Dual Output Non-Isolated Flybuck Reference Design

(ACTIVE) PMP10733

Description & Features

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Key Document

Description

PMP10733 uses the LM5160 in a Fly-Buck-Boost topology with the primary set as to a negative voltage.  Setting the primary side to a negative voltage reduces the turn’s ratio of the transformer and yield better line and load regulation as a result.  The primary and secondary voltages are set to negative 15V and positive 15V respectively.  The maximum operating current on the primary and secondary rails are set to 150mA.  The switching frequency is set to 200 kHz.

Features
  • 5V to 20V in, +/-15V @150mA output, 4.5W Pout total, IC capable of 6V to 60Vin
  • 81% peak efficiency
  • Compact solution with Coupled inductor
  • Solution size: 20x20 mm (0.8x0.8 inch); max component height: 4.5mm
  • Board size: 38 x 38 mm (1.5 x 1.5 inch), 2 layer board, 1oz copper

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP10733.1
(Output Voltage 1)
PMP10733.2
(Output Voltage 2)
Vin (Min) (V)55
Vin (Max) (V)2020
Vout (Nom) (V)15-15
Iout (Max) (A).15.15
Output Power (W)2.252.25
Isolated/Non-IsolatedNon-IsolatedNon-Isolated
Input TypeDCDC
TopologyFlybuckFlybuck

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5160  LM5160 Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5160 Download Download
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Technical Documents

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User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 863 10 May 2016 15
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 221 10 May 2016 7
ZIP 294 10 May 2016 4
PDF 408 10 May 2016 5
PDF 60 10 May 2016 4
PDF 76 05 May 2016 11
PDF 113 05 May 2016 13

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