公开(公告)号：US11422578B2

公开(公告)日：2022-08-23

申请号：US16860887

申请日：2020-04-28

Applicant: NXP B.V.

Inventor： Xiaoqun Liu ,  Madan Mohan Reddy Vemula ,  Mohammad Nizam Kabir

IPC: G05F1/563 ,  G05F1/571 ,  G05F1/575 ,  G05F1/59 ,  G05F1/46

Abstract: A low dropout regulator includes a first stage that generate a first output voltage and a second stage that generates a second output voltage different from the first output voltage. The first stage and the second stage are coupled in parallel to a node, the stages are selectively controlled respective first and second output signals based on different conditions. One condition may be operation of a load in one or more predetermined modes. Another condition may be transition between modes. Selective control of the first stage during a mode transition may reduce voltage undershoot or voltage overshoot in the load.