Automotive Single-port USB Charging featuring LM43603 and TPS2543 Reference Design


Design files


Compact design for automotive single-port USB charging featuring the new synchronous 36V, 3A LM43603 SIMPLE SWITCHER and the TPS2543 USB Switch and Controller. LM2904 is used to provide cable droop compensation.

  • 8V to 36V input voltage range for load dump protection
  • 5V, 3A output to USB port for tablet and mobile phone charging
  • Cable Droop Compensation
  • TPS2543-Q1, LM2904-Q1 available on
  • This is a tested sub-system design with test report and schematics
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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.

TIDU349.PDF (393 K)

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

TIDR628.PDF (154 K)

Detailed schematic diagram for design layout and components

TIDR629.PDF (114 K)

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

TIDR630.PDF (66 K)

Detailed overview of design layout for component placement

TIDC600.ZIP (185 K)

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


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

LM436033.5V to 36V, 3A Synchronous Step-Down Voltage Converter

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

LM43603-Q1Automotive Qualified 3.5V to 36V, 3A Synchronous Step-Down Voltage Converter

Data sheet: PDF | HTML
General-purpose op amps

LM2904-Q1Automotive-grade, dual, 26-V, 700-kHz operational amplifier

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

TPS2543-Q1Automotive USB charging port power switch & controller

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
More literature SIMPLE SWITCHER Synchronous Regulator Series (Rev. B) Feb. 08, 2016
Test report PMP9080 Test Results May 13, 2014

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