Power supply equipment and control method and device thereof

The invention discloses power supply equipment and a control method and device thereof. The power supply equipment comprises a main control module, a power supply phase control module, N power supplyphase output modules and N-1 switch modules, wherein N is an integer greater than 2; the switch module is connected between the output ends of every two adjacent power supply phase output modules; each second end of the main control module is connected with the control end of each switch module; the main control module is used for controlling the on-off state of each switch module according to theoutput setting information of the power supply phase and is also used for sending output setting information to the power supply phase output modules; the power supply phase control module is used for receiving the output setting information and sending power supply driving signals to the corresponding power supply phase output modules according to the output setting information; and the power supply phase output modules