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公开(公告)号：US20220108975A1
公开(公告)日：2022-04-07
申请号：US17492356
申请日：2021-10-01
Applicant: STMICROELECTRONICS S.r.l. , STMICROELECTRONICS S.r.l.
Inventor： Cristina MANOLA , Rosa Lucia TORRISI , Simone RASCUNÀ , Gabriele BELLOCCHI , Annalinda CONTINO , Giuseppe MACCARRONE
IPC: H01L23/00 , H01L23/495 , B22F9/24 , B22F1/00
Abstract: The disclosure is directed to wide band-gap semiconductor devices, such as power devices based on silicon carbide or gallium nitride materials. A power device die is attached to a carrier substrate or a base using sintered silver as a die attachment material or layer. The carrier substrate is, in some embodiments, copper plated with silver. The sintered silver die attachment layer is formed by sintering silver nanoparticle paste under a very low temperature, for example, lower than 200° C. and in some embodiments at about 150° C., and with no external pressures applied in the sintering process. The silver nanoparticle is synthesized through a chemical reduction process in an organic solvent. After the reduction process has completed, the organic solvent is removed through evaporation with a flux of inert gas being injected into the solution.
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公开(公告)号：US12301240B2
公开(公告)日：2025-05-13
申请号：US18326582
申请日：2023-05-31
Applicant: STMicroelectronics S.r.l.
Inventor： David Vincenzoni
Abstract: In an embodiment, a circuit includes cascaded delay units arranged in a chain, each delay unit having an input-to-output delay time, wherein a first delay unit in the chain is configured to receive an input signal for propagating along the delay units in the chain, logic circuitry coupled to delay units in the chain, the logic circuitry configured to generate a clock signal as a logic combination of signals input to and output from the delay units in the chain and feedback circuitry configured to supply to the first delay unit in the chain a feedback signal, the feedback circuitry including a first feedback signal path from a last delay unit in the chain to the first delay unit in the chain and a second feedback signal path from an intermediate delay unit in the chain to the first delay unit in the chain, the intermediate delay unit arranged between the first delay unit in the chain and the last delay unit in the chain.
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公开(公告)号：US12301111B2
公开(公告)日：2025-05-13
申请号：US18089736
申请日：2022-12-28
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro Bertolini , Alberto Cattani , Alessandro Gasparini
Abstract: A supply node receives supply voltage and an output node provides a regulated output voltage to a load. A switching transistor is coupled between the supply and output nodes. The switching transistor is controlled by a drive signal generated by a control circuit to control switching activity. The control circuit includes circuitry to sense a feedback voltage indicative of the regulated output voltage and a comparator generating a comparison logic signal dependent on a comparison of the feedback voltage to a reference. A logic circuit generates a skip signal in response to the comparison logic signal. A counter generates a termination signal. Signal processing circuitry controls the switching activity by asserting the drive signal as a function of the skip signal and the termination signal.
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公开(公告)号：US20250151322A1
公开(公告)日：2025-05-08
申请号：US18915694
申请日：2024-10-15
Applicant: STMicroelectronics S.r.l.
Inventor： Mario Giuseppe SAGGIO , Edoardo ZANETTI
Abstract: A MOSFET device comprising: a structural region, made of a semiconductor material having a first type of conductivity, which extends between a first side and a second side opposite to the first side along an axis; a body region, having a second type of conductivity opposite to the first type, which extends in the structural region starting from the first side; a source region, having the first type of conductivity, which extends in the body region starting from the first side; a gate region, which extends in the structural region starting from the first side, traversing entirely the body region; and a shielding region, having the second type of conductivity, which extends in the structural region between the gate region and the second side. The shielding region is an implanted region self-aligned, in top view, to the gate region.
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公开(公告)号：US12294302B2
公开(公告)日：2025-05-06
申请号：US18458940
申请日：2023-08-30
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Salvatore Tumminaro , Alfio Pasqua , Marco Sammartano
Abstract: A circuit includes an electronic switch configured to be coupled intermediate a high-voltage node and low-voltage circuitry and configured to couple the low-voltage circuitry to the high-voltage node. A voltage-sensing node is configured to be coupled to the high-voltage node via a pull-up resistor. A further electronic switch can be switched to a conductive state to couple the voltage-sensing node and the control node of the electronic switch. A comparator compares a threshold with a voltage at the voltage-sensing node and causes the further electronic switch to switch on in response to the voltage at said voltage-sensing node reaching said threshold. A charge pump coupled to the current flow-path of the electronic switch is activated to the conductive state to pump electric charge from the current flow-path of the electronic switch to the control node of the electronic switch via the further electronic switch switched to the conductive state.
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Patent Agency Ranking
公开(公告)号：US12285534B2
公开(公告)日：2025-04-29
申请号：US17328435
申请日：2021-05-24
Inventor： Roberto La Rosa , Jean Camiolo , Laurent Yvan Louis Jamet
Abstract: A system to sanitize a surface includes an emitter. The emitter of the system to sanitize the surface includes: a light source configured to generate light at a sanitizing wavelength; a receiver configured to receive a wireless signal; and a processing circuit for the emitter configured to turn the light source on, turn the light source off, and adjust an intensity of light generated by the light source depending on the wireless signal. The system to sanitize the surface further includes a sensor. The sensor of the system to sanitize the surface includes: a photoelectric transducer configured to convert light at the sanitizing wavelength to a current; and a processing circuit for the sensor powered by the current and in communication with a transmitter to transmit the wireless signal, the processing circuit for the sensor being configured to control emission of the wireless signal depending on a power level supplied by the current.
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公开(公告)号：US12284248B2
公开(公告)日：2025-04-22
申请号：US18360692
申请日：2023-07-27
Applicant: STMICROELECTRONICS S.r.l.
Abstract: The present disclosure is directed to a device and method for generating and transmitting a TDM signal including both raw data and processed data. The device includes a sensor having a time division multiplexing (TDM) interface. The TDM interface transmits both raw data and processed data in a single TDM signal by reserving one or more slots inside a TDM frame for transmission of the processed data. The sensor also embeds additional information inside a data stream of raw data by repurposing one or more of values of the raw data as an exception code, flag, or another type of notification. The device is also enabled to transmit data, and disabled when not in use in order to conserve power.
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公开(公告)号：US20250126877A1
公开(公告)日：2025-04-17
申请号：US18986599
申请日：2024-12-18
Inventor： Pierpaolo MONGE ROFFARELLO , Isabella MICA , Didier DUTARTRE , Alexandra ABBADIE
IPC: H10D84/03 , H01L21/02 , H01L21/324 , H01L21/763 , H10D84/01 , H10D84/40
Abstract: A substrate made of doped single-crystal silicon has an upper surface. A doped single-crystal silicon layer is formed by epitaxy on top of and in contact with the upper surface of the substrate. Either before or after forming the doped single-crystal silicon layer, and before any other thermal treatment step at a temperature in the range from 600° C. to 900° C., a denuding thermal treatment is applied to the substrate for several hours. This denuding thermal treatment is at a temperature higher than or equal to 1,000° C.
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公开(公告)号：US20250119061A1
公开(公告)日：2025-04-10
申请号：US18989356
申请日：2024-12-20
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandro BERTOLINI , Alberto CATTANI , Stefano RAMORINI , Alessandro GASPARINI
Abstract: A DC-DC converter circuit includes a switching stage with first and second switches, and a control circuit coupled to the switching stage. The control circuit detects a threshold for changing between a synchronous operation mode and an asynchronous operation mode, synchronizes the detected threshold with a beginning of a new switching cycle, applies feed-forward compensation at the beginning of an ON-time period to vary a duty cycle, and generates drive signals to control the switching stage.
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公开(公告)号：US20250111876A1
公开(公告)日：2025-04-03
申请号：US18978540
申请日：2024-12-12
Inventor： Antonino CONTE , Francesco LA ROSA
Abstract: Unclonable function circuitry includes a plurality of pairs of phase-change memory cells in a virgin state, and sensing circuitry coupled to the plurality of pairs of phase-change memory cells in the virgin state. The sensing circuitry identifies a subset of the plurality of pairs of phase-change memory cells in the virgin state based on a reliability mask. Signs of differences of effective resistance values of the identified subset of the plurality of pairs of phase-change memory cells in the virgin state are sensed by the sensing circuitry. The sensing circuitry generates a string of bits based on the sensed signs of differences in the effective resistance values of the identified subset of the plurality of pairs of phase-change memory cells in the virgin state. Processing circuitry coupled to the unclonable function circuitry, in operation, executes one or more operations using the generated string of bits.
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