公开(公告)号：US20240055992A1

公开(公告)日：2024-02-15

申请号：US18489639

申请日：2023-10-18

Applicant: QUALCOMM Incorporated

Inventor： Sanghwa JUNG ,  Chunping SONG ,  Ta-Tung YEN ,  Yue JING

IPC: H02M3/158 ,  H02M3/07

CPC classification number: H02M3/1582 ,  H02M3/07

Abstract: A three-level buck converter circuit configurable to transition between a three-level buck converter mode and a two-level buck converter mode and methods for regulating power using such a circuit. One example power supply circuit generally includes a three-level buck converter circuit and a control circuit coupled to the three-level buck converter circuit and configured to control operation of the three-level buck converter circuit between a three-level buck converter mode and a two-level buck converter mode. The three-level buck converter circuit generally includes a first switch, a second switch coupled to the first switch via a first node, a third switch coupled to the second switch via a second node, a fourth switch coupled to the third switch via a third node, a first capacitive element coupled between the first node and the third node, and an inductive element coupled between the second node and an output node.

公开(公告)号：US20230006555A1

公开(公告)日：2023-01-05

申请号：US17363948

申请日：2021-06-30

Applicant: QUALCOMM Incorporated

Inventor： Sanghwa JUNG ,  Chunping SONG ,  Ta-Tung YEN ,  Yue JING

IPC: H02M3/158 ,  H02M3/07

Abstract: A three-level buck converter circuit configurable to transition between a three-level buck converter mode and a two-level buck converter mode and methods for regulating power using such a circuit. One example power supply circuit generally includes a three-level buck converter circuit and a control circuit coupled to the three-level buck converter circuit and configured to control operation of the three-level buck converter circuit between a three-level buck converter mode and a two-level buck converter mode. The three-level buck converter circuit generally includes a first switch, a second switch coupled to the first switch via a first node, a third switch coupled to the second switch via a second node, a fourth switch coupled to the third switch via a third node, a first capacitive element coupled between the first node and the third node, and an inductive element coupled between the second node and an output node.

公开(公告)号：US20210067033A1

公开(公告)日：2021-03-04

申请号：US17006001

申请日：2020-08-28

Applicant: QUALCOMM Incorporated

Inventor： Yue JING ,  Sanghwa JUNG

IPC: H02M3/07

Abstract: Techniques and apparatus for sensing and/or maintaining a differential voltage across a flying capacitor in a switched-mode power supply circuit (SMPS) when operating in certain modes (e.g., full duty mode). 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 first capacitive element having a first terminal coupled to the first node and having a second terminal coupled to the third node, and a voltage control circuit coupled to the first capacitive element and configured to maintain a defined voltage across the first capacitive element. The power supply circuit may further include a switched-capacitor circuit coupled to the first capacitive element and configured to sense a differential voltage across the first capacitive element.

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.

公开(公告)号：US20210194358A1

公开(公告)日：2021-06-24

申请号：US17125571

申请日：2020-12-17

Applicant: QUALCOMM Incorporated

Inventor： Yue JING ,  Sanghwa JUNG ,  David WONG

IPC: H02M3/07 ,  H02M1/36 ,  H02M3/158

Abstract: Certain aspects of the present disclosure generally relate to soft starting a switched-mode power supply (SMPS) circuit operating as a charge pump in a reverse multiply-by-two mode. One example SMPS circuit generally includes a plurality of transistors, a capacitive element coupled to the plurality of transistors, and a current sink coupled between the capacitive element and a reference potential node for the SMPS circuit. For certain aspects, the current sink is configured to be enabled during a first phase of a soft start operation for the SMPS circuit, but is configured to be disabled during a second phase of the soft start operation and during normal operation for the SMPS circuit.