Overview

The iW1812 is a high-performance AC/DC converter with an integrated 800V power bipolar junction transistor (BJT). Capable of 5W output power, the iW1812 operates in a quasi-resonant mode to optimize efficiency and it also incorporates a low power mode that enables less than 30mW of power consumption at no load, meeting global energy efficiency standards and making it ideal for applications such as energy standard compliant home appliances.

The iW1812 also incorporates Renesas' PrimAccurate™ primary-side digital control algorithms that enable a fully isolated solution without the need for an optocoupler, reducing cost and solution size while greatly improving reliability. Additional functionality includes full protection from over-temperature, overvoltage, and overcurrent conditions as well as EZ-EMI™ design techniques to allow for a solution that easily meets global EMI specifications.

iW1812 Functional Block Diagram
iW1812 Typical Applications Diagram
iW1812 Functional Block Diagram
iW1812 Typical Applications Diagram
  • AccuSwitch™ - Integrated 800V BJT
  • 5W output power range capable
  • Easily meets Energy Star® AC/DC power supply efficiency specs (Rev. 2.0)
    • Less than 30mW no-load power consumption
  • Ultra-low 1.7µA start-up current
  • PrimAccurate™ - Primary-side control, no optocoupler needed
  • Quasi-resonant control for optimal efficiency
  • EZ-EMI® design to easily meet global EMI specifications
  • 64kHz PWM switching frequency
  • Fully protected from fault conditions
    • Output overvoltage and overcurrent
    • Input undervoltage protection
    • Sense-resistor short circuit protection
    • Over-temperature protection

Applications

  • Smart meters
  • Motor control
  • Industrial power supplies
  • Home automation and appliances

Documentation

= Featured Documentation
Type Title Date
Datasheet
iW1812 Datasheet
PDF 1.15 MB
White Paper
What is Digital Power White Paper
PDF 597 KB
2 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.

Explore ECAD Models
Diagram of ECAD Models

Product Options

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    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
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    Part Number
    iW1812-20
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    Samples Available
    		 SOIC-7 Tape & Reel 1 Get Samples,
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