Multiphase voltage converter, integrated circuit, controller and control method

The present disclosure provides a multiphase voltage converter, including a plurality of integrated circuits (ICs) and a controller. Each IC has a power switch, a monitoring pin and a current sense pin. The current sense pin is capable of providing a current sense signal representative of a current flowing through the power switch. The controller has a monitoring pin coupled to the monitoring pin of each IC to provide a clock signal, and multiple multiplex pins coupled to the current sense pins of the ICs to provide multiple data signals. The controller assigns identification codes for the ICs based on the clock signal and the plurality of data signals.