公开(公告)号：US20200381993A1

公开(公告)日：2020-12-03

申请号：US16426494

申请日：2019-05-30

Applicant: QUALCOMM Incorporated

Inventor： Linfei GUO ,  Chengwu TAO ,  Joseph DUNCAN ,  Xiaocheng JING ,  Amir PARAYANDEH ,  Justin PHILPOTT

IPC: H02M3/04 ,  H02M1/00

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for operating a switched-mode power supply (SMPS). One example method generally includes comparing a signal representative of an amount of current across an inductive element of the SMPS with at least three thresholds, selecting a configuration of the SMPS based on the comparison, and configuring the SMPS based on the selection.

公开(公告)号：US20240429882A1

公开(公告)日：2024-12-26

申请号：US18339093

申请日：2023-06-21

Applicant: QUALCOMM Incorporated

Inventor： Chengwu TAO ,  Iulian MIREA ,  Song SHI ,  Jongshick AHN ,  Carl HARDIN

IPC: H03F3/24 ,  H04B1/04

Abstract: Certain aspects of the present disclosure are directed towards an amplification circuit. The amplification circuit generally includes: a first amplifier; a first power supply having an output coupled to a supply input of the first amplifier and configured to provide a first power to the supply input of the first amplifier; a second amplifier; a second power supply having an output coupled to a supply input of the second amplifier and configured to provide a second power to the supply input of the second amplifier; and a third amplifier having a supply input coupled to the first power supply and the second power supply, the first power supply and the second power supply being further configured to provide a third power to the supply input of the third amplifier.

公开(公告)号：US20210067035A1

公开(公告)日：2021-03-04

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

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.