VIPER37LE, an offline high voltage converter from the VIPerPlus family, specifically designed for fixed frequency flyback converters, which combines a high-performance low voltage PWM controller chip and a max. 4.5 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 EPA 2.0 limits, thereby helping to meet the most stringent energy-saving requirements.

The board implements several protection features that considerably increase end-product safety and reliability: overload protection, overvoltage protection, brownout protection, hysteretic thermal protection, shorted secondary rectifier detection, and transformer saturation protection, all of which are in auto-restart mode.

pdf データシート
Data Brief

Key Features

  • Universal input mains range:
  • input voltage 90 - 264 VAC
  • frequency 45 - 65 Hz
  • Single-output voltage: 5 V @ 3 A continuous operation
  • Standby mains consumption:< 30 mW @ 230 VAC
  • Average efficiency: > 75%
  • Complies with EuP Lot 6 requirements
  • Fully protected against faults overload, overvoltage, transformer saturation and overheating
  • Compliant with EMC norm EN55022-Class-B
  • RoHS compilant




Technical Documentation

Product Specifications

Description Version Size
DB1850: Wide range single-output demonstration board based on the VIPER37LE
1.0 271 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISA121V1 gerber files
1.0 253 KB

Bill of Materials

Description Version Size
1.0 50 KB

Schematic Pack

Description Version Size
STEVAL-ISA121V1 schematics
1.0 129 KB

License Agreement

Description Version Size
Evaluation products license agreement
1.0 126 KB

サンプル& 購入

製品型名 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA121V1ActiveVIPER37LEBuy Direct126.17Distributor reported inventory date: 2015-05-29
Distributor NameRegionStockMin. order

(*)ユニット当たりの推奨再販価格(米ドル建て)は、あくまで予算的な参考情報としてご利用下さい。現地通貨ベースでのお見積り、価格については 弊社セールスオフィス もしくは 販売代理店 にお問合せ下さい。
(**)弊社ホームページで入手できるMaterial Declaration(材料宣誓書)のフォームは、各パッケージ・タイプで最も一般的に使用されるパッケージに基づいた包括的な文書です。そのため、特定のデバイスについて100%正確ではない可能性があります。特定のデバイスに関する情報については、 弊社セールスオフィス にお問合せ下さい。
Feedback Form
Customer Feedback