Low Power Flyback with Ultra Wide Input Voltage Range Reference Design


Design files


This reference design has an ultra-wide input voltage range from 19-375V DC / 19-265V AC, and provides an isolated output of 12.0V/40mA. A linear regulator provides a second output of 5.0V/15mA.

  • Ultra-Wide Input Voltage Range
  • Low Power
Output voltage options PMP10098.1
Vin (Min) (V) 19
Vin (Max) (V) 265
Vout (Nom) (V) 12
Iout (Max) (A) .04
Output Power (W) .48
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- Non Sync
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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.

TIDU881.PDF (1070 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


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

TIDCA17.ZIP (34 K)

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.

Boost controllers (external switch)

LM34812.97V to 48V High-Efficiency Controller for Boost, SEPIC and Flyback

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

LP2980-N50-mA, 16-V, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Shunt voltage references

LMV4311.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Data sheet: PDF

Technical documentation

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View all 2
Type Title Date
Technical article Power Tips: How to manage an ultrawide-input low-power flyback PDF | HTML Sep. 20, 2015
Test report PMP10098 Test Results Apr. 01, 2015

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