USB CHARGING DEVICE OF VEHICLE FOR ACTIVELY SWITCHING FAST CHARGE AND DATA COMMUNICATION OF SMART DEVICE MOUNTED IN VEHICLE AND METHOD THEREFOR

摘要

The present invention relates to a USB charging device of a vehicle and a method therefor which converts a voltage of battery power supply of a vehicle supplied through a smart adaptor which allows communication between a smart device and the vehicle into a predetermined USB bus voltage to supply an operating power supply to a USB power supply terminal of the smart device, and an ACC power supply of the vehicle supplied through the smart adaptor is analyzed, if the vehicle is running, a USB data terminal of the smart device is connected to the USB data terminal of the smart adaptor to operate as a data communication mode, and if the vehicle is not running, the USB data terminal of the smart device is connected to a fast charge circuit unit to operate as a fast charge mode.