High Efficiency Tunable White LED DC-DC Driver with Bluetooth Smart Connectivity Reference Design


Design files


This reference design is a tested DC/DC LED driver designed for tunable white LED luminaires. It is built on a wireless SoC platform which can enable intensity adjustment (dimming) and co-related color temperature (CCT) control using any BLE smart device. Tunable white-light luminaires simulate daylight conditions. With a separate warm-white and cold-white LED string, it allows CCT tuning and helps achieve proper circadian stimulation. TIDA-01096 provides high efficiency DC/DC conversion and allows dimming and color temperature control over more than 1:50 and 1:500 range using analog and PWM methods.

  • 98% efficiency over 100% to 50% brightness with analog dimming; 1:50 contrast ratio with analog dimming and 1:500 with PWM dimming
  • PWM-based dimming with modulation frequency support up to 5 kHz
  • Two 600-kHz constant current buck drivers with features to synchronize switching frequencies
  • Ambient light sensor OPT3001-based light measurement enabling daylight harvesting and constant lumen implementations in software
  • Overcurrent and over-temperature protection for driver and LED module

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRME7.PDF (1402 K)

Files used for 3D models or 2D drawings of IC components

TIDRME8.ZIP (2611 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Ambient light sensors

OPT3001Digital ambient light sensor (ALS) with high-precision human-eye response

Data sheet document-pdfAcrobat PDF open-in-new HTML
Analog temperature sensors

LMT841.5V-Capable, 10 uA Analog Output Temperature Sensor in SC70 and TO-92

Data sheet document-pdfAcrobat PDF open-in-new HTML
Bluetooth products

CC2650SimpleLink™ 32-bit Arm Cortex-M3 multiprotocol 2.4 GHz wireless MCU with 128kB Flash

Data sheet document-pdfAcrobat PDF open-in-new HTML
Illumination LED drivers

TPS92513HV65-V 1.5-A analog current adjustable buck LED driver

Data sheet document-pdfAcrobat PDF open-in-new HTML
Precision op amps (Vos<1mV)

OPA376Precision (0.025mV), low noise (7.5nV/rtHz), low quiescent current (760uA) op amp

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide BLE Connected Dimmable Tunable White LED Light Circadian Lighting Design Guide (Rev. A) Jul. 18, 2016

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