公开(公告)号：US20250132560A1

公开(公告)日：2025-04-24

申请号：US19005813

申请日：2024-12-30

Applicant: QUALCOMM Incorporated

Inventor： Vignesh MARIYAPPAN ,  Anand Kumar KALAIRAJ ,  Prashanth Kumar KAKKIRENI ,  Amit DAS

IPC: H02J1/00 ,  H02J7/00 ,  H02J7/34 ,  H02M1/00 ,  H02M3/158

Abstract: Techniques and apparatus for swapping a primary power source (e.g., a main battery) while using a secondary power source (e.g., a backup battery or a supercapacitor) to power a portable device. One example integrated circuit (IC) for power management generally includes a first power supply node; a second power supply node; a first port for coupling to a primary power source; a first switch coupled between the first power supply node and the first port; a second port for coupling to a secondary power source; a second switch coupled between the first power supply node and the second port; and a third switch coupled between the first and second power supply nodes. For certain aspects, the IC also includes a third power supply node, a voltage regulator coupled between the first and third power supply nodes, and a fourth switch coupled between the second and third power supply nodes.

公开(公告)号：US20240322562A1

公开(公告)日：2024-09-26

申请号：US18188971

申请日：2023-03-23

Applicant: QUALCOMM Incorporated

Inventor： Vignesh MARIYAPPAN ,  Anand Kumar KALAIRAJ ,  Prashanth Kumar KAKKIRENI ,  Amit DAS

IPC: H02J1/00 ,  H02J7/00 ,  H02J7/34 ,  H02M1/00 ,  H02M3/158

CPC classification number: H02J1/001 ,  H02J7/0068 ,  H02J7/345 ,  H02M1/0045 ,  H02M3/158 ,  H02J7/0048

Abstract: Techniques and apparatus for swapping a primary power source (e.g., a main battery) while using a secondary power source (e.g., a backup battery or a supercapacitor) to power a portable device. One example integrated circuit (IC) for power management generally includes a first power supply node; a second power supply node; a first port for coupling to a primary power source; a first switch coupled between the first power supply node and the first port; a second port for coupling to a secondary power source; a second switch coupled between the first power supply node and the second port; and a third switch coupled between the first and second power supply nodes. For certain aspects, the IC also includes a third power supply node, a voltage regulator coupled between the first and third power supply nodes, and a fourth switch coupled between the second and third power supply nodes.