公开(公告)号：US20240291284A1

公开(公告)日：2024-08-29

申请号：US18173518

申请日：2023-02-23

Applicant: QUALCOMM Incorporated

Inventor： Chunping SONG ,  Georgios Konstantinos PAPARRIZOS ,  Xinying DING ,  Jiwei CHEN ,  Guoyong Guo

IPC: H02J7/00 ,  H02M3/158

CPC classification number: H02J7/0013 ,  H02J7/0047 ,  H02J7/007 ,  H02M3/158 ,  H02J2207/20 ,  H02M3/07

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for supplying power, including battery charging. One example power supply circuit generally includes a switching regulator including an output node; a first battery node for coupling to a first battery; a second battery node for coupling to a second battery; a first switch coupled between the output node of the switching regulator and the first battery node; and a second switch coupled between the output node of the switching regulator and the second battery node. Such a power supply circuit may independently control and monitor the charging of multiple independent batteries without using multiple chargers, may balance the batteries during discharging, and may operate without a current limit switch.

公开(公告)号：US20200161976A1

公开(公告)日：2020-05-21

申请号：US16683913

申请日：2019-11-14

Applicant: QUALCOMM Incorporated

Inventor： Chunping SONG ,  Jiwei CHEN ,  David King Wai LI

IPC: H02M3/158 ,  H02J7/00 ,  H02J7/34

Abstract: Certain aspects of the present disclosure generally relate to an adaptive combination power supply circuit. The adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor; a second transistor coupled to the first transistor via a first node; a third transistor coupled to the second transistor via a second node; a fourth transistor coupled to the third transistor via a third node; a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element having a first terminal coupled to the second node; and a switch having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.