250W Single Stage LLC-SRC Converter Reference Design
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Key Document


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

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Schematic/Block Diagram

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Test Data

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Design Files

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(Output Voltage 1)
Vin (Min) (V)100
Vin (Max) (V)132
Vout (Nom) (V)24
Iout (Max) (A)10.42
Output Power (W)250.08
Input TypeAC
TopologyHalf Bridge- LLC

TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM431  2%, 1%, or 0.5% accuracy, adjustable precision Zener shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TL331  High Voltage Single Differential Comparator  Amplifiers  Sample & Buy Not Available
UCC25600  8-pin high-performance resonant mode LLC controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM431 Download Download
Download Download
Download Download
TL331 Download Download
UCC25600 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1677 12 Jun 2015
Design files (4)
Title Type Size (KB) Date
ZIP 282 12 Jun 2015
PDF 148 12 Jun 2015
PDF 144 12 Jun 2015
PDF 196 12 Jun 2015

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