The iW1830 AccuSwitch™ digital PWM converter integrates a highly accurate control circuit with a 700V power MOSFET to provide a complete solution for off-line power conversion at up to 15W 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 white goods applications.

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 <50mW of no-load power consumption to meet global energy efficiency regulations. Additional features include full protection from over-temperature, overvoltage and overcurrent conditions as well as EZ-EMI® technology to meet global EMI specifications.

A DiaSIM™ simulation model is available for the iW1830. For more information and where to download, please visit the DiaSIM™ page.


  • 12W – 15W Output Power
  • 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
    • < 50mW No-Load Power Consumption
    • Quasi-resonant Control for Optimal Efficiency
  • Adaptively Controlled Soft Start-up
    • Fast, Smooth Start-up Into Large Capacitive Loads
  • EZ-EMI™ Design to Meet Global EMI Specifications
  • Fully Protected from Fault Conditions:
    • Over-Temperature Protection
    • Output Overvoltage and Overcurrent
    • Sense-Resistor Short Circuit Protection Application
  • Thermally Efficient PDIP-7 Package to Support High Power





Type Title Date
Product Brief PDF 604 KB
Datasheet PDF 984 KB
Brochure PDF 5.51 MB 日本語
Other ZIP 3.33 MB
White Paper PDF 766 KB
White Paper PDF 279 KB
Other ZIP 3.13 MB
Other ZIP 2.10 MB
Other ZIP 2.34 MB
Other ZIP 3.02 MB
Other ZIP 2.27 MB
Manual - Development Tools PDF 3.96 MB
12 items

Design & Development

Software & Tools

Software & Tools

Software title
Software type
DiaSIM™ Simulation Models
DiaSIM simulation models let the user test and validate AC/DC power supply designs prior to prototyping.
Simulator Renesas
1 item



Type Title Date
Model - Other ZIP 715 KB
Model - Other ZIP 334 KB
2 items