TIDA-01253

CISPR 25 Class 4 Automotive Dual Remote and Local USB Port Reference Design

TIDA-01253

Design files

Overview

This automotive media port design allows customers to accelerate media port systems by taking advantage of a complete reference design comprising analog AEC-100-qualified integrated circuits (ICs). The reference design is specified for automotive media ports that require both local-port and remote-port support utilizing the USB BC1.2 specification. This design creates a robust, flexible solution which allows the system to charge both ports simultaneously while still accounting for voltage droop on a remote port.

Features
  • LM74610-Q1 smart diode emulates ideal diode rectifier and protects downstream devices in case of reverse polarity
  • TPS254900 and TPS2511 provide remote port and local port negotiation over D+/D– lines, respectively, to enable charging of either cable compensated or typical local port
  • Components in system provide short-to-battery protection and oad dump protection against input transients up to 40V
  • Automotive grade LMS3635-Q1 optimizes power supply through adjustable switching frequencies outside of AM and FM band operation and supports both ports by providing up to 5.5A continuous current without requiring external diodes or MOSFETs

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.

TIDUCC6.PDF (5783 K)

Reference design overview and verified performance test data

TIDRUU6.PDF (139 K)

Detailed schematic diagram for design layout and components

TIDRUU7.PDF (56 K)

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

TIDRUU8.PDF (86 K)

Detailed overview of design layout for component placement

TIDRUV0.ZIP (5826 K)

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

TIDCEB4.ZIP (1438 K)

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

TIDRUU9.PDF (633 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

LMS3655-Q15.5-A, 36-V synchronous, 400-kHz, step-down converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
General-purpose op amps

LM358ADual, 30-V, 700-kHz, 3-mV offset voltage operational amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
Ideal diode/ORing controllers

LM74610-Q10.48-V to 42-V, zero IQ automotive ideal diode controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
USB power switches & charging port controllers

TPS2511USB dedicated charging port controller and 2.2A power switch

Data sheet document-pdfAcrobat PDF open-in-new HTML
USB power switches & charging port controllers

TPS254900-Q1Automotive USB Charge port controller with short to BATT protection and droop compensation

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

Technical documentation

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* Design guide CISPR 25 Class 4 Automotive Dual Remote and Local USB Port Reference Design Nov. 22, 2016

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