Two-switch buck-boost converter with 28.0V @ 2.5A and an input voltage range of 10..32V


Design files


This design is a two-switch buck boost converter which generates an output voltage of 28.0V @ 2.5A from an input voltage range of 10..32V.

Output voltage options PMP8570.1
Vin (Min) (V) 10
Vin (Max) (V) 32
Vout (Nom) (V) 28
Iout (Max) (A) 2.5
Output Power (W) 70
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck Boost- 2 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.

SNVU346.PDF (1412 K)

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

SNVR339.PDF (95 K)

Detailed schematic diagram for design layout and components

SNVR340.PDF (32 K)

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


Includes TI products in the design and potential alternatives.

Buck-boost & inverting controllers (external switch)

LM251183-42V Wide Vin, Current Mode Non-Synchronous Buck-Boost Controller

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP8570 Test Results Sep. 19, 2013

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