公开(公告)号：US11515786B2

公开(公告)日：2022-11-29

申请号：US16553759

申请日：2019-08-28

Applicant: QUALCOMM Incorporated

Inventor： Linfei Guo ,  Chengwu Tao ,  Joseph Duncan ,  Xiaocheng Jing ,  Amir Parayandeh ,  Xun Liu

IPC: H02M3/156 ,  H02M1/00

Abstract: Aspects of the present disclosure generally relate to methods and apparatus for continuous current sensing for a single-inductor multiple-output (SIMO) regulator. One example method includes operating a plurality of switches of the SIMO regulator, via a plurality of control signals, according to a plurality of switching states using a switching controller, sensing currents associated with at least a portion of the plurality of switches of the SIMO regulator using a plurality of current sense circuits, and selectively outputting a sense current from one of the plurality of current sense circuits based on a change in the plurality of controls signals occurring between a transition from a first switching state to a second switching state of the plurality of switching states.

公开(公告)号：US11671081B2

公开(公告)日：2023-06-06

申请号：US17119817

申请日：2020-12-11

Applicant: QUALCOMM Incorporated

Inventor： Mukesh Bansal ,  Iulian Mirea ,  Xun Liu

IPC: H02M3/158 ,  H03K3/356 ,  H02M1/088

CPC classification number: H03K3/356017 ,  H02M3/158 ,  H02M1/088

Abstract: Certain aspects of the present disclosure are directed to a regulator. The regulator generally includes a source follower circuit and a low-voltage assist circuit. The low-voltage assist circuit generally includes a first transistor having a gate coupled to an output node of the source follower circuit, a voltage comparison circuit having a first input coupled to a source of the first transistor and a second input coupled to a control input node of the source follower circuit, and a second transistor having a gate coupled to an output of the voltage comparison circuit and a drain coupled to the output node of the source follower circuit.