IW1677.

IW1677.

PrimAccurate™在SOT-23封装中的离线数字PWM控制器

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< 20mW standby power

The iW1677 is a high performance AC/DC controller designed to drive a low-cost BJT power switch in peak current mode PWM flyback power supplies up to 5W. Ideal for power adapters for smartphones, the iW1677 integrates Dialog’sprimAccurate™数字初级侧控制,消除了次级侧光耦合器的需求,降低了组件计数和解决方案成本。

IW1677集成了一个主动启动电路,允许快速接通而不会影响操作电流消耗。该器件易于满足美国DOE的外部电源标准和欧盟的行为准则,第5版,第2层标准,无负载功耗小于20mW。其他功能包括对话框的专有EZ-EMI™technology, quasi-resonant control for optimal efficiency at heavy loads, cable and connector voltage drop compensation options, full protection from fault conditions and tiny packaging.

Features

  • 符合外部电源的拟议强制性联邦效率标准1
  • Intrinsically Low Noise Solution - No Audible Noise Over Entire Operating Range
  • Easily Meets Energy-Star® AC/DC Power Supply Efficiency Specs (Rev 2.0)
    • Less than 20mW No-Load Power Consumption
  • Low 1.7uA Start-Up Current
  • Active Start-Up Circuit to Reduce Turn-on Time
  • 72kHz PWM Switching Frequency
  • Voltage Offset Compensation for Voltage Loss in Cables and Connectors (4 Options)

Features

  • PrimAccurate™ - 初级侧控制,无需光耦合器
  • Quasi-resonant Control for Optimal Efficiency
  • EZ-EMI™ Design to Easily Meet Global EMI Specifications
  • 快速动态负载调节
  • 完全免受故障条件的影响
    • 过温保护
    • 输出过电压和过电流
    • Input Undervoltage Protection
    • 感测电阻短路保护

雷竞技安卓下载

  • 电源适配器的便携式Electronics
  • 消费电子电源
  • 线性AC / DC电源更换

框图

Typical applications diagram
,
功能块Dirgram.

资源

数据表
日期 Version
IW1677.Datasheet 03/06/2016 2.0
White Papers & Technical Articles
日期 Version
What is Digital Power White Paper

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