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24W PrimAccurate™ High Power N-Channel MOSFET Digital PWM Controller for Networking Adapters


Very fast dynamic load response

The iW1767 offers high-performance and very fast dynamic load response (DLR) while maintaining ultra-low no-load power consumption. Ideal for 15-24W AC/DC power supplies for embedded and networking applications, the iW1767 uses Dialog’s advanced digital power supply technology to offer a solution that provides the ruggedness, efficiency and performance necessary in high reliability devices.

The iW1767 easily meets the US DoE’s external power 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 a PrimAccurate™ controller, it does not need any direct secondary-side feedback components, eliminating the need for optocouplers and reducing component count and solution cost. Additional features include an input for the iW628 detection circuit to further increase the response time to load changes, high efficiency across a broad load range and a full complement of protection features to ensure safe and rugged operation.

Lifecycle status

● Active


Meets Energy-Star® AC-DC and AC-AC Power Supply Efficiency Specs (Rev 2.0)

  • Less than 20mW No-Load Power Consumption

Optional Secondary-Side Detection Input to Obtain Fast Dynamic Load Response (DLR)

High Output Power Capable - Range of 15W to 24W

Active Start-Up - Reduces Turn-on Time without Impacting No-load Power Consumption

Ultra-low 250uA Operating Current at No-Load

79kHz PWM Switching Frequency

Selectable Voltage Offset Compensation for Voltage Loss in Cables and Connectors (5 Options)

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

Fully Protected from Fault Conditions

  • Over-Voltage/Over-Temperature Protection
  • Output Over-Voltage and Over-Current
  • Input Undervoltage Protection
  • Sense-Resistor Short Circuit Protection


Power Adapters for Networking Devices and Monitors

Universal Input Power Supplies (15W-24W)

Block Diagrams


Typical applications diagram


Functional block diagram

To order a sample of any of our products, please complete the following form. We will provide up to five parts free of charge. Our sales department will provide pricing for samples orders exceeding five parts.

Sample Request Form

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Product Briefs and Summaries
Name Date Version
iW1767 Product Brief (357.54 KB) 28/06/2013 0.4
White Papers & Technical Articles
Name Date Version
What is Digital Power White Paper (597.24 KB)