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特性

  • 25W Output
  • AccuSwitch™ Integrated 700V Power MOSFET
  • PrimAccurate™ Primary-Side Control
    • No Optocoupler Needed
  • Intelligent Digital Control Loop for Accurate Voltage Cross-Regulation
  • Meets Global Energy Efficiency Standards
  • Configurable Light Load Mode to Optimize No-Load Power Consumption and DLR
    • <30mW to <75mW No-Load Power Consumption
  • Works with the iW676 SR Controller with Active Voltage Positioning (AVP)
    • AVP – Enables <30mW No-Load Power Consumption and Fast DLR
  • Quasi-resonant Control for Optimal Efficiency
  • Adaptively Controlled Soft Start-up
    • Fast, Smooth Start-up into Large Capacitive Loads (up to 6,000µF)
  • EZ-EMI™ Design
    • Reduces Filtering Requirements
    • Easily Meets Global EMI Specifications
  • Fully Protected from Fault Conditions
    • Built-In Over-Temperature Protection
    • Output Overvoltage and Overcurrent Protection
    • Sense-Resistor Short Circuit Protection
    • Thermally Efficient SO-10 Batwing Package

描述

The iW1825 AccuSwitch™ digital PWM controller integrates a highly accurate control circuit with a 700V power MOSFET switch to provide a complete solution for off-line power conversion at up to 25W of output power.

Renesas' PrimAccurate™ primary-side digital control algorithms eliminate the need for failure-prone optocouplers and ensure excellent cross-regulation accuracy for multiple output designs, to enable the longer operating lifetime, high performance and reduced cost required for embedded, networking and home appliance applications.

The iW1825 has a configurable light load mode operation to enable optimization between no-load standby power and fast DLR. It can achieve <75mW at no load, with the fastest DLR setting and <30mW in the lowest setting. The iW676 synchronous rectifier controller with active voltage positioning can be used with the iW1825 to enable the lowest no-load standby power, fastest DLR and highest efficiency for 25W applications.

产品参数

属性
Topology Characteristic Flyback
Control Mode Primary-Side Regulation Peak Current Mode DCM
UVLO Rising (V) 13.7
UVLO Falling (V) 6.4
VBIAS (Max) (V) 18
PWMs (#) 1
Output Power Max (W) 25
Switching Frequency (KHz) 79 - 79
No Load Power (mW) 75
Controller / Integrated Integrated
Advanced Features AccuSwitch, EZ-EMI, PrimAccurate, SmartDefender, Optional Input OVP Feature
Temp. Range (°C) -40 to +125°C
Qualification Level Standard

封装选项

Pkg. Type Lead Count (#) Pitch (mm)
SO-10 Batwing 10
SO-10 Batwing 10 1.27

应用方框图

MIDI Linked Illumination Controller Block Diagram
MIDI 链接照明控制器
由 MCU 驱动的系统可解读 MIDI 以控制 LED,从而创造出与音乐同步的照明效果。
1.2kW High-Voltage Inverter with GaN-based Power Factor Correction (PFC) Block Diagram
1.2kW 高压 GaN 逆变器
采用了基于 GaN 的 PFC 的高效高压 GaN 逆变器,适用于工业电机驱动。
Heat Pump Control System Block Diagram
热泵控制系统
该热泵系统具有电机控制 MCU、PLC 和 Wi-Fi 连接功能,可实现最佳性能。
Smart Water Purifier System Block Diagram
智能净水器系统
具备紫外线过滤、智能提醒和高效电源管理功能的高级水净化系统。
High Throughput Wi-Fi 6 Router Block Diagram
高吞吐率 Wi-Fi 6 路由器
使用由瑞萨电子提供支持的高级 Wi-Fi 6 路由器,体验丝滑、高速的连接。

其他应用

  • Home Appliances
  • Power Adapters
  • Networking Power Supplies

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