7V to 40V Wide Input, 3-Output SIMPLE SWITCHER® Reference Design Using LMR14050 and LMZ20502


Design files


The reference design shows the wide input voltage capability, simple layout, and small solution size of the LMR14050 SIMPLE SWITCHER® Buck Converter and the LMZ20502 Nano Module. The LMR14050 provides a 5V output rail which feeds into two LMZ20502 Nano Modules.  The modules provide a 3.3V and a 1.8V rail.  The 5V, the 3.3V, and the 1.8V rails are capable of delivering a maximum of 2A load at their respective output voltages.

  • Wide Input Voltage Range
  • Easy to Use
  • Small Solution Size
  • Modular Design
Output voltage options PMP10743.1 PMP10743.2 PMP10743.3
Vin (Min) (V) 7 5 5
Vin (Max) (V) 40 5 5
Vout (Nom) (V) 5 3.3 1.8
Iout (Max) (A) 2 2 2
Output Power (W) 10 6.6 3.6
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC DC
Topology Buck- Non Sync Buck- Synchronous Buck- Synchronous

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.

TIDUAI0.PDF (1563 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


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)

LMR14050SIMPLE SWITCHER® 40-V, 5-A, 2.2-MHz step-down converter with 40-μA IQ

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck modules (integrated inductor)

LMZ205022.7V to 5.5V, 2A High Density Nano Module

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Test report PMP10743 Test Results Aug. 27, 2015

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