Patent ID: 8183842
Filing Date: 2012-05-22
Classification: H02M

Abstract:
1. A control device for a multi-phase DC-DC converter, the multi-phase DC-DC converter comprising a plurality of converting channels, the control device comprising: an error amplifier for comparing a feedback signal of the multi-phase DC-DC converter and a reference signal to generate a comparison result; a main comparator coupled to the error amplifier for comparing the comparison result and a first sawtooth signal corresponding to a first converting channel of the plurality of converting channels to generate a first pulse width modulation (PWM) signal; and at least one computing module, each computing module corresponding to one of the plurality of converting channels, for generating a PWM signal according to the comparison result, a sawtooth signal corresponding to the converting channel, a sensing signal corresponding to the converting channel, and a sensing signal corresponding to a previous converting channel of the converting channel to control the converting channel; wherein each computing module comprises: