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    Regulating distribution of power in a hard disk drive following a power loss
    1.
    发明授权
    Regulating distribution of power in a hard disk drive following a power loss 有权
    在断电后调节硬盘驱动器中的电源分配

    公开(公告)号：US08854765B2

    公开(公告)日：2014-10-07

    申请号：US13781908

    申请日：2013-03-01

    Applicant: STMicroelectronics Asia Pacific Pte. Ltd. ,  STMicroelectronics S.r.l.

    Inventor： Frederic Bonvin ,  Davide Betta ,  Seng-Chean Hong

    IPC: G11B21/02 ,  G11B33/12

    CPC classification number: G11B19/047 ,  G06F1/30 ,  G11B19/2072 ,  G11B19/2081

    Abstract: Applicant has recognized and appreciated the desirability of powering an actuator using power drawn from one or both of an energy storage device and a spindle motor. In some embodiments, following a loss of external power to a hard disk drive, the hard disk drive (or one or more components thereof) determines whether to provide the actuator with power drawn from the spindle motor or to provide the actuator with power drawn from the spindle motor and from the energy storage device. In some embodiments, the hard disk drive (or the component(s) thereof) may additionally or alternatively determine whether to charge the energy storage device using power drawn from the spindle motor. In some embodiments, the drive may make the determinations based on an amount of power that the actuator is to consume at a time and an amount of power that the spindle motor can provide at the time.

    Abstract translation: 申请人已经认识到并且认识到使用从能量存储装置和主轴电动机中的一个或两个引出的功率来驱动致动器的可取性。 在一些实施例中，在硬盘驱动器的外部电力损失之后，硬盘驱动器（或其一个或多个部件）确定是否向主动器提供从主轴电动机提取的功率，或向致动器提供从 主轴电机和储能装置。 在一些实施例中，硬盘驱动器（或其组件）可另外或替代地确定是否使用从主轴电动机抽取的功率对能量存储装置进行充电。 在一些实施例中，驱动器可以基于执行器一次消耗的功率量和主轴电机在此时可提供的功率量来进行确定。

    VOLTAGE REGULATOR CIRCUIT, CORRESPONDING DEVICE, APPARATUS AND METHOD
    5.
    发明申请
    VOLTAGE REGULATOR CIRCUIT, CORRESPONDING DEVICE, APPARATUS AND METHOD 审中-公开

    公开(公告)号：US20180284826A1

    公开(公告)日：2018-10-04

    申请号：US15928934

    申请日：2018-03-22

    Applicant: STMicroelectronics S.r.l.

    Inventor： Marco Sautto ,  Davide Betta ,  Agostino Mirabelli

    IPC: G05F1/59 ,  G05F1/595 ,  H03F3/45

    CPC classification number: G05F1/59 ,  G05F1/565 ,  G05F1/575 ,  G05F1/595 ,  H03F3/45273

    Abstract: A dual-input, single-output low-dropout voltage regulator circuit includes: a first supply terminal, a second supply terminal and an output terminal, and first and second transistors having current paths coupled respectively between the first and second terminal and the output terminal. First and second drive circuit blocks are coupled respectively to the first and second supply terminals and drive the control terminals of the first and second transistors to provide a regulated voltage at the output terminal from the voltage on the first supply terminal and the second supply terminal. An input circuit block is sensitive to the voltage at the output terminal and is coupled to the first and second drive circuit blocks and configured to activate the second transistor to provide regulated voltage at the output terminal from the second terminal as a result of the voltage at the output terminal becoming lower than a desired value.

    Voltage regulator circuit, corresponding device, apparatus and method
    6.
    发明授权
    Voltage regulator circuit, corresponding device, apparatus and method 有权

    公开(公告)号：US10303193B2

    公开(公告)日：2019-05-28

    申请号：US15928934

    申请日：2018-03-22

    Applicant: STMicroelectronics S.r.l.

    Inventor： Marco Sautto ,  Davide Betta ,  Agostino Mirabelli

    IPC: G05F1/59 ,  H03F3/45 ,  G05F1/595 ,  G05F1/575

    Abstract: A dual-input, single-output low-dropout voltage regulator circuit includes: a first supply terminal, a second supply terminal and an output terminal, and first and second transistors having current paths coupled respectively between the first and second terminal and the output terminal. First and second drive circuit blocks are coupled respectively to the first and second supply terminals and drive the control terminals of the first and second transistors to provide a regulated voltage at the output terminal from the voltage on the first supply terminal and the second supply terminal. An input circuit block is sensitive to the voltage at the output terminal and is coupled to the first and second drive circuit blocks and configured to activate the second transistor to provide regulated voltage at the output terminal from the second terminal as a result of the voltage at the output terminal becoming lower than a desired value.

    CONVERTER CIRCUIT, CORRESPONDING DEVICE AND METHOD
    8.
    发明申请
    CONVERTER CIRCUIT, CORRESPONDING DEVICE AND METHOD 有权

    公开(公告)号：US20220021306A1

    公开(公告)日：2022-01-20

    申请号：US17370674

    申请日：2021-07-08

    Applicant: STMicroelectronics S.r.l.

    Inventor： Maurizio Ricci ,  Marco Sautto ,  Simone Bellisai ,  Eleonora Chiaramonte ,  Luigi Arpini ,  Davide Betta

    IPC: H02M3/158 ,  H02M1/00 ,  H02M1/08

    Abstract: An embodiment circuit comprises first and second output nodes with an inductor arranged therebetween, and first and second switches coupled to opposed ends of the inductor. The switches are switchable between non-conductive and conductive states to control current flow through the inductor and produce first and second output voltages. The current intensity through the inductor is compared with at least one reference value. Switching control circuitry is coupled with the first and second switches, the first and second output nodes, and current sensing circuitry, which is configured to control the switching frequency of the first and second switches as a function of the output voltages and a comparison at the current sensing circuitry. The switching control circuitry is configured to apply FLL-FFWD processing to produce the reference values as a function of a timing signal, targeting maintaining a constant target value for the converter switching frequency.

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