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PMP20249 Reference Design

Texas Instruments

CISPR 25 Class 4 Rated Design for Dual Automotive USB Charger Reference Design

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 outputsOff-battery operation with positive and negative over-voltage transient protectionPassed CISPR25 Class 4 conducted EMI testAll devices have an AEC-Q100 qualified version availableAll devices switch outside of the AM and FM bands
Applications
Product Categories
  • Power management
Additional details