Automotive USB Charging Port Supply Reference Design with Charging Controller and Cable Compensation


Design files


This reference design includes a power management circuit which is capable of controlling a remote USB charging port in an automotive application environment. The circuit can be supplied directly from the car battery rail. It uses a small and highly efficient step down converter, the TPS62130A-Q1, to regulate the required USB bus voltage for charging with charge currents up to 2.5A.

The USB charging port is controlled and protected by using a USB charging controller, the TPS2549-Q1, this charging controller is also used to monitor the charge current for adjusting the output voltage of the TPS62130A-Q1. This way the voltage drop across the cable connection to the USB port is compensated. In addition, the TPS2549-Q1 generates all required signals to indicate a USB charging port to the equipment connected to the port.


  • Complete power solution for a remote USB charging port
  • Input overvoltage protection for surge voltages up to 40V
  • Supports charge currents up to 2.5A
  • Integrated cable voltage drop compensation for 1% accurate load regulation
  • Up to 92% efficiency at full output power
  • Less than 450-mm² PCB area required for the complete solution

Output voltage options PMP9765.1
Vin (Min) (V) 5
Vin (Max) (V) 40
Vout (Nom) (V) 5
Iout (Max) (A) 2.5
Output Power (W) 12.5
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous
?? View video with transcript Video

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.


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


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)

TPS62130A-Q1TPS62130A-Q1 3 to 17-V 3-A Automotive Step-Down Converter in 3 × 3 QFN Package

Data sheet: PDF
USB power switches & charging port controllers

TPS2549-Q1Automotive USB Charge port controller with droop compensation

Data sheet: PDF | HTML

Technical documentation

No results found. Please clear your search and try again.
View all 2
Type Title Date
Technical article A complete power solution for automotive USB ports PDF | HTML Apr. 12, 2016
Test report PMP9765 Test Results Jan. 19, 2016

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​