公开(公告)号：US10038427B2

公开(公告)日：2018-07-31

申请号：US13654322

申请日：2012-10-17

Applicant: QUALCOMM Incorporated

Inventor： Jongshick Ahn ,  Eric B Zeisel ,  Cheong Kun ,  Jennifer A Hagstrom

IPC: H02J7/00 ,  H03K3/0233

CPC classification number: H03K3/02335 ,  Y10T307/858

Abstract: Exemplary embodiments are directed to power path switching between multiple charging ports of an electronic device. A device may include a charging port of a plurality of charging ports for coupling to a power supply via an over-voltage protection circuit. The device may further including a comparison unit configured to couple the charging port to the power supply based at least partially on a comparison between a voltage at an input of the over-voltage protection circuit coupled to the charging port with a voltage at the output of the over-voltage protection circuit coupled to the power supply.

公开(公告)号：US09601936B2

公开(公告)日：2017-03-21

申请号：US13852706

申请日：2013-03-28

Applicant: QUALCOMM Incorporated

Inventor： Ricardo T Goncalves ,  Jennifer A Hagstrom

IPC: H02J7/00 ,  H02M1/32 ,  H02M3/158

CPC classification number: H02J7/0052 ,  H02J7/0029 ,  H02J7/0065 ,  H02J2007/0037 ,  H02M1/32 ,  H02M3/1588 ,  Y02B40/90 ,  Y02B70/1466

Abstract: Exemplary embodiments are related to detecting a reverse-boosting operation of a battery charger. A device may include a plurality of switches for receiving an input voltage at an input port and conveying an output voltage. The device may also include a first sensing device coupled to the input port configured to detect if an input current is less than a threshold current. Further, the device may include a second sensing device selectively coupled to the input port to detect if the input voltage is less than a threshold voltage.