PMP10571 Reference Design

Texas Instruments

15W Isolated Self-Driven Synchronous Inverting Fly-Buckboost Using LM5160 Regulator Reference Design


PMP10571 is a sync isolated Flybuck-boost converter with a negative primary voltage. The power supply has a synchronous buck regulator: LM5160: and a versa pack transformer. The synchronous rectifier on the secondary improves efficiency and regulation under heavy load. The design accepts an input voltage of 18V to 30V: and outputs 5V: capable of providing 3A of current to the load: making it suitable for 24V input industrial application. The Fly-Buck topology can regulate the secondary side outputs without opto-coupler or aux winding: and is capable of achieving good regulation within ±5%. With LM5160's Constan On-Time control: no loop compensation is required: which  simplifies the design and helps reducing the external part count and BOM cost.

  • Versa pack transformer increase design versatility+5V/3A with LM5160 capable of 4.5V to 65V inputPrimary Side Regulation without Opto: Good Regulation: within +/-5% Synchronous rectifier on the secondary winding improves efficiency and regulation.Constant On Time Control: No Loop Compensation Required: and Fast Transient ResponseNo primary winding snubber is required
Product Categories
  • Power management


Part Number Name Companion Part
CSD18534Q5A CSD18534Q5A Buy Datasheet

Bill Of Materials

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP10571 Gerber 10 Apr 2015 ZIP 95
PMP10571 CAD Files 10 Apr 2015 ZIP 432
PMP10571 PCB 10 Apr 2015 PDF 610
PMP10571 BOM 10 Apr 2015 PDF 105
PMP10571 Schematic 10 Apr 2015 PDF 158