LED driver offers single chip TRIAC & digital dimming

Posted By : Nat Bowers
LED driver offers single chip TRIAC & digital dimming

For the first time, a single chip solution offers Smart LED luminaires the ability to dim using digital commands, including those sent wirelessly, while working concurrently with traditional TRIAC wall dimmers. Dialog Semiconductor's iW3690 revolutionary driver IC for LED smart lighting combines digital control (I2C) with the company's advanced phase-cut TRIAC dimming technology.

Suitable for applications up to 25W, the IC’s Dual-Dim technology enables dimming from 100% to 1% without flicker or shimmer. The driver IC works with any wireless protocol including Bluetooth, WiFi and ZigBee. Optimal wireless connectivity is made cost effective and easy using Dialog’s SmartBond DA14580 BLE SoC to create a high-performance wireless smart dimming platform with the minimum number of external components and the lowest system 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 PF, less than 20% THD and 85% 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.

Davin Lee, Senior Vice President and General Manager, Power Conversion Business Group, Dialog Semiconductor, commented: “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 analogue 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. Combining our leadership position in innovative LED driver ICs and Bluetooth low energy SoCs enables Dialog to provide optimal interfacing and best-in-class standby power; an important factor given that smart lighting must be always-on in order to receive wireless commands.”

The iW3690 is sampling now and will be available in production quantities this quarter.

Dialog’s Dual-Dim controllers and Bluetooth solutions are being demonstrated at 2016 Lightfair International, 26th to 28th April at the San Diego Convention Center, California, USA.


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