250W Single Stage LLC-SRC Converter Reference Design


Design files


The PMP9739 is a single stage LLC series resonant converter (SRC), producing up to a 250W output using UCC25600 resonant controller. With the use of single stage LLC-SRC, the converter efficiency goes up to 89% at 250W full output power.

  • High efficiency single stage AC/DC converter
  • Up to 89% efficiency at 250W output
  • AC/DC single stage LLC resonant converter
  • 102VAC to 138VAC input and up to 24V/250W
  • Test report available
Output voltage options PMP9739.1
Vin (Min) (V) 100
Vin (Max) (V) 132
Vout (Nom) (V) 24
Iout (Max) (A) 10.42
Output Power (W) 250.08
Isolated/Non-Isolated Isolated
Input Type AC
Topology Half Bridge- LLC
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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.

TIDUA41.PDF (1700 K)

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

TIDRF75.PDF (196 K)

Detailed schematic diagram for design layout and components

TIDRF76.PDF (144 K)

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

TIDRF77.PDF (148 K)

Detailed overview of design layout for component placement


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


Includes TI products in the design and potential alternatives.


TL331High Voltage Single Differential Comparator

Data sheet: PDF | HTML
LLC controllers

UCC256008-pin high-performance resonant mode LLC controller

Data sheet: PDF | HTML
Shunt voltage references

LM4312%, 1%, or 0.5% accuracy, adjustable precision Zener shunt regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP9739 Test Results Jun. 12, 2015

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