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 8:
9. An apparatus, comprising:
a) a multi-phase power converter having a plurality of power stage circuits coupled in parallel;
b) a control circuit configured to enable corresponding of the plurality of power stage circuits to operate in accordance with a load current, such that a switching frequency is maintained within a predetermined range when the load current changes;
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.