Low Vin Flyback Reference Design for High Voltage Laser Flash Drive


Design files


PMP10666 is a 12W isolated flyback design that supports very low Vin of 3.3V-6V and is capable of delivering 100mA at 120V output. The design uses LM3481 Boost controller IC which works on current mode operation and can be synchronized to any frequency between 100KHz to 1 MHz.

This design was built on a 2 layer board and is a simple, low-BOM-count, and low-cost design providing an isolated output.

  • Low Cost Flyback design for low Vin to  High voltage output
  • Ultra Low Footprint Area for LM3481 Actual Power Stage
  • 100-kHz to 1-MHz Adjustable Synchronizable Clock Frequency and limits the inrush current at start-up
  • IC capable of 3V to 40V in
Output voltage options PMP10666.1
Vin (Min) (V) 3.5
Vin (Max) (V) 5.5
Vout (Nom) (V) 120
Iout (Max) (A) .1
Output Power (W) 12
Isolated/Non-Isolated Isolated
Input Type DC
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.


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

TIDUAJ6.PDF (2816 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.

Boost controllers (external switch)

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

Data sheet: PDF | HTML
N-channel MOSFETs

CSD18504Q5A40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 6.6 mOhm

Data sheet: PDF | HTML
Shunt voltage references

TL431Adjustable precision shunt regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP10666 Test Results Sep. 08, 2015
Test report PMP10666 Transformer Specification (Wurth Electronik) Sep. 14, 2015

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