Multi-phase power converter and method of controlling the same

A multi-phase power converter, configured to convert an input power source into an output power source, the multi-phase power converter comprising:

• at least two power conversion circuits, each power conversion circuit comprising a switch bridge arm formed by an upper switch and a lower switch connected in series;
• and
• a control signal generation unit, configured to receive an output current of the multi-phase power converter and acquire a loading condition of the multi-phase power converter according to the output current, and provide control signals for each upper switch and each lower switch;
• wherein the control signal generation unit is configured to correspondingly turn on or turn off the upper switches and the lower switches according to the loading condition being a light-loading condition so that the at least two switch bridge arms are alternately and non-simultaneously driven with any switching cycle in sequence such that each of the at least two switch bridge arms is driven for a substantially equal time period.