CISPR 25 Class 4 Rated Design for Dual Automotive USB Charger Reference Design
PMP20249
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical Documents

Support & Training

Order Now


See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document

Description

PMP20249 is an EMI optimized design for dual automotive USB charger system utilizing the LMS3635 and LMS3655 regulator ICs (400kHz fully-integrated synchronous buck for automotive application) and TPS2549 USB switch (TPS2549-Q1 automotive USB charging port controller with integrated power switch & cable compensation). The design accepts an input voltage range of 6V to 18V and provides the outputs of 5V@3.5A and 5V@2.5A. The design has a differential EMI filter, and has been tested for and passed CISPR25 Class 4 conducted EMI limits without shileding, a common mode choke, or a ferrite bead.

Features
  • Wide-Vin front end power supply for automotive USB charger system with dual 12.5W outputs
  • Off-battery operation with positive and negative over-voltage transient protection
  • Passed CISPR25 Class 4 conducted EMI test
  • All devices have an AEC-Q100 qualified version available
  • All devices switch outside of the AM and FM bands

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Test Data

Get results faster with test and simulation data that's been verified.

Download Test Data

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files


Parametrics
 PMP20249.1
(Output Voltage 1)
Vin (Min) (V)6
Vin (Max) (V)18
Vout (Max) (V)5
Vout (Nom) (V)3.5
Iout (Max) (A)2.5
Output Power (W)8.75
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyBuck- Synchronous

TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LMS3635-Q1  3.5A /5.5A, 36V Synchronous, 400kHz, Step-Down Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMS3655  5.5A, 36V Synchronous, 400kHz, Step-Down Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMS3655-Q1  3.5A /5.5A, 36V Synchronous, 400kHz, Step-Down Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS2549-Q1  USB Charging Port Controller  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LMS3635-Q1 Download Download
LMS3655 Download Download
LMS3655-Q1 Download Download
TPS2549-Q1 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

Datasheet (1)
Title Type Size (KB) Date
PDF 2625 01 Mar 2018
User guides (1)
Title Type Size (KB) Date
PDF 1165 11 Sep 2017
Design files (6)
Title Type Size (KB) Date
ZIP 400 11 Sep 2017
ZIP 5418 11 Sep 2017
PDF 1023 11 Sep 2017
PDF 104 11 Sep 2017
PDF 101 11 Sep 2017
PDF 152 11 Sep 2017

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles