PMP22845

Isolated 5-V bias supply for automotive CISPR 25, class 5 emissions, reference design

PMP22845

Design files

Overview

This reference design demonstrates EMI mitigation techniques required for a high frequency, reinforced 5-kVRMS isolated, 5-V bias DC/DC converter module to pass the automotive, CIPSR 25, class 5, EMC test standard. The design features a 500-mW, high efficiency bias supply with integrated transformer, control and power stage in a 2.65 mm height SOIC-16 package solution.  Typical bias examples include: digital isolators, voltage and current sensing, CAN transceivers and signal communication used in the design of traction inverters, on-board chargers, battery management systems, infotainment, charging cables and PTC heaters.

Features
  • Passes CISPR 25, class 5 conducted and radiated emissions
  • Low component count, small size, high integration, low profile
  • Integrated IC level transformer rated for 5-kVRMS isolation
  • AEC-Q100 qualified, functional safety capable
  • This design has been tested and verified in an independent, certified anechoic EMI chamber
Output voltage options PMP22845.1
Vin (Min) (V) 4.7
Vin (Max) (V) 5.3
Vout (Nom) (V) 5
Iout (Max) (A) .1
Output Power (W) .5
Isolated/Non-Isolated Isolated
Input Type DC
Topology Other

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.

TIDM865.PDF (173 K)

Detailed schematic diagram for design layout and components

TIDM866.PDF (125 K)

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

TIDM867.PDF (250 K)

Detailed overview of design layout for component placement

TIDM869.ZIP (518 K)

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

TIDCG08.ZIP (3089 K)

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

TIDM868.PDF (862 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Isolated DC/DC converters & modules

UCC12051-Q1Automotive, 500-mW, 5-kVrms isolated DC/DC module with integrated transformer

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

Technical documentation

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Type Title Date
* User guide Isolated 5-V Bias Supply for Automotive CISPR 25, Class 5 Emissions, Ref. Design Apr. 20, 2021
White paper High-Voltage Semiconductor Solutions for Meeting Isolation Requirements Jan. 20, 2021

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