Quarter Brick Dual Phase Synchronous Buck Converter for Enterprise Systems Server Reference Design
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Key Document


PMP20804 is a dual-phase synchronous buck converter reference design utilizing the LM5119 dual synchronous buck controller I.C. The design accepts an input voltage of 20V to 40V and provides a 12V output capable of supplying 33A of current to the load. This represents a power density design of 400W in a quarter brick footprint. The maximum component height is set by the Coilcraft VER2923-103 inductors at 0.875 in.

  • Emulated peak current-mode control
  • High power density
  • External synchronization
  • 400W output power
  • Standard quarter brick footprint

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(Output Voltage 1)
Vin (Min) (V)20
Vin (Max) (V)40
Vout (Nom) (V)12
Iout (Max) (A)33
Output Power (W)396
Input TypeDC
TopologyBuck- Multiphase

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18531Q5A  60V, N ch NexFET MOSFETâ„¢, single SON5x6, 4.6mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LM5119  5.5-65V Wide Vin, Current Mode Dual Synchronous Buck Controller  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18531Q5A VSONP (DQJ)| 8 Download
LM5119 Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 1231 11 Dec 2017
Design files (6)
Title Type Size (KB) Date
ZIP 236 11 Dec 2017
ZIP 546 11 Dec 2017
PDF 791 11 Dec 2017
PDF 146 11 Dec 2017
PDF 27 11 Dec 2017
PDF 152 11 Dec 2017

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