Two-Stage Power Supply Reference Design for Field Transmitters


Design files


This dual output reference design provides an example of how to power FPGAs, ASICs, or MCUs when space-constraints are a primary concern. The wide 6-V to 60-V input voltage range and the use of ultra-small and highly efficient DC/DC converters makes the design well suited for applications like industrial sensors, field transmitters, motor drives, and PLC modules. The two-stage approach provides a 1.5% accurate 5-V rail and a 1.5-V point of load rail with 1% accuracy across the entire temperature range. The output voltages are adjustable and can be adapted to the specific needs of the user.

  • Operates over a wide input voltage from 6 V to 60 V with transient protection up to 66 V
  • Dual Outputs: 5 V at 300 mA, 1.5 V at 1 A
  • Small Solution Size (9.25 mm x 18 mm)
  • Scalable for Industrial Power Supplies 
  • Peak System Efficiency > 90%
Output voltage options PMP15039.1 PMP15039.2
Vin (Min) (V) 6 6
Vin (Max) (V) 60 60
Vout (Nom) (V) 5 1.5
Iout (Max) (A) .3 1
Output Power (W) 1.5 1.5
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Buck- Synchronous Buck- 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.

TIDUDQ1.PDF (1496 K)

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


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRWG4.ZIP (2331 K)

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


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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

LMR360064.2-V to 60-V, 0.6-A ultra-small synchronous step-down converter

Data sheet: PDF | HTML
Buck converters (integrated switch)

LMR360154.2-V to 60-V, 1.5-A ultra-small synchronous step-down converter

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS628212.4-V to 5.5-V input, 1-A step-down converter with 1% accuracy in 1.5-mm x 2-mm VSON-HR package

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report Two-Stage Power Supply Reference Design for Field Transmitters May 23, 2018

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