iW350

iW350

Highly Programmable 3-in-1 Secondary-Side Signal Interface Controller with Optimized Output Drive

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Supports 0-10V Analog, PWM, Resistor Dimming

The iW350 is a secondary-side PWM signal generator that works with three types of dimming inputs: PWM dimming, 0-10V linear dimming, or simple dimming using a single resistor to ground from the DIM pin. With its extensive configurability, the iW350 offers programmable maximum dimming voltage, minimum duty cycle, turn-off function and PWM output frequency range, making the device highly flexible for dimmable commercial SSL lighting applications.

The iW350 converts any of the compatible dimming signals into a 1%–100% PWM duty cycle output that provides a dimming signal to a primary-side LED driver such as the iW3636, eliminating the need for transformers or other driver circuitry.

Features

  • Operating Range: 15V to 60V
  • Programmable Maximum Dimming Voltage
  • Programmable Minimum Duty Cycle and Turn-off
  • Programmable PWM Frequency Output
  • 3-in-1 Dimmer Interface
    • 0-10V Analog
    • PWM (10V)
    • Resistor

Features

  • Highly Integrated for Low BOM Cost
    • Integrated Current Source for Driving 0-10V Dimmers
    • Integrated Optocoupler Driver for Isolated Applications
  • Output Drive Optimized for Optocoupler Non-Linear Delay Time
  • 1% PWM Duty Cycle Tolerance
  • Shutdown Pin to Minimize Standby Power

Applications

  • 0-10V Analog Dimming
  • PWM LED Dimming
  • Resistor LED Dimming

Block Diagrams

Typical applications diagram
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Functional block diagram

Resources

Product Briefs and Summaries
Date Version
iW350 Product Summary 02/03/2020 Rev. 0.4

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