CISPR 25 Class 5 Rated Multi-Output Power Supply for Automotive Cluster in Infotainment System

(ACTIVE) PMP9487

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Description

PMP9487 is a conducted EMI optimized (CISPR 25) 8W SEPIC converter for wide range Vin automotive infotainment cluster applications using the LM5001 regulator IC (used as SEPIC), LM46002 (used as buck) and LM2831Y regulator IC (used as buck).  The design accepts an input voltage of 6.5Vin to 20Vin and provides the outputs of 12V @ 250mA, 3.3V @ 1.2A and 1.8V @ 500mA.  It features a small size and is an inexpensive and more efficient solution to using boost converters and linear regulators.  Only a single differential filter is used for the complete power tree design in an automotive cluster.

Features
  • Optimized layout for EMI performance
  • Single differential filter for all the switching converters
  • Pass CISPR 25 Class 5 FM radio band without common mode choke
  • LM5001 AEC-Q100 qualified version available
  • 6.5V to 20V wide Vin range

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP9487.1
(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- Synchronous

TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM2831  High Frequency 1.5A Load - Step-Down DC-DC Regulator  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LM46002  3.5V to 60V, 2A Synchronous Step-Down Voltage Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LM46002-Q1  Automotive Qualified 3.5V to 60V, 2A Synchronous Step-Down Voltage Converter  Step-down (buck)  Sample & Buy View 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)
LM2831 Download Download
Download Download
LM46002 Download Download
LM46002-Q1 Download
LM5001 Download Download
Download Download
LM5001-Q1 Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 2138 30 Sep 2014 10
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 211 30 Sep 2014 7
PDF 26 30 Sep 2014 4
PDF 262 30 Sep 2014 11

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