公开(公告)号：US10855179B2

公开(公告)日：2020-12-01

申请号：US15471042

申请日：2017-03-28

Applicant: Apple Inc.

Inventor： Khaleel Shaik ,  Di Zhao ,  Sivasankari Krishnanji

IPC: H02J7/02 ,  H02J7/35 ,  H02M3/158 ,  H02J7/00

Abstract: A power converter may be adapted to provide an output voltage from one of two input voltages. The power converter may include two or more buck converters that share a plurality of power converter components and each converts an individual input voltage to the output voltage. The power converter may include any of a variety of charge equalizing components that may be coupled between input terminals and optional input capacitors, which are coupled between the input terminals and ground. The charge equalizing component(s) provide(s) a fast conduction path for the equalization of input voltages and charge/voltage of the optional input capacitors. The charge equalizing component(s) can mitigate large currents created by differential voltages between the input terminals, which currents would otherwise flow through and potentially damage or destroy the power converter's switching devices.

公开(公告)号：US20180198368A1

公开(公告)日：2018-07-12

申请号：US15471042

申请日：2017-03-28

Applicant: Apple Inc.

Inventor： Khaleel Shaik ,  Di Zhao ,  Sivasankari Krishnanji

IPC: H02M3/158 ,  H02J7/02 ,  H02J7/35

CPC classification number: H02M3/158 ,  H02J7/0052 ,  H02J7/0055 ,  H02J7/025 ,  H02J7/35 ,  H02J2007/0059 ,  H02J2007/0062

Abstract: A power converter may be adapted to provide an output voltage from one of two input voltages. The power converter may include two or more buck converters that share a plurality of power converter components and each converts an individual input voltage to the output voltage. The power converter may include any of a variety of charge equalizing components that may be coupled between input terminals and optional input capacitors, which are coupled between the input terminals and ground. The charge equalizing component(s) provide(s) a fast conduction path for the equalization of input voltages and charge/voltage of the optional input capacitors. The charge equalizing component(s) can mitigate large currents created by differential voltages between the input terminals, which currents would otherwise flow through and potentially damage or destroy the power converter's switching devices.