公开(公告)号：US10587136B2

公开(公告)日：2020-03-10

申请号：US15643412

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Vinayakumar Prakash Mallapur ,  Anand Kudari ,  Prashanth Pai

IPC: H02J7/00 ,  H02J1/10 ,  H02J7/04

Abstract: Methods, devices, apparatuses, and systems may provide integrated combined current sensing for parallel charging architecture. In one embodiment a charger includes a first charging device that includes a switching circuit having a switching output configured to be coupled to a first terminal of an inductive element. The first charging device further includes a charging terminal configured to couple a second terminal of the inductive element to a battery terminal to provide a first power source to charge a battery coupled to the battery terminal. The first charging device further includes a charge current sense element coupled between the charging terminal and the second terminal of the inductive element. The charge current sense element is configured to sense a charge current at the charging terminal. The circuit further includes a second charging device that includes a second power source coupled to the second terminal such that the charge current comprises current from the first charging device and the second charging device.

公开(公告)号：US20190013685A1

公开(公告)日：2019-01-10

申请号：US15643412

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Vinayakumar Prakash Mallapur ,  Anand Kudari ,  Prashanth Pai

IPC: H02J7/00

CPC classification number: H02J7/0052 ,  H02J1/10 ,  H02J7/0027 ,  H02J7/0045 ,  H02J7/0055 ,  H02J7/0072 ,  H02J7/045 ,  H02J2007/0062

Abstract: Methods, devices, apparatuses, and systems may provide integrated combined current sensing for parallel charging architecture. In one embodiment a charger includes a first charging device that includes a switching circuit having a switching output configured to be coupled to a first terminal of an inductive element. The first charging device further includes a charging terminal configured to couple a second terminal of the inductive element to a battery terminal to provide a first power source to charge a battery coupled to the battery terminal. The first charging device further includes a charge current sense element coupled between the charging terminal and the second terminal of the inductive element. The charge current sense element is configured to sense a charge current at the charging terminal. The circuit further includes a second charging device that includes a second power source coupled to the second terminal such that the charge current comprises current from the first charging device and the second charging device.

公开(公告)号：US09935546B2

公开(公告)日：2018-04-03

申请号：US15012619

申请日：2016-02-01

Applicant: QUALCOMM Incorporated

Inventor： Srikanth Jatavallabhula ,  Anand Kudari ,  Arvindh Rajasekaran

IPC: G05F1/00 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M2001/0009 ,  H02M2001/0045 ,  H02M2001/008

Abstract: Power supplies combining a switching-mode power supply in parallel with a current source can improve maximum load current capability. The current source can be turned on, or the amount of current supplied by the current source increased, when there is a heavy load current demand, for example, when the load current demand is more than the current rating of the switching-mode power supply. The duty cycle of the output stage of the switching-mode power supply can be used to determine the load current demand. The current source may increase the maximum output current of the power supply beyond the maximum output current of the switching-mode power supply. For example, the current source may add 0.5 A to the current capability of a 2.5 A switching-mode power supply.