ST Life.augmented

STEVAL-ISA126V1

5 V-2 A, 115 kHz flyback with temporary extra-power management based on the VIPER28HN
  • active Active

The STEVAL-ISA126V1 is a 5 V-2 A application with 3.3 A peak current capability for 1.9 sec, using VIPer28H, a new off-line high voltage converter from STMicroelectronics.

In some applications an SMPS, normally supposed to deliver a certain amount of power, from time to time undergoes load peaks that can be even two or more times as much, but only for a time interval which is short if compared to the thermal time constants of the power components. Typical examples of such loads are printers and audio systems.

In these cases, it is more cost-effective to thermally design the system for the maximum continuous power and not for the peak power demand, which will be sustained only for a limited time window.

Such a design is possible thanks to the EPT function of VIPER28H, which allows the designer to fix the maximum time window during which the converter is able to manage the peak power still maintaining output voltage regulation. If the overload lasts more than this time window, the converter is automatically shut down in auto-restart mode, in order to avoid the damaging of the power components.

pdf データシート
Data Brief

Key Features

  • Input voltage range: 90 VRMS to 265 VRMS
  • Output voltage: 5 V
  • Max output current: IOUTmax 2 A
  • Peak output current: IOUTpk 3 A
  • Precision of output regulation: ΔVOUT_LF ±5%
  • High frequency output voltage ripple: ΔVOUT_HF 50 mV
  • Max ambient operating temperature: TA 60 ºC
  • 800 V avalanche rugged power section
  • PWM operation , at 115 kHz with frequency jittering for lower EMI
  • Limiting current with adjustable set point
  • On-board soft-start
  • Safe auto-restart after a fault condition, low standby power (< 50 mW at 265 Vac)
  • Adjustable and accurate over voltage protection, thermal shutdown with hysteresis, delayed overload protection
  • RoHS compliant

画像

デザイン・リソース

トップ

Technical Documentation

Product Specifications

Description Version Size
pdf
DB2091: 5 V-2 A, 115 kHz flyback with temporary extra-power management based on the VIPER28HN
1.0 155 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
zip
STEVAL-ISA126V1 gerber files
485 KB

Bill of Materials

Description Version Size
pdf
STEVAL-ISA126V1 BOM
119 KB

Schematic Pack

Description Version Size
pdf
STEVAL-ISA126V1 schematics
86 KB

サンプル& 購入

トップ
製品型名 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA126V1ActiveVIPER28Buy Direct69.82Distributor reported inventory date: 2014-09-01
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE31
MOUSEROrder NowWORLDWIDE21
Ecopack2-

(*)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