24Vin+/-10%, 5Vout @ 0.3A Flybuck Converter
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An isolated flybuck converter with self-driven synchronous rectification on the secondary side accepts an input voltage of 21.6Vin to 26.4Vin and provides an isolated output of 5Vout capable of supplying a maximum of 0.3A of current to the load.

  • Excellent regulation 4.9Vout ± 1.0% over entire line and load range without opto or discrete Vref
  • No need for pre-load on isolated output, without output voltage rise at light load
  • Improved load regulation, smaller voltage droop at heavy load
  • LM5017 wide Vin range 7.5V to 100V
  • Easy-to-design, cost effective Fly-Buck solution
  • Constant On-Time control, no loop compensation required

See the Important Notice and Disclaimer covering reference designs and other TI resources.


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
CSD18537NQ5A  60V, N ch NexFET MOSFETâ„¢, single SON5x6, 13mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LM5017  7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator  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)
CSD18537NQ5A VSONP (DQJ)| 8 Download
LM5017 Download Download
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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 1182 30 Mar 2015
Design files (5)
Title Type Size (KB) Date
ZIP 207 30 Mar 2015
ZIP 409 30 Mar 2015
PDF 668 30 Mar 2015
PDF 103 30 Mar 2015
PDF 168 30 Mar 2015

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