利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

18 条记录 (耗时 0.015 秒)

    FAST ACTIVE CLAMP FOR POWER CONVERTERS
    2.
    发明申请
    FAST ACTIVE CLAMP FOR POWER CONVERTERS 有权

    公开(公告)号：US20220131539A1

    公开(公告)日：2022-04-28

    申请号：US17647220

    申请日：2022-01-06

    申请人： Apple Inc.

    发明人： Ashish K. Sahoo ,  Brandon Pierquet

    IPC分类号： H03K17/687 ,  H02M1/08

    摘要： A switching system can include a main switching device configured to switch a voltage, a gate driver having an output coupled to a drive terminal of the main switching device and configured to deliver a drive signal to the main switching device, and a clamp circuit. The clamp circuit can be coupled to the drive terminal of the main switching device. The clamp circuit can include a logic gate configured to drive a clamp switching device coupled to and configured to clamp a voltage at the drive terminal of the main switching device. A drive signal of the clamp switching device can be substantially complementary to the main switching device drive signal. The logic gate can provide at least a portion of a delay between switching transitions of the main switching device and switching transitions of the clamp switching device.

    HYBRID CHARGER AND INVERTER SYSTEM
    6.
    发明申请
    HYBRID CHARGER AND INVERTER SYSTEM 有权

    公开(公告)号：US20230089299A1

    公开(公告)日：2023-03-23

    申请号：US17457379

    申请日：2021-12-02

    申请人： Apple Inc.

    发明人： Ashish K. Sahoo ,  Jie Lu ,  Brandon Pierquet ,  Anish Prasai

    IPC分类号： H02M5/293 ,  H02M1/08

    摘要： An AC-AC converter can include a stack of four switches. An input of the converter can be coupled across the stack of four switches, and an output of the converter can be taken from first terminal coupled to a connection point of first and second switches of the stack and a second terminal coupled to a connection point of third and fourth switches of the stack. The converter can further include a controller that operates the switches such that during a positive half cycle of an AC input voltage, the first and second switches are operated with an alternating 50% duty cycle and the third and fourth switches are constantly on, and during the negative half cycle of the AC input voltage, the third and fourth switches are operated with an alternating 50% duty cycle and the first and second switches are constantly on.

    HYBRID CHARGER AND INVERTER SYSTEM
    7.
    发明申请
    HYBRID CHARGER AND INVERTER SYSTEM 有权

    公开(公告)号：US20230089072A1

    公开(公告)日：2023-03-23

    申请号：US17457377

    申请日：2021-12-02

    申请人： Apple Inc.

    发明人： Ashish K. Sahoo ,  Jie Lu ,  Brandon Pierquet ,  Anish Prasai

    IPC分类号： H02M3/335 ,  H02J3/32

    摘要： An electrical system can include an isolated bidirectional converter (having an input couplable to a grid connection and an output couplable to a battery) and an isolated converter (having an input coupled to the input of the isolated bidirectional converter and couplable to the grid connection, with an AC output coupled to a convenience outlet). The electrical system can further include a controller that controls operation of the converters to operate in one of a plurality of modes including a charging mode in which the isolated bidirectional converter operates in a forward direction to charge the battery and the non-isolated converter powers the convenience outlet from the grid connection, and a non-charging mode in which the isolated bidirectional converter operates in a reverse direction to power the non-isolated converter from the battery and the non-isolated converter powers the convenience outlet.

    HYBRID CHARGER AND INVERTER SYSTEM
    8.
    发明申请
    HYBRID CHARGER AND INVERTER SYSTEM 有权

    公开(公告)号：US20230096722A1

    公开(公告)日：2023-03-30

    申请号：US17457376

    申请日：2021-12-02

    申请人： Apple Inc.

    发明人： Ashish K. Sahoo ,  Jie Lu ,  Brandon Pierquet ,  Anish Prasai

    IPC分类号： H02J7/02 ,  H02J3/32 ,  H02M7/797

    摘要： An electrical system can include a first bidirectional AC-DC converter having an input couplable to a grid connection and an output couplable to a battery and a second bidirectional AC-DC converter having an input couplable to the grid connection or a convenience outlet and an output couplable to the battery. The electrical system can further include a controller that controls the first and second converters to operate in a plurality of modes including a two-stage charging mode in which the first and second converters operate in a forward direction to charge the battery, a single-stage charging mode in which the first converter operates in a forward direction to charge the battery and the second converter operates in a reverse direction to power the convenience outlet, and a non-charging mode in which the first converter is idle and the second converter operates in a reverse direction to power the convenience outlet.

    Fast active clamp for power converters
    9.
    发明授权
    Fast active clamp for power converters 有权

    公开(公告)号：US11545973B2

    公开(公告)日：2023-01-03

    申请号：US17647220

    申请日：2022-01-06

    申请人： Apple Inc.

    发明人： Ashish K. Sahoo ,  Brandon Pierquet

    IPC分类号： H03K17/687 ,  H02M1/08 ,  H03K19/20

    摘要： A switching system can include a main switching device configured to switch a voltage, a gate driver having an output coupled to a drive terminal of the main switching device and configured to deliver a drive signal to the main switching device, and a clamp circuit. The clamp circuit can be coupled to the drive terminal of the main switching device. The clamp circuit can include a logic gate configured to drive a clamp switching device coupled to and configured to clamp a voltage at the drive terminal of the main switching device. A drive signal of the clamp switching device can be substantially complementary to the main switching device drive signal. The logic gate can provide at least a portion of a delay between switching transitions of the main switching device and switching transitions of the clamp switching device.