公开(公告)号：US20210194364A1

公开(公告)日：2021-06-24

申请号：US16721737

申请日：2019-12-19

Applicant: QUALCOMM Incorporated

Inventor： Sanghwa JUNG ,  Xiaolin GAO

IPC: H02M3/158 ,  H02J7/00

Abstract: A method of operating a buck converter is disclosed. The buck converter includes a first capacitor, a second capacitor, and an inductor between a node and an output of the buck converter. The method includes, during a first portion of a cycle, coupling the first capacitor and the second capacitor in series between an input of the buck converter and a ground, wherein the first capacitor is coupled between the input of the buck converter and the node, and the second capacitor is coupled between the node and the ground. The method also includes, during a second portion of the cycle, coupling the second capacitor and the first capacitor in series between the input of the buck converter and the ground, wherein the second capacitor is coupled between the input of the buck converter and the node, and the first capacitor is coupled between the node and the ground.

公开(公告)号：US20220311339A1

公开(公告)日：2022-09-29

申请号：US17216171

申请日：2021-03-29

Applicant: QUALCOMM Incorporated

Inventor： Ta-Tung YEN ,  Sanghwa JUNG ,  Xiaolin GAO

IPC: H02M3/158 ,  H02M3/07

Abstract: Techniques and apparatus for current-based transitioning between a buck converter mode and a charge pump mode in an adaptive combination power supply circuit. One example power supply circuit generally includes a switching regulator and control logic coupled to the switching regulator. The control logic is generally configured to compare an indication of a current associated with the switching regulator to a threshold and to control a transition of the switching regulator between a buck converter mode and a charge pump mode based on the comparison.

公开(公告)号：US20240258819A1

公开(公告)日：2024-08-01

申请号：US18431763

申请日：2024-02-02

Applicant: Qualcomm Incorporated

Inventor： Chunping SONG ,  Cheong KUN ,  Xiaolin GAO ,  Sanghwa JUNG ,  Yue JING

IPC: H02J7/00 ,  H02J7/02

CPC classification number: H02J7/007192 ,  H02J7/02 ,  H02J2207/20

Abstract: An apparatus is disclosed for adaptive multi-mode charging. In an example aspect, the apparatus includes at least one charger having a first node and a second node. The at least one charger is configured to accept an input voltage at the first node. The at least one charger is also configured to selectively operate in a first mode to generate a first output voltage at the second node that is greater than or less than the input voltage or operate in a second mode to generate a second output voltage at the second node that is substantially equal to the input voltage.