Automotive 15-W USB Type-C™ and 12-W USB Type-A charger reference design


Design files


This reference design is for an automotive USB Type-C and USB Type-A charger in 45-mm×45-mm dimension. The TPS25833-Q1 is used in each port as DC-DC regulator and port controller. The efficiency of the solution is 93.2% at 27-W output, which leads to only 40.8°C temperature rise. In an 85°C environment, the highest temperature on the board is 126.4°C. Programmable cable droop compensation helps portable devices charge at optimum current and voltage under heavy loads. A negative temperature coefficient (NTC) thermistor is implemented for intelligent thermal management to reprogram the output current limit. 

  • Small design size
  • 93.2% efficiency at 27-W output
  • Only 40.8°C temperature rise during full load operation
  • Programmable cable droop compensation for optimum charging
  • Intelligent thermal management
Output voltage options PMP40543.1 PMP40543.2
Vin (Min) (V) 6 6
Vin (Max) (V) 36 36
Vout (Nom) (V) 5 5
Iout (Max) (A) 3 2.4
Output Power (W) 15 12
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Buck- Synchronous Buck- Synchronous
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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.

TIDT130.PDF (2264 K)

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

TIDM146.PDF (226 K)

Detailed schematic diagram for design layout and components

TIDM147.PDF (96 K)

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

TIDM148.PDF (167 K)

Detailed overview of design layout for component placement

TIDM150.ZIP (1468 K)

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

TIDCFL6.ZIP (1374 K)

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

TIDM149.PDF (838 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

USB Type-C & USB Power Delivery ICs

TPS25831-Q1USB Type-C™ DCP Charge port converter with STB protection, cable comp. and thermal foldback

Data sheet: PDF
USB Type-C & USB Power Delivery ICs

TPS25833-Q1USB Type-C,DCP charge port converter with cable compensation and thermal foldback

Data sheet: PDF

Technical documentation

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Type Title Date
* Test report Automotive 15-W USB Type-C™ and 12-W USB Type-A Charger Reference Design Aug. 20, 2019

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