公开(公告)号：US20230170803A1

公开(公告)日：2023-06-01

申请号：US18154167

申请日：2023-01-13

Applicant: STMicroelectronics S.r.l.

Inventor： Enrico Ferrara ,  Luca Morinelli

IPC: H02M3/158 ,  H02M1/08 ,  H02M3/156

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/1566 ,  H02M1/0019

Abstract: An embodiment buck converter control circuit comprises an error amplifier configured to generate an error signal based on a feedback signal and a reference signal, a pulse generator circuit configured to generate a pulsed signal having switching cycles set to high and low as a function of the error signal, a driver circuit configured to generate a drive signal for an electronic switch of the buck converter as a function of the pulsed signal, a variable load, connected between two output terminals of the buck converter, configured to absorb a current based on a control signal, and a detector circuit configured to monitor a first signal indicative of an output current provided by the buck converter and a second signal indicative of a negative transient of the output current, and verify whether the second signal indicates a negative transient of the output current.

公开(公告)号：US11581808B2

公开(公告)日：2023-02-14

申请号：US17244406

申请日：2021-04-29

Applicant: STMicroelectronics S.r.l.

Inventor： Enrico Ferrara ,  Luca Morinelli

IPC: H02M3/158 ,  H02M1/08 ,  H02M3/156 ,  H02M1/00

Abstract: An embodiment buck converter control circuit comprises an error amplifier configured to generate an error signal based on a feedback signal and a reference signal, a pulse generator circuit configured to generate a pulsed signal having switching cycles set to high and low as a function of the error signal, a driver circuit configured to generate a drive signal for an electronic switch of the buck converter as a function of the pulsed signal, a variable load, connected between two output terminals of the buck converter, configured to absorb a current based on a control signal, and a detector circuit configured to monitor a first signal indicative of an output current provided by the buck converter and a second signal indicative of a negative transient of the output current, and verify whether the second signal indicates a negative transient of the output current.