Automotive 2.4A Dual-Port USB Hub Reference Design With Short-to-Battery Protection


Design files


The TIDA-00887 is comprised of a two-port USB 2.0 hub with short-to-battery (STB) and short-circuit protection on both downstream ports provided by the TPD3S716-Q1. Both downstream ports are configured either as a custom divider mode or a dedicated charging port (DCP) provided by the TUSB4020BI-Q1 USB 2.0 hub if no upstream device is connected.  When an upstream is connected, the TUSB4020 hub supports charging via CDP. The ports automatically switch between divider mode, CDP mode, and DCP mode depending on the portable devices connected, in order to provide the fastest charging rate to the connected device.

This reference design is similar to the TIDA-00845, however, it removes the in-system STB simulator and adds functionality for 2.4-A charging and automatic charge detection.

  • Fully functional USB hub with short-to-battery (STB) protection and BC 1.2 charge detection
  • Supports USB 2.0 high-speed data rates
  • Adjustable overcurrent protection current limit up to 2.4 A
  • IEC 61000-4-2 (Level 4) and ISO 10605 system-level ESD protection on VBUS_CON, DP/DM
  • STB protection (up to 18 V) on VBUS_CON, VD+, VD-
  • Short-to-ground protection on VBUS_CON for both downstream ports
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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.

TIDUC78.PDF (993 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRPK7.ZIP (1894 K)

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

TIDCD38.ZIP (503 K)

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

TIDRPK6.PDF (1818 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Application-specific port protection ICs

TPD3S716-Q1Automotive USB 0.5-A to 2.4-A adjustable current limit and VBUS/D+/D- short-to-VBATT protection

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

LMR14050-Q1SIMPLE SWITCHER® Automotive 40V, 5A, 2.2MHz Step-Down Converter with 40uA IQ

Data sheet: PDF | HTML
ESD protection diodes

TPD2E2U06-Q1Automotive Dual 1.5-pF, 5.5-V, ±25-kV ESD protection diode for USB & High Speed Interfaces

Data sheet: PDF | HTML
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
USB hubs & controllers

TUSB4020BI-Q1Automotive Two-Port High-Speed 480Mbps USB 2.0 Hub

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Automotive Dual-Port 2.4 A USB Hub Reference Design With Short-to-Battery Dec. 16, 2016

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