The digital addressable lighting interface (DALI) is becoming more and more popular for home and building lighting applications. The standard enables simple wiring and options to change configurations. The latest DALI 2.0 standard allows users to control up to 65 individual lights and/or 32 groups of lights. Complex color light scenes of multiple luminaires can now easily be set up through DALI. For this reference design, energy efficiency LEDs are used, often arranged in stripes. For ambient lighting, RGB is preferred, but for general lighting, warm/cold white light is needed.
Renesas offers a highly integrated, complete solution for driving five LED stripes for red, green, blue, and warm/cold white lights, with up to 70V and 700mA each, resulting in 245W of total LED power. The 70V are internally boosted out of the 24VDC input.
Renesas’ Synergy S128 microcontroller (MCU) already contains a dedicated peripheral for DALI 2.0, so the total BOM is further reduced. Renesas also provides a best-in-class power solution to run the system out of the standard 24VDC.
||Buy / Sample|
32 MHz Arm® Cortex®-M0+ CPU
|Renesas Synergy™ Platform MCUs||Buy / Sample|
Bluetooth® Low Energy Microcontrollers for Smart Connectivity
|RL78 Low Power 8 & 16-bit MCUs||Buy / Sample|
3V to 40V Input, 1.2A Synchronous Buck Regulator with Integrated 500mA LDO
|General Parts||Buy / Sample|
4-Channel LED Driver with Phase Shift Control and 10-Bit Dimming Resolution
|LED Backlight Drivers||Buy / Sample|
4-PIN LSOP Photocoupler OPERATING AMBIENT TEMPERATURE 115°C
|DC Input Single||Buy / Sample|
±15kV ESD Protected, 3.3V, Full Fail-Safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers
|RS-485/422 with Enhanced ESD Protection||Buy / Sample|