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STEVAL-ISA126V1

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

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.

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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

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图案 资源

顶部

Technical Documentation

Product Specifications

描述 版本 大小
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

描述 版本 大小
zip
STEVAL-ISA126V1 gerber files
485 KB

Bill of Materials

描述 版本 大小
pdf
STEVAL-ISA126V1 BOM
119 KB

Schematic Pack

描述 版本 大小
pdf
STEVAL-ISA126V1 schematics
86 KB

样品 & 购买

顶部
产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA126V1ActiveVIPER28Buy Direct69.82Distributor reported inventory date: 2014-10-25
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE31
MOUSEROrder NowWORLDWIDE21
Ecopack2-

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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