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PMP23320

500-W interleaved SEPIC reference design

PMP23320

Design files

Overview

This 500-W interleaved SEPIC converter reference design supplies a non-isolated adjustable 5 V to 110 V output voltage with a maximum output current of 5 A. The main power stage uses two LM5122 controllers to power the primary and secondary phases of the SEPIC. A LM5007 buck converter is used to generate a local 10 V bias.

Features
  • Interleaved power stages reduces output capacitance
  • 1-V peak-to-peak ripple at full load with output voltage of 110-V
  • Achieves over 96% efficiency above 500-W loading across input voltage range
Output voltage options PMP23320.1 PMP23320.2
Vin (Min) (V) 45 45
Vin (Max) (V) 60 60
Vout (Nom) (V) 110 10
Iout (Max) (A) 5 .2
Output Power (W) 550 2
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Sepic- CCM Buck Boost- Non Sync
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

PDF | HTML
TIDT362.PDF (982 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDMC23.PDF (366 K)

Detailed schematic diagram for design layout and components

TIDMC24.PDF (338 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDMC25.PDF (299 K)

Detailed overview of design layout for component placement

TIDMC27.ZIP (1652 K)

Files used for 3D models or 2D drawings of IC components

TIDCGI7.ZIP (943 K)

Design file that contains information on physical board layer of design PCB

TIDMC26.PDF (994 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

LM51223-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capability

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

LM50079-75V Wide Vin, 500mA Constant On-Time Non-Synchronous Buck Regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report 500-W Interleaved SEPIC Power Supply Reference Design PDF | HTML Oct. 18, 2023

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