Overview

AccuSwitch™ digital PWM controller integrates a highly accurate control circuit with a 900V bipolar junction transistor (BJT) power switch to provide a complete solution for off-line power conversion at up to 18W of output power.

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

The output is designed to smoothly start-up into large capacitors while maintaining a quick turn-on time. It operates in quasi-resonant mode to optimize efficiency and incorporates a low power mode that achieves <30mW of no-load power consumption to meet global energy efficiency regulations.

iW1822 Functional Block Diagram
iW1822 Typical Applications Diagram
iW1822 Functional Block Diagram
iW1822 Typical Applications Diagram
  • 18W Output
  • AccuSwitch™ Integrated 900V Power BJT
  • PrimAccurate™ Primary-Side Control
    • No Optocoupler Needed
  • Intelligent Digital Control Loop for Accurate Voltage Cross-Regulation
  • Meets Global Energy Efficiency Standards
    • <30mW No-Load Power Consumption
  • 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

Applications

  • Smart Electricity Meters
  • Industrial Applications

Documentation

= Featured Documentation
Type Title Date
Datasheet
iW1822 Datasheet
Log in to Download PDF 1.31 MB
Product Brief
iW1822 Product Summary
PDF 479 KB
Other
Reference Design EBC10234: iW1822-00 Thee-Phase Input Voltage, 12V/1A Output Design
Log in to Download ZIP 2.89 MB
3 items

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
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    Part Number
    IW1822-00
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    		SO-10 Batwing Tape & Reel 1 0.7868 Get Samples,
    iW1822-01
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    Samples Available
    		 SO-10 Batwing 1 Get Samples,
    iW1822-11
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    Samples Available
    		 SO-10 Batwing 1 Get Samples,
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