300W High-Efficiency Single-Phase Synchronous Buck Converter Reference Design
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PMP10514 is a High-Efficiency Single-Phase Synchronous Buck Converter using the LM25117 controller IC. The design accepts an input voltage of 30.4Vin to 33.6Vin (32Vin Nominal) and provides an output of 20 Vout capable of supplying 15A of continuous current to the load.

  • High efficiency design: (97.9% Peak)
  • High power density: 300W/9.56 Sq. Inches
  • Programmable current limit with Hiccup Mode
  • Precision voltage reference accuracy of +/-1.5%

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Schematic/Block Diagram

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Design Files

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(Output Voltage 1)
Vin (Min) (V)30.4
Vin (Max) (V)33.6
Vout (Nom) (V)20
Iout (Max) (A)15
Output Power (W)300
Input TypeDC
TopologyBoost- Synchronous

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM25117  4.5-42V Wide Vin, Current Mode Synchronous Buck Controller with Tracking  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM25117 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1194 10 Apr 2015
Design files (7)
Title Type Size (KB) Date
ZIP 333 10 Apr 2015
ZIP 570 10 Apr 2015
PDF 1088 10 Apr 2015
PDF 178 10 Apr 2015
PDF 131 10 Apr 2015
PDF 71 10 Apr 2015
PDF 369 10 Apr 2015

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