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

1 января 2018

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.

Особенности

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