5.5W Dual Output Industrial Isolated Flybuck Reference Design
PMP20330
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Key Document

Description

PMP20330 is an isolated Flybuck converter utilizing the LM5160 for industrial applications. This design has a minimum operating input voltage of 18V and a maximum input voltage of 31V. The design is capable of sourcing 1A continuous current at 3.3Vout, and 0.5A continuous current at 5Vout. Switching frequency is set to 200kHz. A Wurth transformer 750316561 is used for this design.

Features
  • 18V to 31Vin, 7.35V primary output, secondary outputs: +3.3V @ 1A, +5V @ 0.5A – IC capable of 4.5V to 65V input
  • Primary side regulation without opto, good regulation, within +/-5%
  • No loop compensation required/fast transient response
  • Low BOM count and cost, compact solution size
  • No RC snubber at primary winding

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP20330.1
(Output Voltage 1)
PMP20330.2
(Output Voltage 2)
Vin (Min) (V)1818
Vin (Max) (V)3131
Vout (Nom) (V)3.35
Iout (Max) (A)1.5
Output Power (W)3.32.5
Isolated/Non-IsolatedIsolatedIsolated
Input TypeDCDC
TopologyFlybuckFlybuck

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5160-Q1  Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter  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)
LM5160-Q1 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 977 08 Feb 2017
Design files (6)
Title Type Size (KB) Date
ZIP 316 08 Feb 2017
ZIP 382 08 Feb 2017
PDF 620 08 Feb 2017
PDF 100 08 Feb 2017
PDF 114 08 Feb 2017
PDF 263 08 Feb 2017

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