30-W power for automotive dual USB Type-C™ charge port reference design


Design files


This reference design employs an LM61460-Q1 synchronous buck regulator that provides a total of 6 A of current to two TPS2557-Q1 load switch channels to provide 30W of total power to dual USB Type-C charge ports. The system is designed for high power efficiency and thermal performance and comes in a small solution size. The design has a switching frequency of 400 kHz and is intended for use in automotive infotainment applications.

  • 12-V battery input, 5-V output with full load of 6-A
  • Peak system efficiency of 95%
  • Compact solution size of 24 mm x 20 mm (480 mm2)
  • 3-A precision current limiting for each channel using TPS2557-Q1 switches
Output voltage options PMP21771.1 PMP21771.2
Vin (Min) (V) 12 12
Vin (Max) (V) 12 12
Vout (Nom) (V) 5 5
Iout (Max) (A) 3 3
Output Power (W) 15 15
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Buck- Synchronous Buck- Synchronous

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.

TIDT117.PDF (2113 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

TIDRX80.PDF (76 K)

Detailed overview of design layout for component placement

TIDRX78.ZIP (689 K)

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


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

TIDRX82.PDF (551 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

LM61460-Q1Automotive 3-V to 36-V, 6-A, low-noise synchronous step-down converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
USB power switches & charging port controllers

TPS2557-Q1Automotive 0.5A - 5A, adjustable ILIMIT, 2.5-6.5V, active-high enable power switch, 22 mOhm

Data sheet document-pdfAcrobat PDF

Technical documentation

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Type Title Date
Test report 30 W Power for Automotive Dual USB Type-C™ Charge Port Reference Design Jun. 28, 2019

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