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公开(公告)号：US20220140657A1
公开(公告)日：2022-05-05
申请号：US17576052
申请日：2022-01-14
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yannick GUEDON
Abstract: A bridge rectifier is controlled by control circuitry to act a “regtifier” which both regulates and rectifies without the use of a traditional voltage regulator. To accomplish this, the gate voltages of transistors of the bridge that are on during a given phase may be modulated to dissipate excess power. Gate voltages of transistors of the bridge that are off during the given phase may alternatively or additionally be modulated to dissipate excess power. The regtifier may act as two half-bridges that each power a different voltage converter, with those voltage converters powering a battery. The voltage converters may be switched capacitor voltage converters that switch synchronously with switching of the two half-bridges as they perform rectification.
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公开(公告)号：US20210391752A1
公开(公告)日：2021-12-16
申请号：US17403060
申请日：2021-08-16
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yannick GUEDON
Abstract: A method of wirelessly transmitting power includes: causing a power transmission circuit to transmit, to a master power reception circuit, a portion of power it is capable of transmitting; adjusting operation of a slave power reception unit until a first rectified voltage produced by the master power reception circuit and a second rectified voltage produced by the slave power reception unit are equal; causing the power transmission circuit to transmit additional power to the slave power reception unit, resulting in the first and second rectified voltages being unequal; and adjusting operation of the slave power reception unit until the first and second rectified voltages are again equal. A dummy load is connected to the slave power reception unit prior to causing the power transmission circuit to transmit the additional power, and is disconnected once the first and second rectified voltages are equal.
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公开(公告)号：US20230275502A1
公开(公告)日：2023-08-31
申请号：US18106629
申请日：2023-02-07
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yannick GUEDON
CPC classification number: H02M1/0009 , G01R19/0092 , H02M3/07
Abstract: In a DC-DC converter, a layout is designed to enable utilization the conductive trace connecting the converter output node to an output bump at which the load is attached as a sense resistor. The layout forces the output current down into lower metallization levels of an interconnect layer reaching the converter output node before the output current flows up into this conductive trace and out through the output bump. The conductive trace includes resistive pillars connected in parallel or series between the lower metallization levels and a top metallization layer of the conductive trace, with these resistive pillars being substantially greater in resistance than the lower metallization levels and the top metallization layer of the conductive trace.
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公开(公告)号：US20210034087A1
公开(公告)日：2021-02-04
申请号：US16525696
申请日：2019-07-30
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Qing LIU , Yannick GUEDON
Abstract: A low drop-out (LDO) voltage regulator circuit includes a power transistor having a control terminal configured to receive a control signal and an output terminal coupled to an output node. A current regulation loop senses current flowing through the power transistor and modulates the control signal to cause the power transistor to output a constant current to the output node. A voltage regulation loop senses voltage at the output node and modulates the control signal to cause the power transistor to deliver current to the output node so that an output voltage at the output node is regulated. The current regulation loop includes a bipolar transistor connected to the control terminal of the power transistor, where a base terminal of the bipolar transistor is driven by a signal dependent on a difference between the sensed current flowing through the power transistor and a reference.
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公开(公告)号：US20200169221A1
公开(公告)日：2020-05-28
申请号：US16200975
申请日：2018-11-27
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Li CAI , Yannick GUEDON , Hugo GICQUEL
Abstract: An oscillator circuit includes a first current generator circuit that generates a current complementary to absolute temperature and a second current generator that generates a current proportional to absolute temperature. A temperature slope control circuit adjusts slopes of the current complementary to absolute temperature and the current proportional to absolute temperature in a complementary fashion and adds the current complementary to absolute temperature to the current proportional to absolute temperature after slope control to produce a temperature independent current. A current control circuit adjusts magnitude of the temperature independent current to produce a magnitude adjusted temperature independent current. A current controlled oscillator generates an output signal as a function of the magnitude adjusted temperature independent current.
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Patent Agency Ranking
公开(公告)号：US20220140744A1
公开(公告)日：2022-05-05
申请号：US17576120
申请日：2022-01-14
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yannick GUEDON
Abstract: A bridge rectifier and associated control circuitry collectively form a “regtifier” which rectifies an input time varying voltage and regulates the rectified output voltage produced without the use of a traditional voltage regulator. To accomplish this, the gate voltages of transistors of the bridge rectifier that are on during a given phase may be modulated via analog control (to increase the on-resistance of those transistors) or via pulse width modulation (to turn off those transistors prior to the end of the phase). The transistors of the bridge rectifier that would otherwise be off during a given phase may be turned on to help dissipate excess power and thereby regulate the output voltage. This modulation is based upon both a voltage feedback signal and a current feedback signal.
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公开(公告)号：US20220091164A1
公开(公告)日：2022-03-24
申请号：US17492210
申请日：2021-10-01
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yannick GUEDON , Baris Volkan YILDIRIM , Teerasak LEE
Abstract: A circuit includes a tank capacitor coupled between first and second nodes, and a sense resistor having a first terminal coupled to the first node and a second terminal coupled to a regulator input. A switching circuit has first and second inputs coupled to the first and second terminals of the sense resistor. A gain stage has first and second inputs capacitively coupled to first and second outputs of the switching circuit. An analog-to-digital converter receives the output of the gain stage, and receives first and second differential voltages. A reference voltage generator has a temperature independent current source coupled to source current to a reference resistor, the first differential reference voltage being formed across the reference resistor. The reference resistor and sense resistor are located sufficiently close to one another on a single common substrate such that they remain at substantially a same temperature.
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8.发明申请公开(公告)号：US20210091655A1
公开(公告)日：2021-03-25
申请号：US17011439
申请日：2020-09-03
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Supriya Raveendra HEGDE , Yannick GUEDON
Abstract: A high-side switching transistor of a rectifier circuit is driven by a high-side driver circuit to supply current to an output node. The high-side driver circuit is powered between a capacitive bootstrap node and the output node. A boot charge circuit charges the bootstrap capacitor by supplying current to the bootstrap node. The boot charge circuit includes: a first current path that selectively supplies a first charging current to the bootstrap node when the rectifier circuit is operating in a switching mode; and a second current path that selectively supplies a second charging current to the bootstrap node when the rectifier circuit is operating in a reset mode.
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公开(公告)号：US20210088567A1
公开(公告)日：2021-03-25
申请号：US17016963
申请日：2020-09-10
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yannick GUEDON , Teerasak LEE , Supriya Raveendra HEGDE
Abstract: A receiver circuit includes a rectifier operable in full-, half-synchronous and asynchronous modes. A measurement circuit, with method, provides for real-time power measurement within the rectifier. The measurements are made based on the average output current from the rectifier delivered to the load and measurements sampled over time of the instantaneous voltage at each input/output node of the rectifier. Equivalent resistance in the rectifier is determined from the measurements and power dissipation calculated from the determined equivalent resistance and the average output current. The instantaneous voltages are synchronously captured through high-voltage AC coupling in order to detect the voltage drop across each element of the rectifier. The sensed voltages are amplified in the low voltage domain and converted by a high-speed analog-to-digital converter in order to produce data useful in computing equivalent resistance values. From these values, power dissipation within the rectifier is calculated and real-time equivalent resistance is available.
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10.发明公开公开(公告)号：US20240106344A1
公开(公告)日：2024-03-28
申请号：US18523488
申请日：2023-11-29
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Thanh HA TIEN , Yannick GUEDON
IPC: H02M7/219 , G01R19/165 , H02J50/12 , H02M1/00 , H02M1/32
CPC classification number: H02M7/219 , G01R19/16571 , H02J50/12 , H02M1/0009 , H02M1/32
Abstract: A wireless power-reception system has a bridge rectifier with two high-side and two low-side transistors, linked to input-nodes and sense-resistors. During a first phase, a control circuit activates certain transistors for rectification, producing an output voltage, while modulating a gate voltage of a non-activated low-side transistor to dissipate excess power and regulate the output voltage. During a first given number of occurrences of the first phase, the control circuit determines the current through the low-side transistor having its gate voltage modulated based upon a voltage across a first sense resistor coupled between that low-side transistor and ground. During a second given number of occurrences of the first phase, the control circuit determines the current delivered to the load based upon a voltage across the first sense resistor and a voltage across a second sense resistor coupled between the other low-side transistor and ground.
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