公开(公告)号：US20230238873A1

公开(公告)日：2023-07-27

申请号：US17582431

申请日：2022-01-24

Applicant: STMicroelectronics S.r.l.

Inventor： Marco Pasotti ,  Laura Capecchi ,  Riccardo Zurla, JR. ,  Marcella Carissimi

IPC: H02M1/00 ,  H02M3/07

CPC classification number: H02M1/0045 ,  H02M3/073 ,  G11C13/0004

Abstract: A voltage regulator receives a reference voltage and generates a regulated voltage using a MOSFET having a gate terminal configured to receive a control voltage. A charge pump receives the regulated voltage and generates a charge pump voltage in response to an enable signal and a clock signal generated in response to the enable signal. The voltage regulator further includes a first switched capacitor circuit coupled to the gate terminal and configured to selectively charge a first capacitor with a first current and impose a first voltage drop on the control voltage in response to assertion of the enable signal. The voltage regulator also includes a second switched capacitor circuit coupled to the gate terminal and configured to selectively charge a second capacitor with a second current and impose a second voltage drop on the control voltage in response to one logic state of the clock signal.