144W Single-Phase Synchronous Boost Converter With DCR Current Sensing
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PMP9393 is a Single-Phase Synchronous Boost Converter which utilizes the LM5122 controller IC.  The design accepts an input voltage of 18Vin to 20Vin and provides an output of 48Vout capable of supplying a maximum of 3A of current to the load. DCR current sensing has been implemented in order to reduce the BOM cost associated with using a high power current sense resistor.

  • Synchronous rectifier for high efficiency
  • High power density
  • Lower temp rise in output rectifier
  • Synchronizable to external clock
  • Stackable for higher output currents
  • Bypass mode capable when Vin >Vout

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Schematic/Block Diagram

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Design Files

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18531Q5A  60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 4.6 mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LM5122  3-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capability  Step-up (boost) 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
LM5122 Download Download
Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1166 30 Mar 2015
Design files (7)
Title Type Size (KB) Date
ZIP 283 30 Mar 2015
ZIP 665 30 Mar 2015
PDF 559 30 Mar 2015
PDF 246 30 Mar 2015
PDF 180 30 Mar 2015
PDF 120 30 Mar 2015
PDF 138 30 Mar 2015

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