CISPR 25 Class 5, 2.1-MHz rated, 15-W automotive USB Type-C® charger reference design


Design files


This reference design is an EMI-optimized design for automotive USB Type-C® charger with 15-W output. TPS25855-Q1 is used as a DC/DC regulator and port controller. The switching frequency is set to 2.1 MHz. The front-end filter is designed and the PCB layout is optimized to pass stringent CISPR 25 Class-5 conducted Electromagnetic Interference (EMI) standards. This reference design has been tested to CISPR 25 Class 5 conducted EMI standards, which accelerates customer design time.

  • Passes stringent CISPR 25 Class 5 conducted electromagnetic interference (EMI) standards
  • 93.3% peak efficiency with 2.1 MHz frequency
  • USB Type-C charger
Output voltage options PMP40939.1
Vin (Min) (V) 6
Vin (Max) (V) 26
Vout (Nom) (V) 5.17
Iout (Max) (A) 3
Output Power (W) 15.51
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology USB Switch
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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.

TIDT185.PDF (1153 K)

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

TIDMA09.PDF (301 K)

Detailed schematic diagram for design layout and components

TIDMA10.PDF (149 K)

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

TIDMA11.PDF (264 K)

Detailed overview of design layout for component placement

TIDMA13.ZIP (2202 K)

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

TIDCG40.ZIP (645 K)

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

TIDMA12.PDF (971 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

TPS25854-Q1Single 3-A USB Type-C® charging ports controller with load shedding

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

TPS25855-Q1Single 3-A USB Type-C® charging ports controller with load shedding, 2.2 MHz

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report CISPR 25 Class 5, 2.1-MHz Rated, 15-W Automotive USB Type-C® Charger Ref. Design PDF | HTML Jan. 26, 2022

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