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公开(公告)号：US11870348B1
公开(公告)日：2024-01-09
申请号：US17406429
申请日：2021-08-19
发明人： Narendra Nath Gaddam , Trey Roessig
CPC分类号： H02M3/1582 , G05F1/62
摘要： An integrated circuit device includes: an input stage configured to receive first and a second input signals and generate a first voltage based on the first input signal and generate a second voltage based on the second input signal; an amplification stage configured to generate a first output current based on the first voltage and a second output current based on the second voltage; a bias stage configured to generate a bias voltage for the amplification stage based on the first and second voltages; a load stage configured to output a differential voltage signal proportional to a current through a device for which current is sensed based on a comparison of the first and second output currents; and an output stage configured to output a signal to control a duty cycle of the device for which current is sensed.
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2.发明公开公开(公告)号：US20230236617A1
公开(公告)日：2023-07-27
申请号：US18194857
申请日：2023-04-03
CPC分类号： G05F1/62 , H04B3/548 , H04M19/008 , H04W52/00 , H04W52/0206 , Y02D30/70
摘要： Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.
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公开(公告)号：US11709512B2
公开(公告)日：2023-07-25
申请号：US17572664
申请日：2022-01-11
申请人： Apple Inc.
CPC分类号： G05F1/46
摘要： An apparatus includes hardware circuits, a front-end power supply, voltage regulators, and control circuitry. The front-end power supply generates electrical power for the hardware circuits. The front-end power supply includes power stages that generate portions of electrical power and are activated and deactivated independently. The voltage regulators are connected to an output of the front-end power supply and provide adjustable operating voltages to the hardware circuits. The control circuitry controls the voltage regulators to supply the adjustable operating voltages responsively to requests from the hardware circuits, compares the adjustable operating voltages to settings that are specified as safe for provisioning by a predefined partial number of the power stages of the front-end power supply, and adaptively activates and deactivates the power stages, including ensuring that a number of active power stages is set to the predefined partial number only while the operating voltages match the safe settings.
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公开(公告)号：US11669118B2
公开(公告)日：2023-06-06
申请号：US16994809
申请日：2020-08-17
CPC分类号： G05F1/62 , H04B3/548 , H04M19/008 , H04W52/00 , H04W52/0206 , Y02D30/70
摘要： Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.
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公开(公告)号：US11662759B2
公开(公告)日：2023-05-30
申请号：US16931747
申请日：2020-07-17
CPC分类号： G05F1/62 , H04B3/548 , H04M19/008 , H04W52/00 , H04W52/0206 , Y02D30/70
摘要： Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.
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公开(公告)号：US11500404B2
公开(公告)日：2022-11-15
申请号：US17140754
申请日：2021-01-04
摘要： The present disclosure relates to circuitry for selecting a bias voltage to output at a bias voltage output node of the circuitry. The circuitry comprises a first circuit node configured to receive a first voltage from a first, unregulated, voltage source and a second circuit node configured to receive a second voltage from a second, regulated, voltage source. A switch arrangement configured to selectively couple the bias voltage output node to the first circuit node or the second circuit node is also provided.
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公开(公告)号：US11256277B2
公开(公告)日：2022-02-22
申请号：US16163958
申请日：2018-10-18
摘要： Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.
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公开(公告)号：US11133745B2
公开(公告)日：2021-09-28
申请号：US16792085
申请日：2020-02-14
发明人： Daniel Chieng , Michael Payne , David Beck , Adam Vaughn
摘要： The present embodiments allow multiphase buck controllers to be able to detect Power-on-Reset (POR) automatically and subsequently reboot the system and reconfigure the system as a single or multi-rail system. Some embodiments use an onboard bus that can communicate between controllers. In these and other embodiments, the system is able to recover automatically from a power failure afflicting any or all of the controllers. Embodiments are applicable to flexible plug-and-play modular digital buck regulation applications.
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公开(公告)号：US20210144635A1
公开(公告)日：2021-05-13
申请号：US17156247
申请日：2021-01-22
摘要： In one embodiment, a method is provided. The method comprises: setting a first voltage level provided to a cable; operating a radio, coupled to the cable, with constant power consumption; measuring a first current level provided to the cable; setting a second voltage level provided to the cable; measuring a second current level provided to the cable; and determining a first resistance of the cable using the first and second voltage and current levels.
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公开(公告)号：US20210103309A1
公开(公告)日：2021-04-08
申请号：US17100702
申请日：2020-11-20
摘要： Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.
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