TIDA-01364

Smart Backlight Control by White LED Driver, Ambient Light, and Proximity Sensor Reference Design

TIDA-01364

Design files

Overview

This reference design conserves power and extends LCD backlight life by dynamically adjusting the LCD backlight brightness relative to the environment's ambient light levels. A capacitive proximity sensor saves power and increases LCD backlight life by waking up the system from sleep or standby mode when a person approaches.

Features
  • Demonstrates EMI-resistant proximity detection using copper PCB material
  • Human eye spectral response matching with strong infrared (IR) rejection (<1%)
  • Dynamically adjusts backlight brightness on logarithmic scale based on how the human eye perceives brightness
  • Even LED illumination controlled through white-LED driver PWM without calibration
  • Integrated backlight UV filter enables good performance in outdoor applications
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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.

TIDUCG5.PDF (8629 KB)

Reference design overview and verified performance test data

TIDROW3.PDF (255 KB)

Detailed overview of design layout for component placement

TIDROW2.PDF (131 KB)

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

TIDROW5.ZIP (1083 KB)

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

TIDCCY1.ZIP (1769 KB)

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

TIDROW4.PDF (1812 KB)

PCB layer plot file used for generating PCB design layout

TIDROW1.PDF (890 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Signal conditioners

FDC22122-Ch, 28-bit, capacitance to digital converter

Data sheet: PDF | HTML
ESD protection diodes

TPD2E2U06Dual 1.5-pF, 5.5-V, ±25-kV ESD protection diode with 5.5-A 8/20-uS surge rating for USB 2.0

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV713P150-mA, capacitor-free low-dropout voltage regulator with active output discharge & enable

Data sheet: PDF | HTML
Humidity sensors

HDC1010±2% low-power digital humidity and temperature sensor in WCSP

Data sheet: PDF | HTML
Light sensors

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

Data sheet: PDF | HTML
Backlight LED drivers

TPS61165High brightness white LED driver in 2mm x 2mm QFN Package

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430FR596916 MHz MCU with 64KB FRAM, 2KB SRAM, AES, 12-bit ADC, comparator, DMA, UART/SPI/I2C, timer

Data sheet: PDF | HTML

Start development

Software

Support software

TIDCCY2 — TIDA01364_ALS Software

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-01364 Smart Backlight Control by White LED Driver, Ambient Light, and Proximity Sensor Reference Design
Download options

TIDCCY2 TIDA01364_ALS Software

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Latest version
Version: 01.00.00.00
Release date: Dec 4, 2016
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Hardware development
Reference design
TIDA-01364 Smart Backlight Control by White LED Driver, Ambient Light, and Proximity Sensor Reference Design

Release Information

The design resource accessed as www.ti.com/lit/zip/tidccy2 or www.ti.com/lit/xx/tidccy2/tidccy2.zip has been migrated to a new user experience at www.ti.com/tool/download/TIDCCY2. Please update any bookmarks accordingly.

Technical documentation

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* Design guide Smart Backlight Control by White LED Driver, Ambient Light, and Proximity Sensor Nov 22, 2016

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-00373 Backlight and Smart Lighting Control by Ambient Light and Proximity Sensor Reference Design TIDA-00754 Smart lighting & backlight control by ambient light & noise-immune proximity sensor reference design

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