-60 V inverting buck-boost reference design


Design files


This tiny reference design delivers -60-V output voltage from an input voltage around 5 V typically generated by an automotive pre regulator. The controller in that circuit is LM5161-Q1 providing two internal MOSFETs. Overall, this converter is used as auxiliary supply for LIDAR applications. 

  • Capability to drive up to 40-mA peak for pulsed applications
  • Temperature rise less than +30K at full load
  • Load regulation 30 mV means only 0.05% output voltage deviation
  • No switch node ringing results in low radiated emissions
  • Output voltage ripple only around 100 mVpp to supply sensitive load
Output voltage options PMP30603.1
Vin (Min) (V) 4.5
Vin (Max) (V) 5.5
Vout (Nom) (V) -60
Iout (Max) (A) .02
Output Power (W) 1.2
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck Boost- Integrated Switch^Buck Boost- Inverting^Buck Boost- Synchronous
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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.

TIDT091.PDF (979 K)

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

TIDRZ60.PDF (81 K)

Detailed schematic diagram for design layout and components

TIDRZ61.PDF (135 K)

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

TIDRZ62.PDF (61 K)

Detailed overview of design layout for component placement

TIDRZ64.ZIP (322 K)

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


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

TIDRZ63.PDF (298 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)

LM5161-Q1Wide Input 4.5-V to 100-V, 1-A Synchronous Buck / Fly-Buck Converter

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report -60 V Inverting buck-boost reference design Mar. 04, 2019

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