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公开(公告)号：US11764731B2
公开(公告)日：2023-09-19
申请号：US18059812
申请日：2022-11-29
申请人： STMicroelectronics (Alps) SAS , STMicroelectronics (Grenoble 2) SAS , STMicroelectronics (Rousset) SAS , STMicroelectronics S.r.l.
CPC分类号： H03B5/36 , G06F1/10 , H03F3/245 , H04B1/0475 , H03B2200/004 , H03F2200/451 , H04B2001/0408
摘要： The present disclosure relates to an electronic device comprising a first capacitor and a quartz crystal coupled in series between a first node and a second node; an inverter coupled between the first and second nodes; a first variable capacitor coupled between the first node and a third node; and a second variable capacitor coupled between the second node and the third node.
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公开(公告)号：US11703897B2
公开(公告)日：2023-07-18
申请号：US16810639
申请日：2020-03-05
发明人： Michel Cuenca , Bruno Gailhard , Daniele Mangano
IPC分类号： G05F1/56
CPC分类号： G05F1/56
摘要： In an embodiment, a method includes: receiving a main supply voltage; generating a first regulated output voltage with a DC-DC converter; providing the main supply voltage to a driver of a control terminal of an output transistor of an LDO; receiving, at an input terminal of the LDO, the first regulated output voltage; generating, at an output terminal of the LDO, a second regulated output voltage from the first regulated output voltage; and when the main supply voltage falls below a predetermined threshold, discharging a capacitor coupled to the input terminal of the LDO by activating a switch coupled to the input terminal of the LDO.
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公开(公告)号：US20230087239A1
公开(公告)日：2023-03-23
申请号：US18059812
申请日：2022-11-29
申请人： STMicroelectronics (Alps) SAS , STMicroelectronics (Grenoble 2) SAS , STMicroelectronics (Rousset) SAS , STMicroelectronics S.r.l.
摘要： The present disclosure relates to an electronic device comprising a first capacitor and a quartz crystal coupled in series between a first node and a second node; an inverter coupled between the first and second nodes; a first variable capacitor coupled between the first node and a third node; and a second variable capacitor coupled between the second node and the third node.
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公开(公告)号：US11906994B2
公开(公告)日：2024-02-20
申请号：US17836524
申请日：2022-06-09
IPC分类号： G06F1/00 , G05F1/46 , G06F1/3296
CPC分类号： G05F1/468 , G06F1/3296
摘要： A voltage regulator is embedded in a circuit intermediate a first node (coupled to a battery) and a second node (supplying power to an external memory). The voltage regulator is activatable in a first mode of operation for startup during which an voltage is applied to the second node that increases towards a supply threshold. In response to the voltage at the second node reaching the supply threshold, the voltage regulator transitions to a second mode of operation where a programmable regulated voltage (higher than the supply threshold) is applied to the second node. In response to receipt of a low-power operation request, a first high-drive regulator circuitry is deactivated and a second low-power regulator circuitry is activated to provide a third mode of operation at low power.
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公开(公告)号：US11533019B2
公开(公告)日：2022-12-20
申请号：US17180752
申请日：2021-02-20
申请人： STMicroelectronics (Grenoble 2) SAS , STMicroelectronics S.r.l. , STMicroelectronics (Rousset) SAS , STMicroelectronics (Alps) SAS
摘要： The present disclosure relates to an electronic device comprising a first capacitor and a quartz crystal coupled in series between a first node and a second node; an inverter coupled between the first and second nodes; a first variable capacitor coupled between the first node and a third node; and a second variable capacitor coupled between the second node and the third node.
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公开(公告)号：US20210278868A1
公开(公告)日：2021-09-09
申请号：US16810639
申请日：2020-03-05
发明人： Michel Cuenca , Bruno Gailhard , Daniele Mangano
IPC分类号： G05F1/56
摘要： In an embodiment, a method includes: receiving a main supply voltage; generating a first regulated output voltage with a DC-DC converter; providing the main supply voltage to a driver of a control terminal of an output transistor of an LDO; receiving, at an input terminal of the LDO, the first regulated output voltage; generating, at an output terminal of the LDO, a second regulated output voltage from the first regulated output voltage; and when the main supply voltage falls below a predetermined threshold, discharging a capacitor coupled to the input terminal of the LDO by activating a switch coupled to the input terminal of the LDO.
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公开(公告)号：US10985736B2
公开(公告)日：2021-04-20
申请号：US16894640
申请日：2020-06-05
摘要： An embodiment device comprises a processing circuit and IP circuitry coupled to a power supply line, wherein the IP circuitry has an IP circuitry supply threshold for IP circuitry operation. A supply monitor circuit is coupled to the power supply line to sense the voltage on the power supply line and to switch the processing circuit to a low-power mode as a result of a drop in the voltage on the power supply line. The supply monitor circuit comprises a threshold setting node and is configured to be deactivated as a result of the voltage on the power supply line dropping below a deactivation threshold level set at the threshold setting node. A threshold setting circuit is configured to apply to the threshold setting node of the supply monitor circuit the IP circuitry supply threshold as a result of the processing circuit being in the low-power mode.
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公开(公告)号：US20210265950A1
公开(公告)日：2021-08-26
申请号：US17180752
申请日：2021-02-20
申请人： STMicroelectronics (Grenoble 2) SAS , STMicroelectronics S.r.l. , STMicroelectronics (Rousset) SAS , STMicroelectronics (Alps) SAS
摘要： The present disclosure relates to an electronic device comprising a first capacitor and a quartz crystal coupled in series between a first node and a second node; an inverter coupled between the first and second nodes; a first variable capacitor coupled between the first node and a third node; and a second variable capacitor coupled between the second node and the third node.
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公开(公告)号：US10958150B2
公开(公告)日：2021-03-23
申请号：US16414461
申请日：2019-05-16
发明人： Michel Cuenca , Bruno Gailhard , Daniele Mangano
摘要： An electronic circuit includes a switched-mode power supply and a linear voltage regulation circuit having an input stage, a first output stage, and a second output stage. A first load is capable of being powered either by the switched-mode power supply in series with the regulation circuit or by the regulation circuit without the switched-mode power supply.
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公开(公告)号：US20210357015A1
公开(公告)日：2021-11-18
申请号：US16874020
申请日：2020-05-14
IPC分类号： G06F1/3234 , H03K3/037
摘要： A power-saving system includes a retention memory element for a retained peripheral that is set to a logic state during an operational-power mode and maintains the logic state during an enhanced power-saving mode. The power-saving system also includes a non-retention memory element for a non-retained peripheral that is set to a logic state during the operational-power mode of the power-saving system; and a controller that instructs the retention memory element to maintain its logic state while in an enhanced power-saving mode.
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