TIDA-01451

Power Switching Reference Design for Set Top Box

TIDA-01451

Design files

Overview

The TIDA-01451 reference design’s functionality emulates the power distribution of Set Top Boxes. By using integrated load switches to control power rails, each rail can be turned on or off depending on the needs and wants of the user. Turning off rails that are not being used reduces power loss and facilitates meeting energy compliance standards, such as Energy Star. An eFuse placed at the input can manage Hot Plug transients and protect downstream DC/DC converters from an input voltage that is too high or too low, reducing end equipment return rate.

Features
  • A fully featured power tree for common loads in STB allows for appropriate selection of load switches and DC/DCs in system design
  • Current limiting on the HDMI port provides necessary protection for the 5V rail
  • Switching unused loads off results in higher system efficiency and a lower standby current for meeting requirements such as EnergyStar
  • Load switches offer a smaller solution size and lower component count when compared to a discrete MOSFET solution

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.

TIDUD88.PDF (14772 K)

Reference design overview and verified performance test data

TIDRSH8.PDF (395 K)

Detailed schematic diagram for design layout and components

TIDRSH9.PDF (178 K)

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

TIDRSI0.PDF (79 K)

Detailed overview of design layout for component placement

TIDRSI2.ZIP (1993 K)

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

TIDCDS6.ZIP (617 K)

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

TIDRSI1.PDF (889 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

eFuses & hot swap controllers

TPS25952.7-V to 18-V, 34mΩ, 0.5-4A eFuse with over voltage protection in small WSON package

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS5622014.5 V to 17 V input, 2 A output, synchronous step-down converter in Eco-mode

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS5642014.5 V to 17 V input, 4 A output, synchronous step-down converter in Eco-mode

Data sheet: PDF | HTML
Current sense amplifiers analog output

INA21226V, bi-directional, high-precision current sense amplifier

Data sheet: PDF | HTML
Current sense amplifiers analog output

INA21526V, bi-directional, high-precision current sense amplifier

Data sheet: PDF | HTML
Load switches

TPS229185.5-V, 2-A, 52-mΩ load switch with adj. rise time and adj. output discharge

Data sheet: PDF | HTML
Load switches

TPS229455.5-V, 0.1-A, 500-mΩ, load switch with current limit, active high enable, and blanking

Data sheet: PDF | HTML
Load switches

TPS229762-ch, 5.7-V, 6-A, 14-mΩ, load switch with adj. rise time and optional output discharge

Data sheet: PDF | HTML
USB power switches & charging port controllers

TPS2065D1A loading, 4.5-5.5V, 96mΩ USB power switch, active-high, output discharge, reverse blocking

Data sheet: PDF | HTML

Start development

Software

Support software

TIDA-01451_Software — TIDCDS7.ZIP (704 K)

Technical documentation

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Type Title Date
* Design guide Power Switching Reference Design for Set-Top Box Aug. 18, 2017

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