PMP9397

CISPR 25 Class 5 Rated 3.3W Automotive Power Reference Design

PMP9397

Design files

Overview

The PMP9397 reference design provides a conducted EMI optimized 3.3W power supply design for automotive applications.  The design uses the non-synchronous buck regulator, LM26001, to generate a 3.3V, 1A output.  The input voltage range is 4.5V to 38V suitable for automotive battery supply.  The reference design comes with the input EMI filter stage to suppress the switching noise in the input supply line, and the board is tested to be compliant with the CISPR 25 Class 5 conducted emissions standard.

Features
  • CISPR 25 class 5 conducted emissions standard compliance
  • LM26001, 38V, 1A, buck regulator
  • 4.5-38V operating input voltage range
  • Input EMI filter to suppress conducted emissions
  • Optimized layout for better EMI performance
  • 3.3W power supply design, ideal for 12V automotive battery system
Output voltage options PMP9397.1
Vin (Min) (V) 4.5
Vin (Max) (V) 38
Vout (Nom) (V) 3.3
Iout (Max) (A) 1
Output Power (W) 3.3
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Non Sync

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.

TIDU659.PDF (270 K)

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

TIDRBY0.PDF (190 K)

Detailed schematic diagram for design layout and components

TIDRBY1.PDF (25 K)

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

TIDC779.ZIP (65 K)

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

Products

Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

LM260011.5A Switching Regulator with High Efficiency Sleep Mode

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Technical article System Integration using optimized EMC designs Dec. 19, 2014
Test report PMP9397 Test Results Nov. 24, 2014

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