Dual-Port Automotive USB Charger Reference Design


Description & Features

Technical Documents

Support & Training

Order Now

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


Using the TPS40170 PWM Buck Controller, this power management reference design provides a regulated 5V to power 2 USB ports at 2.1A each (total 4.2A) in a small form-factor. The design has been optimized for a nominal 12V input and accepts 8-60V.

  • 8 to 60V (12V nominal) input voltage and 5V/4.2A output with TPS40170
  • Form factor complies to UL 2089 and ANSI/SAE J563
  • Meets BC1.2 for DCP with one TPS2511 per port
  • Supports both USB 2.0 and 3.0 power switch requirements
  • TPS2511 USB power switch also offers the data line control to charge many devices
  • This reference design has been lab tested and is supported with design files and an application note


(Output Voltage 1)
Vin (Min) (V)9
Vin (Max) (V)60
Vout (Nom) (V)5
Iout (Max) (A)4.2
Output Power (W)21
Input TypeDC
TopologyBuck- Synchronous
USB Switch
Order Now
Part Number Buy from Texas Instruments or Third Party Buy from authorized distributors Status

Order the full kit of parts to build and utilize this reference design. The kit includes all TI devices, blank PCB, and all related passive and connector content

Not Available


TI's Standard Terms and Conditions for Evaluation Modules apply.

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
TPS2511  USB Dedicated Charging Port Controller and Current Limiting Power Switch  USB Power and Charging Port Controllers  Sample & Buy View Design Kits & Evaluation Modules
TPS40170  4.5 V to 60 V Wide-Input Synchronous PWM Buck Controller  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents
User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 1276 14 May 2012 596
Design files (4)
Title Abstract Type Size (KB) Date Views
ZIP 326 14 May 2012 64
PDF 24 14 May 2012 110
PDF 29 14 May 2012 93
PDF 33 14 May 2012 464

TI E2E™ community

TI E2E Community

As a member ofmy.TI you can join theTI E2E™ Community where you can ask questions, share ideas and collaborate with fellow engineers and TI experts

Contents are provided "AS IS" by the respective TI and Community contributors and do not constitute TI specifications. SeeTerms of use.



Visit the TI Wiki