USB Type-A to USB Type-C SS (SuperSpeed) MUX with DFP controller reference design


Design files


This addapter converts a USB standard host type-A port to Type-C DFP (downstream-facing port) with support for default, 1.5 A and 3.0A VBUS current levels. The TUSB2522 simplifies the design by integrating 2:1 USB 3.1 (up to 10 Gbps) mux with a DFP controller to monitor the Type-C configuration channel (CC) pins to determine plug orientation for mux selection and device attachment for controlling VCONN and VBUS power switches.

  • Plug and Play design
  • The Reference Design operates off of the 5-V VBUS input from the legacy Type A USB connection
  • The Reference Design can provide VCONN over a CC pin based upon Type C plug orientation and Ra detection
  • DIP switch is provided to configure CC for different Type C current mode operations
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUA91.PDF (1059 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


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


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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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

TPS620821.2A High Efficient Step Down Converter in 2x2mm SON Package. 3.3 Vout (Min)

Data sheet: PDF | HTML
ESD protection diodes

TPD4E05U06Quad 0.5-pF, 5.5-V, ±12-kV ESD protection diode for USB, HDMI & High Speed Interfaces

Data sheet: PDF | HTML
ESD protection diodes

TPD6E05U066 channel 0.5-pF, 5.5-V, ±12-kV ESD protection diode for USB, HDMI & High Speed Interfaces

Data sheet: PDF | HTML
USB hubs & controllers

HD3SS252210Gbps USB 3.1 Type-C MUX with DFP Controller

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

TPS2046B2-ch, 0.25A loading, 2.7-5.5V, 70mΩ USB power switch, active-low

Data sheet: PDF
eFuses & hot swap controllers

TPS259102.9-V to 20-V, 30mΩ, 0.8-6.5A eFuse

Data sheet: PDF

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Evaluation board

3220DFP-DGLEVM — HD3SS3220 Type-C Down Facing Port Controller With SuperSpeed 2:1 MUX Evaluation Module

The HD3SS3220 DFP Dongle EVM is designed to evaluate HD3SS3220 devices for DFP implementations.  This EVM can also be used as a hardware reference design for any implementation using the HD3SS3220 with a USB-C connector.
User guide: PDF
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Technical documentation

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* Test report TIDA-00624 Test Procedure Jun. 30, 2015

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