Power & Power Management

Overview

The iW1699 is a high-performance AC/DC controller designed to drive an external power N-channel MOSFET for peak current mode PWM flyback power supplies. It uses Renesas' PrimAccurate™ primary-side control technology, eliminating the need for a secondary-side regulator and optocoupler, reducing component count and solution cost while easily meeting 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.

It integrates a constant current mode on some options so it can be used in adapter applications, with a constant current accuracy >3%. Additional features include Renesas' proprietary EZ-EMI™ technology, adaptive multi-mode PWM/PFM control for optimal efficiency across all loads, five selectable cable and connector voltage drop compensation voltages, and robust operation with full protection from overvoltage and over-temperature.

For lower output ripple, see the iW1699B 30W AC/DC off-line controller page.

iW1699 Functional Block Diagram
iW1699 Typical Applications Diagram
iW1699 Functional Block Diagram
iW1699 Typical Applications Diagram
  • Meets DoE external power supply regulation and EU CoC Version 5, Tier 2
    • Less than 30mW no-load power consumption
  • Active start-up - Reduces turn-on time without impacting no-load power consumption
  • Low 6µA start-up current
  • 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 regulation
  • Fully protected from fault conditions
    • Overvoltage/Over-temperature protection (latch option)
    • Output overvoltage and overcurrent
    • Input undervoltage protection
    • Sense-resistor short circuit protection

Applications

  • Power adapters for portable electronics
  • Consumer electronics power supplies
  • Linear AC/DC power supply replacement

Documentation

Title
Type 		Date
iW1699 Product Summary
PDF 466 KB 		Product Brief
Industrial Power Management Brochure
PDF 5.51 MB 日本語 		Brochure
iW1699 Datasheet
PDF 1021 KB 		Datasheet
Reference Design EBC10022: iW1699-03 5V/2A, 90-264VAC, 30mW No-Load Mini Travel Adapter Design
ZIP 2.44 MB 		Other
Reference Design EBC10024: iW1699-03 5V/2.4A, 90-264VAC, 30mW No-Load, High Efficiency Travel Adapter Design
ZIP 3.19 MB 		Other
Reference Design EBC10046: iW1699-03 5V/2.5A, 90-264VAC, 30mW No-Load, Low Cost Travel Adapter Design
ZIP 2.59 MB 		Other
Reference Design EBC10065: iW1699-05 and iW671-00, 5.2V/2.4A, 90-264VAC, 75mW No-Load, Low Output Ripple Travel Adapter Design
ZIP 1.81 MB 		Other
What is Digital Power White Paper
PDF 597 KB 		White Paper
8 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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Product Options

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    iW1699-01
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    iW1699-02
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    iW1699-05
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