Non-Isolated Buck Using TPS54140A with Input 24 to 30 VDC 5V@1.25A Reference Design


Design files


The PMP8716 (5V@1.25A) reference design is a 7W DC/DC Buck which uses a TPS54140A. It can generate a Non-Isolated 5 volt output at 1.25 Amps from an input a 24 to 30 Volts DC. This design has multiple outputs.

Output voltage options PMP8716.1
Vin (Min) (V) 24
Vin (Max) (V) 30
Vout (Nom) (V) 5
Iout (Max) (A) 1.25
Output Power (W) 6.25
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Non Sync

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SLVUA11.PDF (385 K)

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

SLVRB93.PDF (24 K)

Detailed schematic diagram for design layout and components

SLVRB94.PDF (194 K)

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


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

TPS54140A3.5V to 42V Input, 1.5A Step-Down Converter with Eco-Mode

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

Technical documentation

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Type Title Date
Test report PMP8716 Test Results Nov. 20, 2013

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