High-power density reference design for automotive vehicle-to-everything (V2X) power


Design files


This reference design provides the system rails for automotive vehicle-to-everything power. A 5-V bus is generated by the off-battery buck converter (LM63625-Q1), and this supplies all the point-of-load devices. The bus converter switches at 2.1 MHz, and the load converters (TPS628501-Q1) switch at 2.2 MHz. Easily configurable jumpers allow users to enable and disable each device on the board and toggle the bus converter operational modes. A front-end EMI filter is included.

  • Small solution size measuring 1.20 inches X 1.06 inches
  • All converters operate with an output voltage ripple of less than 2% at full load
  • All switching converters operate above 2 MHz to avoid the AM band
  • Built for easy testability using configurable jumpers and test points
  • Automotive-qualified solution
Output voltage options PMP22648.1 PMP22648.2 PMP22648.3 PMP22648.4 PMP22648.5 PMP22648.6 PMP22648.7
Vin (Min) (V) 6 5 5 5 5 5 5
Vin (Max) (V) 16 5 5 5 5 5 5
Vout (Nom) (V) 5 5 3.3 3.3 1.8 1.35 1.175
Iout (Max) (A) 2.4 2.3 .01 .2 .3 .2 2
Output Power (W) 12 11.5 .033 .66 .54 .27 2.35
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Topology Buck- Synchronous Other Linear Regulator Buck- Synchronous Buck- Synchronous 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.

TIDT205.PDF (7269 K)

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

TIDM807.PDF (297 K)

Detailed schematic diagram for design layout and components

TIDM808.PDF (273 K)

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

TIDM809.PDF (258 K)

Detailed overview of design layout for component placement

TIDM811.ZIP (1276 K)

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


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

TIDM810.PDF (1465 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

LM63625-Q13.5-V to 36-V, 2.5-A step-down voltage converter with spread spectrum

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS628501-Q1Automotive 2.7V-to-6V 1-A step-down converter in SOT-583 package

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV733P-Q1Automotive 300-mA, low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Load switches

TPS22965-Q11-ch, 5.7-V, 4-A, 16-mΩ automotive load switch with adj. rise time and output discharge

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report High-Power Density Reference Design for Automotive Vehicle-to-Everything (V2X) PDF | HTML Feb. 17, 2021

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