30 to 350Vin 15Vout @ 1A Isolated Flyback Converter Reference Design


Design files


PMP9334 is an isolated Flyback converter utilizing the LM5022 for industrial applications. It uses primary side regulation from an auxiliary winding with a resistor divider network to the Feedback pin of the LM5022. This design has a minimum operating input voltage of 30V and a max rating of 350V.

  • 350V very high voltage input
  • Primary side regulation with aux winding
  • Utilize a high voltage standoff  supply at start, and then power self by the aux winding output
  • Current mode control with slope compensation
  • Cycle-by-Cycle current limit
Output voltage options PMP9334.1
Vin (Min) (V) 30
Vin (Max) (V) 350
Vout (Nom) (V) 15
Iout (Max) (A) 1
Output Power (W) 15
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.

SNVU393A.PDF (979 K)

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

SNVR397A.PDF (263 K)

Detailed schematic diagram for design layout and components

SNVR398A.PDF (124 K)

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

TIDCB21.ZIP (202 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.

AC/DC & DC/DC controllers (external FET)

LM50226-60V Wide Vin, current mode boost, SEPIC and Flyback controller

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP9334 Test Results (Rev. A) Sep. 28, 2015

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