公开(公告)号：US20180184493A1

公开(公告)日：2018-06-28

申请号：US15887698

申请日：2018-02-02

Applicant: STMicroelectronics S.r.l.

Inventor： Giovanni Gritti

IPC: H05B33/08 ,  H02M3/335 ,  H02M1/36 ,  H02M1/42 ,  H02M1/08 ,  H02M1/00

CPC classification number: H05B33/0815 ,  H02M1/08 ,  H02M1/36 ,  H02M1/4258 ,  H02M3/33507 ,  H02M2001/0009 ,  H02M2001/0022 ,  H02M2001/0025

Abstract: A method controls a power switch and senses a primary current through a transformer primary winding coupled to the power switch and deactivates the switch responsive to the sensed primary current reaching a current sensed reference. A demagnetization mode is initiated responsive to deactivating the power switch. During this mode a first capacitance is charged with a first charging current to generate the current sensed reference. The first charging current is based on a bias signal. A second capacitance is charged with a second charging current to generate the bias signal. The second charging current is based on a compensation signal. A third charging current generates a comparison signal, the third charging current based on the current sensed reference. The compensation signal is based on a difference between the comparison signal and an internal reference and the power switch activated based on a secondary current in a secondary transformer winding.

公开(公告)号：US20180172810A1

公开(公告)日：2018-06-21

申请号：US15610101

申请日：2017-05-31

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Stefano Corona ,  Matteo Albertini ,  Francesco D'Angelo

IPC: G01S7/524 ,  G01S15/93 ,  G01S7/527 ,  G01S15/10

CPC classification number: G01S7/524 ,  G01S7/523 ,  G01S7/527 ,  G01S15/102 ,  G01S15/108 ,  G01S15/93

Abstract: A method of detecting objects includes transmitting toward an object a first acoustic signal including a first set of pulses including a first number of pulses, and checking if a first echo signal resulting from reflection of the first acoustic signal is received with an intensity reaching an echo detection threshold. If the intensity of the first echo signal reaches the echo detection threshold, the distance to the object is calculated as a function of the time delay of the first echo signal. If the intensity of the first echo signal fails to reach the echo detection threshold, one or more further acoustic signals are transmitted including a set of pulses wherein the number of pulses is increased with respect to the number of pulses in said first acoustic signal.

公开(公告)号：US10003956B2

公开(公告)日：2018-06-19

申请号：US15724500

申请日：2017-10-04

Applicant: STMicroelectronics S.r.l.

Inventor： Amedeo Veneroso

IPC: H04W8/18 ,  H04B1/3816 ,  H04W8/20

CPC classification number: H04W8/183 ,  H04B1/3816 ,  H04W4/60 ,  H04W8/205

Abstract: A method is provided for performing a management of a multi-subscription SIM module. The multi-subscription SIM module includes at least one memory adapted to store at least a first and a second profile associated with a respective first and a second mobile network operator. The memory includes a volatile portion. The operation of storing includes installing or updating profiles by downloading one or more downloaded profiles from a remote host. The management includes selecting one or more enabled profiles including an application to be executed and allocating a partition of the volatile portion of the memory to the one or more enabled profile.

公开(公告)号：US10002672B2

公开(公告)日：2018-06-19

申请号：US15795552

申请日：2017-10-27

Applicant: STMicroelectronics S.r.l.

Inventor： Giovanni Campardo ,  Salvatore Polizzi

IPC: G11C7/00 ,  G11C16/28 ,  G11C16/32 ,  G11C16/26 ,  G11C11/56 ,  G11C8/14 ,  G11C8/08 ,  G11C7/22 ,  G11C7/14 ,  G11C16/24 ,  G11C16/08 ,  G11C7/06

CPC classification number: G11C16/28 ,  G11C7/062 ,  G11C7/14 ,  G11C7/227 ,  G11C8/08 ,  G11C8/14 ,  G11C11/5642 ,  G11C16/08 ,  G11C16/24 ,  G11C16/26 ,  G11C16/32

Abstract: A memory device includes a memory array with memory cells arranged in rows and columns and with word lines and bit lines. A dummy structure includes a dummy row of dummy cells and a dummy word line. A first pre-charging stage biases a word line of the memory array. An output stage includes a plurality of sense amplifiers. Each sense amplifier generates a corresponding output signal representing a datum stored in a corresponding memory cell pre-charged by the first pre-charging stage. A second pre-charging stage biases the dummy word line simultaneously with the word line biased by the first pre-charging stage. The output stage includes an enable stage, which detects a state of complete pre-charging of an intermediate dummy cell.

公开(公告)号：US09990329B2

公开(公告)日：2018-06-05

申请号：US14969642

申请日：2015-12-15

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Daniele Mangano ,  Riccardo Condorelli ,  Gaetano Distefano

IPC: G06F13/42 ,  G06F13/40

CPC classification number: G06F13/4282 ,  G06F13/4027 ,  G06F13/4291

Abstract: A method that is for operating a serial protocol interface includes a communication device that is configured to exchange data over a communication link by sending output data on the communication link, and receiving input data on the communication link. The input data is synchronous with a clock signal generated at the communication device and propagated over the communication link. The method also includes initializing operation by sending the output data on the communication link at a first data rate, detecting a signal transition in the input data received on the communication link, and exchanging data over the communication link at a second data rate when the signal transition is detected, the second data rate being higher than the first data, with the exchanging of data at the second data rate synchronized as a function of the signal transition.

公开(公告)号：US20180151231A1

公开(公告)日：2018-05-31

申请号：US15607636

申请日：2017-05-29

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics (Rousset) SAS

Inventor： Francesca Grande ,  Francesco La Rosa ,  Gianbattista Lo Giudice ,  Giovanni Matranga

IPC: G11C16/16 ,  G11C16/34

CPC classification number: G11C16/16 ,  G11C16/26 ,  G11C16/3445

Abstract: A method can be used for reducing a memory operation time in a non-volatile memory device having a memory array with a number of memory cells. The method includes performing a first execution of the memory operation on a set of memory cells by applying a first biasing configuration, storing information associated to the first biasing configuration, and performing a second execution, subsequent to the first execution, of the memory operation on the same set of memory cells by applying a second biasing configuration that is determined according to the stored information associated to the first biasing configuration.

公开(公告)号：US20180151223A1

公开(公告)日：2018-05-31

申请号：US15639540

申请日：2017-06-30

Applicant: STMicroelectronics S.r.l.

Inventor： Cesare Torti ,  Fabio Enrico Carlo Disegni ,  Davide Manfre' ,  Massimo Fidone

IPC: G11C13/00 ,  H01L27/24

CPC classification number: G11C13/0028 ,  G11C8/08 ,  G11C13/0004 ,  G11C13/0038 ,  G11C13/004 ,  G11C13/0069 ,  H01L27/2436 ,  H01L29/7841 ,  H01L45/06

Abstract: A memory device includes an array of phase-change memory cells and a word line. The memory device includes a control circuit, a first pull-up MOSFET and a second pull-up MOSFET connected in series between a first power-supply node set at a first supply voltage and the word line, a first pull-down MOSFET and a second pull-down MOSFET connected in series between the word line and a second power-supply node set at a reference potential, and a biasing MOSFET connected between the word line and a third power-supply node set at a second supply voltage higher than the first supply voltage. The first and second pull-up MOSFETs and the first and second pull-down MOSFETs have breakdown voltages lower than the breakdown voltage of the biasing MOSFET.

公开(公告)号：US20180149859A1

公开(公告)日：2018-05-31

申请号：US15588204

申请日：2017-05-05

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Procopio ,  Giulio Ricotti

IPC: G02B26/08 ,  H01L41/09 ,  H01L41/04 ,  G03B21/00

CPC classification number: G02B26/0858 ,  G03B21/008 ,  H01L41/042 ,  H01L41/09 ,  H04N9/3129

Abstract: A MEMS device includes a fixed supporting body forming a cavity, a mobile element suspended over the cavity, and an elastic element arranged between the fixed supporting body and the mobile element. First, second, third, and fourth piezoelectric elements are mechanically coupled to the elastic element, which has a shape symmetrical with respect to a direction. The first and second piezoelectric elements are arranged symmetrically with respect to the third and fourth piezoelectric elements, respectively. The first and fourth piezoelectric elements are configured to receive a first control signal, whereas the second and third piezoelectric elements are configured to receive a second control signal, which is in phase opposition with respect to the first control signal so that the first, second, third, and fourth piezoelectric elements deform the elastic element, with consequent rotation of the mobile element about the direction.

公开(公告)号：US09979289B2

公开(公告)日：2018-05-22

申请号：US15139828

申请日：2016-04-27

Applicant: STMicroelectronics S.r.l.

Inventor： Agatino Antonino Alessandro ,  Carmelo Alberto Santagati

IPC: H02M3/158 ,  H02M1/08 ,  H03K17/14

CPC classification number: H02M3/158 ,  H02M1/08 ,  H03K17/145 ,  H03K2217/0081

Abstract: A switching converter includes a first electronic switch and a second electronic switch and respective drive circuits for switching on and switching off alternatively the first and second electronic switches. The drive circuits have a supply line for supplying to them a supply voltage. At least one of the drive circuits has, coupled to it, a capacitor for storing the supply voltage. An electronic-switching circuit is provided for selectively disconnecting the drive circuit from the supply line when the electronic switch driven thereby is switched off. In this mode, the drive circuit is supplied by the voltage stored on the capacitor.

公开(公告)号：US09973095B2

公开(公告)日：2018-05-15

申请号：US15344288

申请日：2016-11-04

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Claudio Adragna ,  Giovanni Gritti

IPC: H02M1/08 ,  H02M3/335 ,  H02M1/36 ,  H02M1/32 ,  H02M1/00

CPC classification number: H02M3/33523 ,  H02M1/08 ,  H02M1/32 ,  H02M1/36 ,  H02M1/42 ,  H02M1/4258 ,  H02M2001/0009 ,  H02M2001/0058

Abstract: The present disclosure is directed to a high power factor quasi resonant converter. The converter converts an AC power line input to a DC output to power a load, generally a string of LEDs. The power input is fed into a transformer being controlled by a power switch. The power switch is driven by a controller having a shaping circuit. The shaping circuit uses a current generator, switched resistor and capacitor to produce a sinusoidal reference voltage signal. The controller drives the power switch based on the voltage reference signal, resulting in a sinusoidal input current in a primary winding of the transformer, resulting in high power factor and low total harmonic distortion for the converter.