TIDA-00998

Energy Harvesting and Fault Indicator Subsystem for Overhead Fault Indicators Reference Design

TIDA-00998

Design files

Overview

This reference design shows multiple architectures for extending primary battery life using a secondary battery or supercapacitor with energy harvested from a current transformer (CT) or solar cells. Optimal power management is done using efficient LED drivers to drive series or parallel strings of LEDs to control intensity for uniform 360° visibility.

Features
  • Solar energy harvesting to charge li-ion battery, autoswitching between primary and secondary battery to power LED driver and fault indicator AFE
  • Interface to CT-based load current harvesting subsystem to charge supercapacitor; PowerMux to autoswitch between supercapacitor and primary battery
  • Drives up to six independent LEDs and three channels paralleled to drive high current LED using LP55231
  • Drives series-connected LED strings using LM3509
  • Three-level intensity control based on ambient light sensed using OPT3001

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.

TIDUCL5A.PDF (3713 K)

Reference design overview and verified performance test data

TIDRQK2.PDF (388 K)

Detailed schematic diagram for design layout and components

TIDRQK3.PDF (283 K)

Detailed schematic diagram for design layout and components

TIDRQK4.PDF (98 K)

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

TIDRQK5.PDF (94 K)

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

TIDRQK6.PDF (466 K)

Detailed overview of design layout for component placement

TIDRQK7.PDF (184 K)

Detailed overview of design layout for component placement

TIDRQL0.ZIP (1561 K)

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

TIDRQL1.ZIP (1351 K)

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

TIDCDC2.ZIP (2632 K)

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

TIDCDC3.ZIP (988 K)

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

TIDRQK8.PDF (1252 K)

PCB layer plot file used for generating PCB design layout

TIDRQK9.PDF (747 K)

PCB layer plot file used for generating PCB design layout

Products

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
Backlight LED drivers

LM3509High efficiency boost for white LED's and/or OLED displays with dual current sinks

Data sheet document-pdfAcrobat PDF
Battery charger ICs

BQ25505Ultra low power harvester power management IC with boost charger, and autonomous power multiplexor

Data sheet document-pdfAcrobat PDF open-in-new HTML
Boost converters (integrated switch)

TPS61021A3-A Boost Converter with 0.5-V Ultra Low Input Voltage

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

TLV3492Dual Nanopower Push-Pull Output Comparator

Data sheet document-pdfAcrobat PDF open-in-new HTML
I2C level shifters, buffers & hubs

PCA93062-bit bidirectional 400-kHz I2C/SMBus voltage level translator

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD13202Q212-V, N channel NexFET™ power MOSFET, single SON 2 mm x 2 mm, 9.3 mOhm

Data sheet document-pdfAcrobat PDF open-in-new HTML
P-channel MOSFETs

CSD25310Q2-20-V, P channel NexFET™ power MOSFET, single SON 2 mm x 2 mm, 23.9 mOhm

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

TPS2113A2.8-V to 5.5-V, 84-mΩ, 1.25-A, power mux with automatic switchover and status output

Data sheet document-pdfAcrobat PDF
RGB LED drivers

LP552319 channel RGB / White LED driver with internal program memory and integrated charge Pump - WQFN

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

ATL4312.5-V low-IQ adjustable precision shunt regulator

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

Technical documentation

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Type Title Date
* Design guide Energy Harvesting and Fault Indicator Subsystem Reference Design (Rev. A) May 25, 2017
Application note Designing with the ATL431LI Nov. 27, 2018
Technical article How energy harvesting can extend the life of your fault indicator on the grid Oct. 18, 2017

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