Compact Size Dual 2.5A USB Car Charger Reference Design


Design files


PMP9402 is a dual USB car charger. This design utilizes the LM3150, TPS2561 Dual Channel Power Switch and a TPS2513 USB Dedicated Charging Port Controller. This design operates from 6 to 40V in. The output is set to 5V; both channels have a 2.5A current limit. This design has a switching frequency of 300 kHz. This design is intended for after-market automotive applications.

  • Dual USB charger complete system design, 12.5W output each
  • 2.5A current limit protection for each channel by TPS2561 power switch
  • Compact solution size: 990mm²
  • Wide Vin range 6V to 40V, suitable for 12V car battery input
  • Constant On-Time controller, no loop compensation required, fast transient response
Output voltage options PMP9402.1
Vin (Min) (V) 6
Vin (Max) (V) 40
Vout (Nom) (V) 5
Iout (Max) (A) 5
Output Power (W) 25
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.

TIDU979.PDF (1536 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


Detailed overview of design layout for component placement


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


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.

Buck controllers (external switch)

LM31506V to 42V Synchronous Step-Down Controller with Adjustable Output Voltage

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

TPS2513Dual USB Dedicated Charging Port Controllers

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

TPS25612-ch, 0.25-2.8A adjustable ILIMIT, 2.5-6.5V, 44mΩ USB power switch, active-high

Data sheet: PDF | HTML

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report PMP9402 Test Results May 07, 2015

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. ​​​​​​​​