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iW1762

iW1762

PrimAccurate™ High-Performance N-Channel MOSFET Digital PWM Controller for Networking Adapters

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Selectable cable drop compensation

The iW1762 is a high performance AC/DC controller designed to drive an external power N-channel MOSFET for peak current mode PWM flyback power supplies. Optimized for power supplies with output power between 15W- 24W, the iW1762 is ideal for power adapters in networking equipment and monitors.

美国能源部iW1762轻松达到的外部鲍威r supply standard and the EU’s Code of Conduct, version 5, tier 2 standard, with no-load power consumption less than 20mW while complying with active mode efficiency requirements. As aPrimAccurate™controller the iW1762 does not need any direct secondary-side feedback components, eliminating the need for optocouplers, reducing component count and solution cost. Additional features include Dialog's proprietaryEZ-EMI™technology, adaptive multi-mode PWM/PFM control for optimal efficiency across all loads, 5 selectable cable and connector voltage drop compensation voltages, robust operation with full protection from over-voltage and over-temperature.

For information on the iW1762 Ultrabook™ solution, see thereference designspage.

Features

  • Meets Proposed Mandatory Federal Efficiency Standards for External Power Supplies1
  • Meets Energy-Star® AC-DC Power Supply Efficiency Specs (Rev 2.0)
    • Less than 50mW No-Load Power Consumption
  • Active Start-Up Reduces Turn-on Time without Impacting No-load Power Consumption
  • Optimized for an Output Power Range of 15W to 24W
  • Ultra-low 300uA Operating Current at No-Load
  • 79kHz PWM Switching Frequency
  • Selectable Voltage Offset Compensation for Voltage Loss in Cables and Connectors (5 Options)
    • Selectable via single resistor to ground

Features

  • PrimAccurate™- Primary-Side Control, No Opto-Coupler 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
    • Over-Voltage/Over-Temperature Protection
    • Output Over-Voltage and Over-Current
    • Input Undervoltage Protection
    • Sense-Resistor Short Circuit Protection

亚博国际官网平台网址

  • Power Adaptors for Network Devices and Monitors
  • AC/DC Power Supplies in Home Electronics
  • Optimized for Universal Input Power Supplies (15W-24W)

Block Diagrams

Typical applications diagram
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Functional block diagram

Resources

Product Briefs and Summaries
Date Version
iW1762 Product Brief 19/06/2012 Rev. 0.6
White Papers & Technical Articles
Date Version
What is Digital Power White Paper

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