Reference Design - TPS54623 Synchronous Buck Converter with Vin=4.5V-17V, Vout=3.3V, Iout=5A


Design files


This synchronous buck converter design uses the TPS54623 to generate a 3.3V at 5A rail from a 4.5V-17Vdc source.  The current mode control and  high switching frequency of the device minimize the component count and size, resulting in a simple design. This supply achieves a peak efficiency of 96%.

  • Skips pulses to boost the efficiency at light loads
  • Low component count and size reduces total footprint of design
  • Peak efficiency of 96%
  • Full design, layout, and test report
Output voltage options PMP10774.1
Vin (Min) (V) 4.5
Vin (Max) (V) 17
Vout (Nom) (V) 3.3
Iout (Max) (A) 5
Output Power (W) 16.5
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous

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.

TIDU744.PDF (573 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

TIDC881.ZIP (1076 K)

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


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS546234.5-V to 17-V, 6-A synchronous SWIFT™ buck converter with light load efficiency

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Test report PMP10774 Test Results Jan. 16, 2015

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