公开(公告)号：US20180138735A1

公开(公告)日：2018-05-17

申请号：US15653264

申请日：2017-07-18

Applicant: QUALCOMM Incorporated

Inventor： Joseph MAALOUF ,  Sumukh SHEVDE ,  Curtis GONG ,  Christian SPORCK ,  Cheong KUN

IPC: H02J7/04 ,  H02J7/02 ,  H02J50/12 ,  H04B5/00

CPC classification number: H02J7/045 ,  H02J7/025 ,  H02J50/12 ,  H02J50/80 ,  H04B5/0037

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for limiting the power drawn by a battery charger based on monitoring of the input voltage and input current supplied to the battery charger from a power supply. In certain aspects, a method generally includes sensing an output voltage of the power supply, wherein the output voltage of the power supply is variable. The method further includes sensing an output current of the power supply. The method further includes providing the output voltage and output current to a battery charger. The method further includes generating a control signal indicative of a scaling of the output current based on a scaling factor, wherein the scaling factor is based on the output voltage. The method further includes providing the control signal to the battery charger to control the output current supplied by the power supply to the battery charger.

公开(公告)号：US20170358953A1

公开(公告)日：2017-12-14

申请号：US15181245

申请日：2016-06-13

Applicant: QUALCOMM Incorporated

Inventor： Colby TRUDEAU ,  Scott WALTER ,  Zhen Ning LOW ,  Joseph Najib MAALOUF ,  Curtis GONG ,  Sumukh Ashok SHEVDE

IPC: H02J50/12 ,  H02J7/04 ,  H02J7/02

CPC classification number: H02J50/12 ,  H02J7/0029 ,  H02J7/025 ,  H02J7/04 ,  H02J50/40 ,  H02J50/80 ,  H04B5/0037

Abstract: Devices and methods for controlling a power supply of a wireless power transmitter based on the request of a wireless power receiver are disclosed. One embodiment provides a wireless power receiver. The wireless power receiver includes a power receiver circuit configured to receive power from a wireless power transmitter at a level sufficient to power or charge a load. The wireless power receiver also includes a processor circuit configured to adjust a level of the received power being provided to the load based on a change in a level of received power to be requested to the wireless power transmitter. The processor circuit is further configured send to the wireless power transmitter the request to change the level of the received power to a first different level.