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公开(公告)号：US11258443B2
公开(公告)日：2022-02-22
申请号：US16917215
申请日：2020-06-30
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
IPC: H03K17/687 , H02M1/08 , H03K19/20
Abstract: 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.
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公开(公告)号：US20210409018A1
公开(公告)日：2021-12-30
申请号：US16917215
申请日：2020-06-30
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
IPC: H03K17/687 , H02M1/08
Abstract: 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.
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公开(公告)号：US12191776B2
公开(公告)日：2025-01-07
申请号：US18533486
申请日：2023-12-08
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Jie Lu , Brandon Pierquet , Anish Prasai
Abstract: 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.
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公开(公告)号：US20240258803A1
公开(公告)日：2024-08-01
申请号：US18162346
申请日：2023-01-31
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet , Matteo Telli
CPC classification number: H02J7/0019 , H02J50/12 , H02M1/0058 , H02M1/0095 , H02M3/33571
Abstract: A battery charging system can include a stacked half bridge rectifier (“SHBR”) having an upper half bridge (“UHB”) and a lower half bridge (“LHB”); a blocking capacitor and a winding coupled between a midpoint of the UHB and a midpoint of the LHB; a battery coupled across the SHBR; and control circuitry that can selectively operate the SHBR as a switched capacitor converter (“SCC”) using the blocking capacitor as a flying capacitor by alternating between: a first switching state in which lower switches of the UHB and LHB are closed while upper switches of the UHB and LHB are opened; and a second switching state in which upper switches of the UHB and LHB are closed. The battery can further include first and second series-connected batteries having a midpoint coupled to a midpoint of the SHBR, and the SCC can operate as a balancer to equalize charge between the batteries.
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公开(公告)号：US11996711B2
公开(公告)日：2024-05-28
申请号：US17032721
申请日：2020-09-25
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
CPC classification number: H02J7/0014 , H02J3/38 , H02J7/04 , H02M7/219
Abstract: A charger for a battery power system can include first and second switching bridges with inputs couplable to an AC source, at least one transformer having two or more primary windings (connected in series and coupled to the switching bridges) and at least two secondary windings, and second rectifier/chargers, each coupled to at least one of the secondary windings and couplable to at least one battery. The switching bridges may be respectively operable during positive and negative half cycles of the AC source to deliver an AC voltage to the transformer. The rectifier/chargers may be operable in a first mode to receive an AC voltage from the transformer and deliver a DC voltage for charging the respective battery. In some multi-battery embodiments, the rectifier/chargers may also be operable in a second mode to deliver an AC voltage from a respective battery to the transformer to balance charge between the batteries.
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Patent Agency Ranking
公开(公告)号：US20240146207A1
公开(公告)日：2024-05-02
申请号：US18533486
申请日：2023-12-08
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Jie Lu , Brandon Pierquet , Anish Prasai
CPC classification number: H02M5/2932 , H02J9/062 , H02M1/083 , H02M3/33584 , H02M7/797 , H02J3/32
Abstract: 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.
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公开(公告)号：US11862688B2
公开(公告)日：2024-01-02
申请号：US17387093
申请日：2021-07-28
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet , Derryk C. Davis , Javier Ruiz , John M. Brock
IPC: H01L23/14 , H01L29/20 , H01L23/31 , H01L23/36 , H01L23/522 , H01L23/532 , H01L27/088
CPC classification number: H01L29/2003 , H01L23/14 , H01L23/31 , H01L23/36 , H01L23/5226 , H01L23/53228 , H01L27/088
Abstract: Integrated power modules according to the present technology may include a printed circuit board characterized by a first surface and a second surface. The integrated power modules may include one or more surface-mounted components coupled with the first surface of the printed circuit board. The integrated power modules may include a heat-transfer substrate. The integrated power modules may include one or more gallium nitride transistors coupled between and soldered to each of the second surface of the printed circuit board and the heat-transfer substrate. The integrated power modules may include one or more spacers coupled between and soldered to each of the printed circuit board and the heat-transfer substrate.
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公开(公告)号：US20230208150A1
公开(公告)日：2023-06-29
申请号：US18153744
申请日：2023-01-12
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
CPC classification number: H02J7/0014 , H02M7/219 , H02J3/38 , H02J7/04
Abstract: A charger for a battery power system can include first and second switching bridges with inputs couplable to an AC source, at least one transformer having two or more primary windings (connected in series and coupled to the switching bridges) and at least two secondary windings, and second rectifier/chargers, each coupled to at least one of the secondary windings and couplable to at least one battery. The switching bridges may be respectively operable during positive and negative half cycles of the AC source to deliver an AC voltage to the transformer. The rectifier/chargers may be operable in a first mode to receive an AC voltage from the transformer and deliver a DC voltage for charging the respective battery. In some multi-battery embodiments, the rectifier/chargers may also be operable in a second mode to deliver an AC voltage from a respective battery to the transformer to balance charge between the batteries.
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公开(公告)号：US20230089299A1
公开(公告)日：2023-03-23
申请号：US17457379
申请日：2021-12-02
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Jie Lu , Brandon Pierquet , Anish Prasai
Abstract: 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.
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公开(公告)号：US20230089072A1
公开(公告)日：2023-03-23
申请号：US17457377
申请日：2021-12-02
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Jie Lu , Brandon Pierquet , Anish Prasai
Abstract: 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.
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