Control method for multi-phase DC-DC controller and multi-phase DC-DC controller

摘要

A multi-phase DC-DC controller. The multi-phase DC-DC controller comprises converter channels, a channel control device and a power control device. Each converter channel comprises a switch device, a first output node and an inductor coupled between the switch device and the first output node. The channel control device generates adjusted pulse width modulation signals according to control signals of the converter channels to respectively control operation of the switch device in each converter channel. The power control device generates the control signals according to sensed currents in the converter channels so as to dynamically turn on or off each converter channel according to the sensed currents.

主权项

1. A multi-phase DC-DC controller, comprising:
a plurality of converter channels, wherein each converter channel comprises a switch device; channel control circuitry configured to provide plural pulse width modulation (PWM) signals for enabling on and off operation of the plurality of converter channels, wherein at least one of the plural PWM signals is provided according to a control signal, the control signal based on a total current of the plurality of converter channels; and a comparing circuit configured to provide the control signal to the channel control circuitry based on a comparison between a predetermined current and the total current.