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iW1761

iW1761

PrimAccurate™ High-Performance N-Channel MOSFET Digital PWM Controller for Power Adapters

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Selectable cable drop compensation

The iW1761 is a high performance AC/DC controller designed to drive an external power N-channel MOSFET for peak current mode PWM flyback power supplies. Optimized for output power between 10W-12W, the iW1761 is ideal for power adapters in portable electronics such as smart phones and media tablets.

IW1761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10MW，同时符合主动模式效率要求。作为一个PrimAccurate™controller, the iW1761 does not need any direct secondary-side feedback components, eliminating the need for optocouplers, reducing component count and solution cost. Additional features include Dialog's proprietaryEZ-EMI™technology, adaptive multi-mode PWM/PFM control for optimal efficiency across all loads, 5 selectable cable and connector voltage drop compensation voltages, robust operation with full protection from over-voltage and over-temperature.

特征

  • 轻松符合DOE外部电源和欧盟行为准则，版本5，第2层标准
    • 小于10MW无负荷功耗
  • 主动启动可降低导通时间而不会影响空载功耗
  • Optimized for Output Power Range of 10W to 12W
  • Ultra-low 300uA Operating Current at No-Load
  • 89kHz PWM Switching Frequency
  • Selectable Voltage Offset Compensation for Voltage Loss in Cables and Connectors (5 Options)
    • Selectable via single resistor to ground

特征

  • PrimAccurate™ - 初级侧控制，不需要光电耦合器
  • 内在低噪声解决方案 - 整个操作范围内没有可听噪声
  • 自适应多模PWM / PFM控制，用于跨负载范围的最佳效率
  • EZ-EMI™设计可轻松满足全球EMI规范
  • 快速动态负载调整率
  • Fully Protected from Fault Conditions
    • 过电压/过温保护
    • Output Over-Voltage and Over-Current
    • 输入欠压保护
    • Sense-Resistor Short Circuit Protection

雷竞技安卓下载

  • 智能手机和媒体片剂的电源适配器
  • 用于消费电子产品的AC / DC适配器
  • Optimized for Universal Input AC/DC Adapters (10W-12W)

Block Diagrams

典型的应用程序图雷竞技安卓下载
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Functional Block Diagram

Resources

产品简介和摘要
Date 版
IW1761产品简报 28/06/2012 Rev. 0.6
白皮书和技术文章
Date 版
什么是数字电力白皮书

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