Patent ID: 9213346
Filing Date: 2015-12-15
Classification: G05F,H02M

Abstract:
1. A multiphase switching power supply circuit that converts an input voltage to an output voltage different than the input voltage, comprising: an input terminal to receive the input voltage; an output terminal to output the output voltage; a first to an Nth (N being an integer greater than 2) power stages each including an inductor having one end connected to the output terminal; a high-side switch that connects another end of the inductor to the input terminal; and a low-side switch that connects the other end of the inductor to a reference voltage; and a switch signal controller to supply first to an Nth control signals to the first to Nth power stages, the first to Nth control signals complementarily turning on and off their corresponding high-side switches and low-side switches at a frequency fs, wherein the switch signal controller determines phases of the first to Nth control signals according to a ration between inductance values of the inductors included in the first to Nth power stages.