公开(公告)号：US20250028344A1

公开(公告)日：2025-01-23

申请号：US18770761

申请日：2024-07-12

Applicant: STMicroelectronics International N.V.

Inventor： Alessandra FARINA ,  Roberto Pio BAORDA ,  Stefano RAMORINI

IPC: G05F1/575 ,  G05F1/565

Abstract: An LDO regulator has a pass device arranged between an input node and an output node. The pass device is controlled at a control node by an error amplifier. A first current generator sources compensation current to the control node, a cascode device is arranged between the control node and a compensation node, and a second current generator sinks compensation current from the compensation node. A compensation capacitor is arranged between the output and compensation nodes. Load current through the pass device is sensed to generate a feedback current at a first feedback node. An input branch of a current mirror receives the feedback current. A filtering circuit is coupled between a control terminal of the input branch and a second feedback node. Output branches of the current mirror sink and source additional compensation current from the compensation node and the control node, respectively, proportional to the feedback current.