Automotive USB Charging Port Supply Reference Design with Charging Controller and Cable Compensation
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now

See the Important Notice and Disclaimer covering reference designs and other TI resources.


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

See the Important Notice and Disclaimer covering reference designs and other TI resources.


Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Test Data

Get results faster with test and simulation data that's been verified.

Download Test Data

Design Files

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

Download Design Files

(Output Voltage 1)
Vin (Min) (V)5
Vin (Max) (V)40
Vout (Nom) (V)5
Iout (Max) (A)2.5
Output Power (W)12.5
Input TypeDC
TopologyBuck- Synchronous

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS2549-Q1  Automotive USB Charge port controller with droop compensation  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS62130A-Q1  TPS62130A-Q1 3 to 17-V 3-A Automotive Step-Down Converter in 3 × 3 QFN Package  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS2549-Q1 Download Download
TPS62130A-Q1 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guide (1)
Title Type Size (KB) Date
PDF 165 19 Jan 2016
Design files (4)
Title Type Size (KB) Date
ZIP 102 19 Jan 2016
PDF 297 19 Jan 2016
PDF 13 19 Jan 2016
PDF 40 19 Jan 2016

Support & training

TI E2E™ forums with technical support from TI engineers

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective 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 visit our Support page.

Technical articles