Patent ID: 11942867
Assignee: SILERGY SEMICONDUCTOR TECHNOLOGY (HANGZHOU) LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 0:
1. A method of controlling a multi-phase power converter having a plurality of power stage circuits coupled in parallel, the method comprising:
a) obtaining a load current of the multi-phase power converter;
b) controlling a number of power stage circuits that are enabled to operate in accordance with the load current, such that a switching frequency is maintained within a predetermined range when the load current changes; and
c) wherein when more than one power stage circuit is enabled to operate, each of the enabled plurality of power stage circuits operates under a critical conduction mode regardless of a change of the load current, and each main power switch in each corresponding enabled power stage circuit is turned on when a phase current corresponding to the power stage circuit drops to zero, and is turned off according to a feedback signal, such that a switching frequency is inversely proportional to the load current.