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AccuSwitch™ Off-Line Digital PWM Converter with 800V Bipolar Power Transistor in Thermally Efficient P-DIP7


64kHz integrated BJT optimized for 12Vout, 7W output

The iW1815 is an AccuSwitch™ digital PWM controller that simplifies design and lowers cost in power supplies.  The iW1815 integrates a highly accurate control circuit with an 800V-rated BJT power switch.  The output is optimized for a 12V output voltage at loads up to 7W and is designed to start up into large output capacitors (6,000µF).  It operates in a quasi-resonant mode to optimize efficiency and also incorporates a low-power mode that achieves <30mW no-load power consumption, easily meeting global energy efficiency standards, ideal for applications such as energy-standard compliant home appliances.

Dialog's PrimAccurate™ primary-side digital control algorithms enable a fully isolated solution without the need for an optocoupler, reducing cost and solution size while improving reliability. Additional functionality includes full protection from over-temperature, over-voltage and over-current conditions as well as EZ-EMI® technology to easily meet global EMI specifications.

Lifecycle status

● Active


1W – 7W Output Power

AccuSwitch™ - Integrated 800V Power BJT

PrimAccurate™ Primary-Side Control

  • No Optocoupler Needed

Intelligent Digital Control Loop for Accurate Voltage Cross-Regulation

Meets Global Energy Efficiency Standards

  • < 30mW No-Load Power Consumption
  • Quasi-resonant Control for Optimal Efficiency

Adaptively Controlled Soft Start-up

  • Fast, Smooth Start-up Into Large Capacitive Loads

Optimized for 12VOUT and large COUT

EZ-EMI™ Design to Easily Meet Global EMI Specifications

Fully Protected from Fault Conditions:

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

Thermally Efficient PDIP-7 Package to Support High Power


Smart Meters

Motor Control

Networking Devices

Home Automation and Appliances

Networking Devices

Industrial Appliances

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
iW1815 Product Summary (348.6 KB) 21/04/2015 0.1
Name Date Version
iW1815 Datasheet (823.42 KB) (Registered users only) 19/11/2015 0.2
White Papers & Technical Articles
Name Date Version
White Goods Power Supply Design White Paper (921.42 KB) (Registered users only) 01/05/2016 1.0