How to protect automotive USB Type-C™, USB 3.0 and USB 2.0 ports against short-to-Vbus/battery events
April 17, 2017
USB ports are found across different locations in the car. Most common places to find them our head units, glove compartment, armrest, rear seats and telematics. One thing to keep in mind is that there are several internal USB ports that are used to communication purposes back to the head unit, this internal USB ports are likely to be subjected to OVP events generated by the car battery. One quick example is a technician working on the vehicle during assembly or maintenance and shorting the USB lines by using a screw driver. Also it’s important to note that internal USB ports do not required a charging controller since these are used mainly for communication purposes only. For external USB ports BC1.2 continues to be dominant in automotive in order to be able to support legacy USB consumer devices.