Uniquely Efficient Isolated DC/DC Converter for Ultra-Low Power and Low Power Apps Reference Design


Design files


This reference design is an isolated DC/DC converter turn-key design that delives high efficiency up to 85% from ultra-low power up to 60 mW. Open-loop control removes the need for opto-couplers, while a primary side half-bridge topology operating at 60 kHz and secondary side Schottky rectification provides low-switching losses, enabling highly-efficient power conversion. The single-side populated PCB board provides a convenient tool for evaluation and on-the-fly optimization of the design with adequate headers, jumpers and test points for covering a wide variety of applications.

Watch a TIDA-00349 overview video on the isolated DC/DC converter turn-key reference design.

  • Isolated DC/DC converter for 3-V to 5.2-V input with up to 60-mW output power
  • Highly efficient design for up to 10-mA output current with up to 86% efficiency
  • Open-loop, optocoupler-less design
  • Synchronization output and fixed switching frequency enable use in noise sensitive applications
  • Flexible configurable board enables easy evaluation and modification
  • Design guide provides detailed description and performance test data
Output voltage options TIDA-00349.1
Vin (Min) (V) 3
Vin (Max) (V) 5.2
Vout (Nom) (V) 5
Iout (Max) (A) .01
Output Power (W) .05
Isolated/Non-Isolated Isolated
Input Type DC
Topology Half Bridge- Hard Switched
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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.

TIDU813B.PDF (6880 K)

Reference design overview and verified performance test data

TIDRD94.PDF (657 K)

Detailed schematic diagram for design layout and components

TIDRD95.PDF (80 K)

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

TIDRD96.PDF (115 K)

Detailed overview of design layout for component placement

TIDRD98.ZIP (1097 K)

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

TIDC950.ZIP (276 K)

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

TIDRD97.PDF (490 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Uniquely Efficient Isolated DC/DC Converter for Ultra-Low and Low Power Apps (Rev. B) Dec. 20, 2016
Technical article The secrets of energy harvesting: The sloth and the bear PDF | HTML Sep. 29, 2015

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