Power Switching Reference Design for Set Top Box
TIDA-01451
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Key Document

Description

This 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

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Design Files

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TI Devices (9)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA212  26V, Bi-Directional, Zero-Drift, Low-/High-Side, Voltage Output Current Sense Amplifier  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
INA215  26V, Bi-Directional, Zero-Drift, Low-/High-Side, Voltage Output Current Sense Amplifier  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TPS2065D  Single Channel, Current-Limited USB Power Distribution Switch  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS22918  5.5V, 2A, 52mΩ load switch with adjustable rise time and adjustable quick output discharge  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS22945  5.5V, 0.2A, 500mΩ, 100mA Current Limit Load Switch  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS22976  5.5V, 6A, 14mΩ, dual load switch with adj. rise time & optional QOD  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS2595  2.7V to 18V, 4A, 34mΩ eFuse with fast overvoltage protection  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS562201  4.5 V to 17 V input, 2 A output, synchronous step-down converter in Eco-mode  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS564201  4.5 V to 17 V input, 4 A output, synchronous step-down converter in Eco-mode  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA212 Download Download
Download
INA215 Download Download
Download
TPS2065D Download Download
TPS22918 Download
TPS22945 Download Download
TPS22976 Download -
TPS2595 Download Download
TPS562201 Download Download
TPS564201 Download Download

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (2)
Title Type Size (KB) Date
PDF 14772 18 Aug 2017
PDF 2823 07 Apr 2017
Design files (6)
Title Type Size (KB) Date
ZIP 617 30 Aug 2017
ZIP 1993 30 Aug 2017
PDF 889 30 Aug 2017
PDF 79 30 Aug 2017
PDF 178 30 Aug 2017
PDF 395 30 Aug 2017
Related Tools & Software

Design Kits & Evaluation Modules  ( 1 )

Name Part Number Tool Type
MSP430F5529 USB LaunchPad Evaluation Kit  MSP-EXP430F5529LP  Evaluation Modules & Boards 

Software (1)



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