Revolutionary Single-Chip Combines Triac Wall Dimmer And Digital Dimming


Dialog Semiconductor announced a revolutionary single chip which combines digital control (I2C) with TRIAC dimming, to enable Smart LED luminaires to dim concurrently using wireless digital commands as well as traditional TRIAC wall dimmers. This dual-dim technology, the company claims, allows for a wide dimming range from 1% to 100% without flicker or shimmer, providing a high quality of light for applications up to 25W.

The driver IC works with any wireless protocol including Bluetooth, Wi-Fi and ZigBee. For wireless smart dimming, a Dialog’s SmartBond DA14580 BLE chip is available which requires a minimum number of external components and the lowest system bill of materials (BOM).

“The iW3690 enables digital link dimming and remote on/off at any AC phase conduction angle. It employs resonant control and features 0.95 power factor (PF), less than 20 per cent total harmonic distortion (THD) and 85 per cent typical efficiency, comfortably meeting DesignLights Consortium (DLC) requirements. The device automatically protects against over-temperature conditions, LED open and short circuits, AC line over-voltage, and output over-current”, noted Dialog in the Press release.


“The iW3690 driver IC bridges the gap between traditional wall dimmers and the latest digital solutions for smart lighting is forecast to be worth 58 billion USD annually by 2020”, says Dialog.

“Until now, designers were forced to compromise on legacy dimmer control in order to provide users with digital smart lighting control. Combining support for legacy analog dimmers with a digital interface in a single unifying IC offers designers of LED luminaires the most cost-effective and easy-to-implement control solution for smart lighting,” said Davin Lee, Senior Vice President and General Manager of Dialog’s Power Conversion Business Group.

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The company is sampling iW3690 now and plans to make available production quantities this quarter.

For further details, view the full Press release.



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