Synchronous Inverting Buck Converter Application - Reference Design


Design files


PMP9380 reference design is a Synchronous Inverting Buck Converter using the LM46002 Synchronous Buck Regulator IC. The design accepts an input voltage of 18Vin to 42Vin and provides an output of -15V capable of supplying a maximum current of 0.5A to the load.  This design was built on a 4-layer board (1 oz. copper on top and bottom layers and 0.5 oz. copper on two inner layers). Tests in this report were performed at 18Vin, 30Vin, and 42Vin.

  • Vin 18V to 42V
  • 4 layer board (1 oz. copper on top and bottom, 0.5 oz. on middle two layers)
  • Board dimensions: 3.2” x 1.6”
  • Good thermal performance and efficiency
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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.

SNVU415.PDF (1152 K)

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

SNVR426.PDF (125 K)

Detailed schematic diagram for design layout and components

SNVR427.PDF (103 K)

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


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

TIDC872.ZIP (118 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)

LM460023.5V to 60V, 2A Synchronous Step-Down Voltage Converter

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP9380 Test Results Jan. 14, 2015

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