公开(公告)号：US20220360177A1

公开(公告)日：2022-11-10

申请号：US17730878

申请日：2022-04-27

Applicant: STMicroelectronics S.r.l.

Inventor： Gerardo CASTELLANO ,  Leonardo PEDONE ,  Filippo MINNELLA ,  Marcello RAIMONDI

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/08

Abstract: A control circuit for a multiphase buck converter includes a regulator circuit and a plurality of phase control circuits. The regulator circuit generates a regulation signal based on a feedback signal and a reference signal, and each phase control circuit receives a current sense signal and generates a respective PWM signal based on the respective current sense signal and the regulation signal. The control circuit includes a first selector circuit and a second selector circuit configured to receive a selection signal and selectively connect each phase control circuit of a subset of the phase control circuits to a PWM signal for driving a respective stage of the multiphase buck converter, and to a current sense signal provided by the respective stage of the multiphase buck converter. A selection control circuit generates the selection signal in order to connect the phase control circuits to different stages of the multiphase buck converter.