The iW1699B improves on the performance of Renesas' iW1699 AC/DC controller by reducing the output voltage ripple to 1% on a 12V output voltage, increasing the Vcc input voltage range up to 25V, and increasing robustness with extra protection features.

The iW1699B easily meets the US DoE’s external power supply efficiency standard and the EU’s Code of Conduct, Version 5, Tier 2 external power supply standard, with no-load power consumption less than 30mW while complying with minimum active mode efficiency requirements.

The iW1699B also incorporates Renesas' SmartDefender™ smart hiccup technology to help address soft short circuits in cables and connectors.

The iW1699B is pin-to-pin and backward compatible with the iW1699.

A DiaSIM™ simulation model is available for the iW1699B. For more information and where to download, please visit the DiaSIM™ Simulation Models page.


  • Low output ripple voltage – 120mV on a 12V or 5V output voltage
  • 25V max Vcc input voltage range
  • Easily meets DoE external power supply and EU CoC Version 5, Tier 2 standards
    • Less than 30mW no-load power consumption
  • Active start-up reduces start-up time without increasing no-load power consumption
  • Selectable voltage offset compensation for voltage loss in cables and connectors (5 options)
    • Selectable via single resistor to ground
  • PrimAccurate™- Primary-side control, no optocoupler needed
  • Intrinsically low noise solution - No audible noise over entire operating range
  • Adaptive multi-mode PWM/PFM control for optimal efficiency across load range
  • EZ-EMI™ design to easily meet global EMI specifications
  • Fast dynamic load response (DLR)
  • SmartDefender™ Smart Hiccup Technology
    • Helps address soft-shorts in cables, connectors without latching off
    • Helps protect cables and connectors from excessive heat and damage by reducing average power during short circuit by at least 50%
  • Fully protected from fault conditions
    • Overvoltage/Over-temperature protection (latch option)
    • On-chip internal over-temperature protection
    • Output over-voltage and Overcurrent protection
    • Input undervoltage protection
    • Sense-resistor short circuit protection
    • Bulk input capacitor discharge circuit
  • Pin-to-pin and backward compatible with iW1699





Type Title Date
Product Brief PDF 513 KB
Brochure PDF 8.73 MB
Brochure PDF 5.49 MB 日本語
Datasheet Log in to Download PDF 994 KB
Other Log in to Download ZIP 2.52 MB
Other Log in to Download ZIP 2.44 MB
White Paper Log in to Download PDF 279 KB
Manual - Development Tools PDF 3.96 MB
8 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