iW1822

Excellent Cross Regulation and No Optocoupler Needed Optimizes System Cost

AccuSwitch™ digital PWM controller integrates a highly accurate control circuit with a 900V BJT power switch to provide a complete solution for off-line power conversion at up to 18W of output power.

Dialog’s PrimAccurate™ primary-side digital control algorithms eliminate the need for failure-prone optocouplers and ensures excellent cross-regulation accuracy, to enable the longer operating lifetime, high performance and reduced cost required for industrial applications and appliances.

The output is designed to smoothly start-up into large capacitors, while maintaining a quick turn-on time. It operates in quasi-resonant mode to optimize efficiency and incorporates a low-power mode that achieves <30mW of no-load power consumption to meet global energy efficiency regulations.

18W Output

AccuSwitch™ integrated 900V 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 (up to 6,000µF)

EZ-EMI™Design

• Reduces Filtering Requirements
• Easily Meets Global EMI Specifications

Fully Protected from Fault Conditions

• Built-In Over-Temperature Protection
• Output Over-Voltage and Over-Current Protection
• Sense-Resistor Short Circuit Protection
• Thermally Efficient SO-10 Batwing Package

Smart Electricity Meters

Industrial Applications