6W 48V-72Vin Fly-Buck with Primary and Isolated Secondary Load Reference Design PMP30082 (ACTIVE)

Description & Features

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Key Document

Description

The PMP30082 reference design shows two stage power supply. The first stage is a fly-buck topology that converts an input of 48V-72V to a primary output voltage of 12V with a maximum load current of 250mA and to an isolated secondary output voltage of 24V with a load current of 160mA. Two Buck converters are connected to the primary 12V rail. One generates 5V with 400mA load current, the other one generates 3.3V with 100mA load current.

Features
  • Built and tested
  • Non-isolated and isolated rails with one primary stage
  • Primary side regulated isolated output
  • Wide input voltage range
  • Small form factor

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP30082.1
(Output Voltage 1)
PMP30082.2
(Output Voltage 2)
PMP30082.3
(Output Voltage 3)
PMP30082.4
(Output Voltage 4)
Vin (Min) (V)48481212
Vin (Max) (V)72721212
Vout (Nom) (V)122453.3
Iout (Max) (A).25.16.4.1
Output Power (W)33.842.33
Isolated/Non-IsolatedNon-IsolatedIsolatedNon-IsolatedNon-Isolated
Input TypeDCDCDCDC
TopologyFlybuckFlybuckBuck- SynchronousBuck- Synchronous

TI Devices (3)

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Part Number Name Product Family Sample & Buy 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
LMR23610  SIMPLE SWITCHER, 36V 1A Synchronous Step-Down Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS62125  3V-17V, 300mA Buck Converter With Adjustable Enable Threshold And Hysteresis  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5017 Download Download
Download Download
LMR23610 Download Download
TPS62125 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 650 08 Aug 2016
Design files (6)
Title Type Size (KB) Date
ZIP 33 08 Aug 2016
ZIP 470 08 Aug 2016
PDF 169 08 Aug 2016
PDF 101 08 Aug 2016
PDF 125 08 Aug 2016
PDF 313 08 Aug 2016

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