Synchronous inverting buck-boost converter with adjustable negative-output voltage reference design


Design files


This reference design uses a synchronous-buck regulator with internal top and bottom FETs which is configured as a synchronous-inverting buck-boost converter to provide an adjustable output between -0.2 V and -0.6 V capable of delivering a maximum 15 A of current to the load. The output voltage is adjusted by either an external-PWM signal or analog-voltage signal.

  • Adjustable output from -0.2 VOUT to -0.6 VOUT
  • Regulator includes integrated FETs
  • Small size
  • Very low-output voltage ripple
  • Output voltage adjustable using either PWM signal or analog voltage
Output voltage options PMP22194.1
Vin (Min) (V) 10.8
Vin (Max) (V) 13.2
Vout (Nom) (V) -.2
Iout (Max) (A) 15
Output Power (W) 3
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck Boost- Inverting
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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.

TIDT236.PDF (1341 K)

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

TIDMA53.PDF (269 K)

Detailed schematic diagram for design layout and components

TIDMA54.PDF (198 K)

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

TIDMA55.PDF (218 K)

Detailed overview of design layout for component placement

TIDMA57.ZIP (1944 K)

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

TIDCG49.ZIP (563 K)

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

TIDMA56.PDF (791 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)

TPS543B204-V to 19-V, 25-A synchronous SWIFT™ buck converter with adaptive internal compensation

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report Sync. Inverting Buck-Boost Conv. Ref. Design W/ Adjustable Neg. Output Voltage PDF | HTML Mar. 17, 2021

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