100-W, High-Resolution, 16-bit Color-Tunable, 0.15% Dimmable RGBW LED Luminaire Reference Design

(ACTIVE) TIDA-01415

Description & Features

Technical Documents

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Key Document

Description

This reference design demonstrates the finest range of color control of individual RGBW LED strings with > 16 bits of PWM resolution while supporting the PWM modulation frequencies as high as 30 and 50 kHz. This reference design demonstrates the finest range of individual RGBW LED strings color control and enables development of highly efficient DC-DC LED luminaires capable of wide color gamut generation with trillions of colors while at the same time being imperceptible to high-end cameras and video broadcast equipment.

Features
  • Four buck current controllers driving RGBW LED strings at 30V and string current of up to 0.75A (also tested up to 1.25A)
  • LED buck current controllers efficiency exceeding 96% at full load with maximum operating frequency up-to 600 kHz
  • 100% to 0.2% Contrast setting for PWM dimming method at 30 and 50 kHz
  • 100% to 0.15% Contrast setting and better Linearity for Shunt dimming mode at 30 and 50 kHz
  • High-resolution PWM feature of C2000™ with 180-ps step enables current adjustment with resolution > 16 bits for both PWM and Shunt FET methods even at 50kHz dimming frequency
  • 4Ch, 12bit DAC used for IADJ setting of individual LED strings to enable analog dimming

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD19538Q2  100V, 49mOhm SON2x2 NexFET Power MOSFET  MOSFETs  Sample & Buy Not Available
DAC7564  12-Bit, Quad Channel, Ultra-Low Glitch, Voltage Output DAC with 2.5V, 2ppm/°C Internal Reference  Digital-to-analog converters (DACs)  Sample & Buy View Design Kits & Evaluation Modules
LM3409  PFET Buck Controller for High Power LED Drives  LED drivers  Sample & Buy View Design Kits & Evaluation Modules
LM5165  3V-65V, 150mA Synchronous Buck Converter With Ultra-Low IQ  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMR16006  SIMPLE SWITCHER® 4V to 60V, 600mA Step-Down Regulator with Low Iq  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LP5907  250mA Ultra-Low-Noise Low-Iq Low-Dropout (LDO) Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TMS320F28027  Piccolo™ 32-bit MCU with 60 MHz, 64 KB Flash  C2000 real-time control MCUs  Sample & Buy View Design Kits & Evaluation Modules
UCC27511  4A/8A Single Channel High-speed Low-side Gate Driver  Gate Drivers  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD19538Q2 WSON (DQK)| 6 Download Download
DAC7564 Download Download
LM3409 Download Download
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LM5165 Download Download
LMR16006 Download Download
LP5907 Download Download
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TMS320F28027 Download -
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UCC27511 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 7908 06 Jun 2017 11
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 336 02 Jun 2017 1 1
ZIP 2371 02 Jun 2017 1 1
PDF 1781 02 Jun 2017 7
PDF 375 02 Jun 2017 2
PDF 102 02 Jun 2017 3
PDF 615 02 Jun 2017 12
Related Tools & Software

Design Kits & Evaluation Modules  ( 1 )

Name Part Number Tool Type
C2000 Piccolo MCU F28027 LaunchPad Development Kit  LAUNCHXL-F28027  Development Kits 

Software (1)



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