CISPR 25 Class 5 Rated 3W SEPIC for Automotive Infotainment Display Power - Reference Design

(ACTIVE) PMP9481

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Description

PMP9481 is a conducted EMI optimized (CISPR 25 Class 5) 3W SEPIC converter for wide range Vin automotive applications using the LM5001 regulator IC.  The design accepts an input voltage of 6.5Vin to 20Vin and provides an output of 12Vout capable of supplying 0.25A of current to the load.  This design features the LM5001 boost controller available in automotive grade versions and qualified in AEC-Q100 Grade 1.  LM5001 has a very wide Vin range of 3.1V to 75V and hence is input transient protected.  The board layout is optimized for improved conducted EMI performance.  The board is tested under the automotive EMC standard, CISPR 25, and its conducted emissions are in compliance with the CISPR 25 Class 5 requirements.

Features
  • CISPR 25 Class 5 conducted emissions standard compliance
  • EMI performance optimized layout
  • 500KHz switching frequency to avoid high frequency noise and input EMI filter to suppress conducted emissions
  • LM5001-Q1- AEC-Q100 qualified
  • Wide Vin range of 3.1V to 75V, input transient protection
  • Integrated high voltage bias regulator
  • Very low rise in temperature – best suited for automotive applications

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Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP9481.1
(Output Voltage 1)
Vin (Min) (V)6.5
Vin (Max) (V)20
Vout (Nom) (V)12
Iout (Max) (A).25
Output Power (W)3
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologySepic- Integrated Switch

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5001  3.1-75V Wide Vin, 1A Current Mode Non-Synchronous Switch Mode Regulator  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
LM5001-Q1  Automotive Grade 3.1-75V Wide Vin, 1A Current Mode Non-Synchronous Switch Mode Regulator  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5001 Download Download
Download Download
LM5001-Q1 Download

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Technical Documents

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User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 2872 23 Sep 2014 9
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 178 23 Sep 2014 7
PDF 24 23 Sep 2014 1 1
PDF 49 23 Sep 2014 4

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