Motor driving circuit of electronic parking brake system

A motor driving circuit of an electronic parking brake system includes first and second motors releasing or activating parking brakes respectively applied to wheels different from each other, and first and second electronic control units respectively driving and controlling the first and second motors; in a state in which the first electronic control unit drives the first motor and the second motor, the second electronic control unit does not intervene in driving the first motor and the second motor, and the second electronic control unit drives and controls the first motor and the second motor only when there is an abnormality in the first electronic control unit. 本发明涉及一种电子驻车制动系统的电机驱动电路，包括：第一电机和第二电机，释放或启动分别应用于彼此不同的车轮的驻车制动器，以及第一电子控制单元和第二电子控制单元，分别驱动控制所述第一电机和所述第二电机；在所述第一电子控制单元驱动所述第一电机和所述第二电机的状态下，所述第二电子控制单元不介入对第一电机和第二电机的驱动，所述第二电子控制单元仅在所述第一电子控制单元存在异常时驱动控制第一电机和第二电机。