24V to 12V@4.5A Synchronous Buck Converter Reference Design


Design files


This synchronous buck converter supplies 12V @ 4.5A from a 12.5V to 24V input. This converter was optimized to provide high efficiency in a small footprint for applications such as portable radios.

  • Small area of less than 25mm x 40mm
  • Excellent efficiency (96.5% at 24Vin, 97.2% at 18Vin)
  • Low profile (4mm height)
Output voltage options PMP10902.1
Vin (Min) (V) 12.5
Vin (Max) (V) 24
Vout (Nom) (V) 12
Iout (Max) (A) 4.5
Output Power (W) 54
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology 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.

TIDUCH3.PDF (1918 K)

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

TIDRO73.PDF (134 K)

Detailed schematic diagram for design layout and components

TIDRO74.PDF (108 K)

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

TIDRO75.PDF (56 K)

Detailed overview of design layout for component placement

TIDRO77.ZIP (16689 K)

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


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

TIDRO76.PDF (700 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

TPS401704.5 V to 60 V Wide-Input Synchronous PWM Buck Controller

Data sheet: PDF | HTML
Power blocks

CSD87330Q3D30-V, N channel synchronous buck NexFET™ power MOSFET, SON 3 mm x 3 mm power block, 20 A

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP10902 Test Results Oct. 31, 2016

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