公开(公告)号：US20240419201A1

公开(公告)日：2024-12-19

申请号：US18335797

申请日：2023-06-15

Applicant: STMicroelectronics International N.V.

Inventor： Lukas Buryanec

IPC: G05F1/575 ,  G05F1/46 ,  G05F1/573

Abstract: A voltage regulator circuit includes an input configured to receive an input voltage, an output configured to produce a regulated output voltage, a pass element coupled between the input and the output, a bypass element coupled in parallel with the pass element, a feedback divider coupled between the output and a ground node, an error amplifier coupled between a control node of the pass element and the feedback divider, and a dropout transition control circuit coupled to the feedback divider configured to activate a dropout mode of the voltage regulator circuit by controlling a dropout transition at the output from the regulated output voltage to a dropout voltage level to limit inrush current. The feedback divider is configured to produce a feedback signal indicative of the output voltage. The error amplifier is configured to minimize the difference between a reference and the feedback signal.