公开(公告)号：US11942113B2

公开(公告)日：2024-03-26

申请号：US18166291

申请日：2023-02-08

Applicant: STMICROELECTRONICS KK ,  STMICROELECTRONICS S.r.l.

Inventor： Marco Ferrari ,  Davide Betta ,  Diego Tognoli ,  Roberto Trabattoni

IPC: G11B5/54 ,  G11B5/48 ,  G11B21/08

CPC classification number: G11B21/083

Abstract: In accordance with an embodiment, a hard disk drive includes voice coil motors (VCMs) coupled to respective control units configured to drive retract an operation of the VCMs in the hard disk drive. The retract operation of the VCMs includes a sequence of retract steps. The control units are allotted respective time slots for communication over a communication line with the respective time slots synchronized via the common clock line, and are configured to drive sequences of retract steps of the VCMs in the hard disk drive in a timed relationship.

公开(公告)号：US20180191341A1

公开(公告)日：2018-07-05

申请号：US15396964

申请日：2017-01-03

Applicant: STMicroelectronics KK

Inventor： Luca Bartolomeo ,  Kazuo Eguchi ,  Giuseppe Davide Bruno

IPC: H03K17/16 ,  H01L29/16 ,  H01L29/78 ,  H03K17/10 ,  H03K3/313

CPC classification number: H03K17/161 ,  H01L29/1608 ,  H01L29/78 ,  H03K3/313 ,  H03K17/102 ,  H03K17/162 ,  H03K17/691 ,  H03K2217/0063 ,  H03K2217/0072

Abstract: A level shifting circuit has an input configured to receive an input signal, wherein the input signal has symmetrical maximum and minimum voltages. The level shifting circuit further includes an output configured to provide an output signal, wherein the output signal has asymmetrical maximum and minimum voltages. The output signal is generated in response to the input signal. The output signal is applied to drive a gate terminal of a SiC MOSFET.

公开(公告)号：US20110221580A1

公开(公告)日：2011-09-15

申请号：US12723011

申请日：2010-03-12

Applicant: Sebastien Marsanne ,  Francesco Doddo ,  Hong-Shao Chen ,  Romel Estomata

Inventor： Sebastien Marsanne ,  Francesco Doddo ,  Hong-Shao Chen ,  Romel Estomata

IPC: G08C19/00

CPC classification number: G08C17/00 ,  H02J9/005 ,  H02J17/00 ,  H02J50/12 ,  H04B5/0037 ,  H04B5/0081

Abstract: Power consumption of an appliance under remote control is minimized. The appliance receives a wireless energy burst having a wireless magnetic resonating power coupling characteristic transmitted by a remote control device. The appliance is powered up from a powered-down state to a standby mode if the appliance is in the powered-down state when the wireless energy burst is received and the energy burst is of sufficient energy to activate a switched mode power supply of the appliance.

Abstract translation: 远程控制下的设备的功耗最小化。 该设备接收具有由遥控设备发送的无线磁共振功率耦合特性的无线能量突发。 如果在接收到无线能量突发时设备处于掉电状态，并且能量突发具有足够的能量来激活设备的交换模式电源，则设备从掉电状态上电到待机模式 。

公开(公告)号：US07274176B2

公开(公告)日：2007-09-25

申请号：US10999358

申请日：2004-11-29

Applicant: Masaaki Mihara

Inventor： Masaaki Mihara

IPC: G05F1/59

CPC classification number: G05F1/575

Abstract: A voltage regulator includes first and second transistors arranged in parallel and configured to regulate current flow to an output node, and a sensing circuit configured to sense a voltage level at the output node and provide a signal proportional thereto. the regulator also includes a control circuit configured to receive the signal from the sensing circuit and provide control signals at control terminals of the first and second transistors such that voltage at the output node is maintained substantially at a selected level. The control circuit further configured to hold the second transistor in an off state while a demand for current at the output node remains below an output threshold. The second transistor is configured to control a large portion of load current above the output threshold. The regulator may also include a current bypass circuit configured to shunt leakage current of the second transistor to ground, away from the sensing circuit.

Abstract translation: 电压调节器包括并联布置并被配置成调节到输出节点的电流的第一和第二晶体管，以及被配置为感测输出节点处的电压电平并提供与其成比例的信号的感测电路。 调节器还包括控制电路，其被配置为从感测电路接收信号，并在第一和第二晶体管的控制端提供控制信号，使得输出节点处的电压基本维持在选定的电平。 所述控制电路还被配置为将所述第二晶体管保持在断开状态，同时对所述输出节点处的电流的需求保持在输出阈值以下。 第二晶体管被配置为控制大于输出阈值的大部分负载电流。 调节器还可以包括电流旁路电路，其配置成将第二晶体管的漏电流分流到接地，远离感测电路。