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公开(公告)号：US20230299660A1
公开(公告)日：2023-09-21
申请号：US18322177
申请日：2023-05-23
Applicant: Apple Inc.
Inventor： Jie Lu , Brandon Pierquet , Ashish Sahoo
CPC classification number: H02M1/15 , H02M5/293 , H02M7/53 , H02M1/0054
Abstract: A stacked half bridge converter may be configured to provide an AC output voltage from either a DC or an AC input voltage. The switching devices of the converter may be operated according to a plurality of switching sequences, each switching sequence including one or more switching patterns, each switching pattern including one or more switching states of the switching devices. The switching sequences, patterns, and states may be selected to improve operation of the converter, by regulating the voltage at a neutral point of the converter to reduce ripple, increase switching efficiency, protect the switching devices from overvoltages, and the like.
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公开(公告)号：US20230030746A1
公开(公告)日：2023-02-02
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: H01L29/20 , H01L23/31 , H01L23/36 , H01L23/14 , H01L23/522 , H01L23/532 , 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：US20230029981A1
公开(公告)日：2023-02-02
申请号：US17386543
申请日：2021-07-28
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
Abstract: An energy storage system can include a battery, a power converter comprising a first plurality of switching devices coupled to the battery and a second plurality of switching devices coupled between the first plurality of switching devices and an AC power system, and control circuitry that determines whether the AC power system is a single/split phase system or a three phase system and operates the first and second pluralities of switching devices accordingly. The control circuitry can include a microcontroller and a plurality of voltage sensors each configured to monitor a magnitude and a phase of a voltage to allow the control circuitry to determine whether the AC power system is a single/split phase system or a three phase system and whether the AC power system is connected with a line to line or line to neutral fault condition
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公开(公告)号：US20220271646A1
公开(公告)日：2022-08-25
申请号：US17182856
申请日：2021-02-23
Applicant: Apple Inc.
Inventor： Jie Lu , Brandon Pierquet , Ashish K. Sahoo
Abstract: A stacked half bridge converter may be configured to provide an AC output voltage from either a DC or an AC input voltage. The switching devices of the converter may be operated according to a plurality of switching sequences, each switching sequence including one or more switching patterns, each switching pattern including one or more switching states of the switching devices. The switching sequences, patterns, and states may be selected to improve operation of the converter, by regulating the voltage at a neutral point of the converter to reduce ripple, increase switching efficiency, protect the switching devices from overvoltages, and the like.
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Patent Agency Ranking
公开(公告)号：US20220102986A1
公开(公告)日：2022-03-31
申请号：US17032721
申请日：2020-09-25
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
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：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：US10804748B2
公开(公告)日：2020-10-13
申请号：US15817036
申请日：2017-11-17
Applicant: Apple Inc.
Inventor： Hunter H. Wu , Anlang Lu , Brandon Pierquet , Jouya Jadidian
Abstract: Wireless power transmitting equipment may transmit wireless power signals to wireless power receiving equipment. The wireless power transmitting equipment may have a wireless power transmitter coupled to a wireless power transmitting coil. The wireless power receiving equipment may have a wireless power receiving coil coupled to wireless power receiving circuitry such as a rectifier. Foreign object detection coil arrays may be formed from arrays of metal traces on printed circuit substrates that overlap the wireless power transfer coils. Control circuitry in the transmitting equipment and the receiving equipment may monitor signals from foreign object detection circuitry that is coupled to the coil arrays. The foreign object detection circuitry may produce in-phase and quadrature signals that are indicative of whether a foreign object is overlapping a foreign object detection coil array.
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公开(公告)号：US20180166928A1
公开(公告)日：2018-06-14
申请号：US15817036
申请日：2017-11-17
Applicant: Apple Inc.
Inventor： Hunter H. Wu , Anlang Lu , Brandon Pierquet , Jouya Jadidian
CPC classification number: H02J50/60 , H01F27/2885 , H01F38/14 , H02J7/025 , H02J50/10
Abstract: Wireless power transmitting equipment may transmit wireless power signals to wireless power receiving equipment. The wireless power transmitting equipment may have a wireless power transmitter coupled to a wireless power transmitting coil. The wireless power receiving equipment may have a wireless power receiving coil coupled to wireless power receiving circuitry such as a rectifier. Foreign object detection coil arrays may be formed from arrays of metal traces on printed circuit substrates that overlap the wireless power transfer coils. Control circuitry in the transmitting equipment and the receiving equipment may monitor signals from foreign object detection circuitry that is coupled to the coil arrays. The foreign object detection circuitry may produce in-phase and quadrature signals that are indicative of whether a foreign object is overlapping a foreign object detection coil array.
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