TIDA-00845

Two-Port Automotive USB 2.0 Hub With Short-to-Battery Protection Reference Design

TIDA-00845

Design files

Overview

TIDA-00845 is a dual-port USB 2.0 hub with the ability to withstand a short of up to 18-V DC on both downstream ports, as well as Level 4 IEC 61000-4-2 ESD protection, overcurrent conditions, and shorts to ground. This protection is provided by an integrated protection device - the TPD3S714-Q1. With short-to-battery (STB) protection, short-circuit protection, and a fixed current-limit load switch on both downstream ports, the TUSB4020BI USB 2.0 hub is isolated and protected from overvoltage and overcurrent conditions. Downstream port 1 includes a STB test simulator for applying 18-V DC, and two TPD3S714-Q1s to protect both the hub and a peripheral for easily demonstrating USB STB protection functionality.

Features
  • Fully functional USB hub with built-in short-to-battery test simulator on downstream port 1
  • Short-to-battery protection (up to 18 V) on VBUS, DP/DM
  • Overcurrent protection current limit: 550 mA
  • IEC 61000-4-2 (Level 4) system-level ESD protection at VBUS, DP/DM
  • Short-to-ground protection on VBUS
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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.

TIDUBT7A.PDF (2599 KB)

Reference design overview and verified performance test data

TIDUBG7A.PDF (10045 KB)

Reference design overview and verified performance test data

TIDRLT5.PDF (270 KB)

Detailed overview of design layout for component placement

TIDRLT3.PDF (92 KB)

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

TIDRLT6.ZIP (10587 KB)

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

TIDCC70.ZIP (8977 KB)

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

TIDRLT4.PDF (2272 KB)

PCB layer plot file used for generating PCB design layout

TIDRLT2.PDF (909 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Linear & low-dropout (LDO) regulators

TPS748011.5-A low-VIN (0.8 V) adjustable low-dropout (LDO) voltage regulator with power good and enable

Data sheet: PDF | HTML
Noninverting buffers & drivers

SN74LVC1G125Single 1.65-V to 5.5-V buffer with 3-state outputs

Data sheet: PDF | HTML
ESD protection diodes

TPD1E05U060.5-pF, 5.5-V, ±12-kV ESD protection diode in 0402 package for High Speed Interfaces

Data sheet: PDF | HTML
USB hubs & controllers

TUSB4020BITwo-Port High-Speed 480Mbps USB 2.0 Hub

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

LMR14030SIMPLE SWITCHER® 40-V, 3.5-A, 2.2-MHz step-down converter with 40-uA IQ

Data sheet: PDF | HTML
USB port protection ICs

TPD3S714-Q1Automotive USB 0.55-A fixed current limit and  VBUS/D+/D- short-to-VBATT protection

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Touch Remote Control Reference Design With CapTIvate Technology (Rev. A) Dec 6, 2016
* Design guide Two-Port Automotive USB 2.0 Hub With Short-to-Battery Protection Design Guide (Rev. A) May 23, 2016

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