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
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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.

TIDUCL5A.PDF (3714 KB)

Reference design overview and verified performance test data

TIDRQK6.PDF (466 KB)

Detailed overview of design layout for component placement

TIDRQK7.PDF (184 KB)

Detailed overview of design layout for component placement

TIDRQK4.PDF (98 KB)

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

TIDRQK5.PDF (95 KB)

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

TIDRQL0.ZIP (1562 KB)

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

TIDRQL1.ZIP (1351 KB)

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

TIDCDC2.ZIP (2632 KB)

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

TIDCDC3.ZIP (989 KB)

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

TIDRQK8.PDF (1252 KB)

PCB layer plot file used for generating PCB design layout

TIDRQK9.PDF (747 KB)

PCB layer plot file used for generating PCB design layout

TIDRQK3.PDF (284 KB)

Detailed schematic diagram for design layout and components

TIDRQK2.PDF (389 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

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

Data sheet: PDF | HTML
Battery charger ICs

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

Data sheet: PDF | 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: PDF
Light sensors

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

Data sheet: PDF | HTML
MOSFETs

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

Data sheet: PDF | HTML
Shunt voltage references

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

Data sheet: PDF | HTML
Comparators

TLV3492Dual Nanopower Push-Pull Output Comparator

Data sheet: PDF | HTML
Backlight LED drivers

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

Data sheet: PDF
MOSFETs

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

Data sheet: PDF | HTML
I2C & I3C level shifters, buffers & hubs

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

Data sheet: PDF | HTML
RGB LED drivers

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

Data sheet: PDF | 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 PDF | HTML Oct 18, 2017

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