ELECTRIC BRAKE SYSTEM AND METHOD OF CONTROLLING THE SAME

An electric brake system including an integrated master cylinder, a hydraulic pressure supply device configured to generate a hydraulic pressure of a pressing medium, and an auxiliary brake module configured to provide the hydraulic pressure to a first wheel cylinder and a second wheel cylinder, wherein the auxiliary brake module may include a pump configured to press the pressing medium, a motor configured to operate the pump, a first auxiliary flow path configured to transfer the pressing medium pressed by the pump to the first wheel cylinder, a first auxiliary supply flow path provided to supply the pressing medium to the pump, a first auxiliary supply valve provided on the first auxiliary supply flow path to control the pressing medium to be supplied to the pump, and a first pressure control valve configured to control a pressure of the first auxiliary flow path.