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    REVERSE WIRELESS CHARGING
    131.
    发明申请
    REVERSE WIRELESS CHARGING 有权

    公开(公告)号：US20220021242A1

    公开(公告)日：2022-01-20

    申请号：US16931137

    申请日：2020-07-16

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

    Inventor： Jiasheng Wang

    IPC: H02J50/12 ,  H02J7/02

    Abstract: A method and system for operating a power circuit capable of transmitting and receiving wireless power. The method includes determining that the power circuit is operating in receive mode, and, based thereon, having a first equivalent capacitance. The method further includes determining that the power circuit is operating in the transmit mode, and, based thereon, having a second equivalent capacitance. The first equivalent capacitance being different than the second equivalent capacitance.

    FILTERING CIRCUIT FOR PULSE WIDTH MODULATED SIGNAL
    132.
    发明申请
    FILTERING CIRCUIT FOR PULSE WIDTH MODULATED SIGNAL 有权

    公开(公告)号：US20210135660A1

    公开(公告)日：2021-05-06

    申请号：US16991126

    申请日：2020-08-12

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

    Inventor： Hong Wu LIN

    IPC: H03K7/08 ,  H04L27/20

    Abstract: A filtering circuit for filtering a pulse width modulated (PWM) signal includes a D flip-flop having an input terminal configured to be coupled to a logic high signal and having an output terminal coupled to an output terminal of the filtering circuit; and a circuit coupled between an input terminal of the filtering circuit and the D flip-flop, the circuit configured to, for a first pulse of the PWM signal having a duty cycle within a pre-determined range: generate a positive pulse at a clock terminal of the D flip-flop as a clock signal of the D flip-flop; and generate a negative pulse at a reset terminal of the D flip-flop as a reset signal of the D flip-flop, wherein a duration between a rising edge of the positive pulse and a falling edge of the negative pulse is equal to a duration of the first pulse of the PWM signal.

    Deglitching circuit and method in class-D amplifier
    133.
    发明授权
    Deglitching circuit and method in class-D amplifier 有权

    公开(公告)号：US10965263B2

    公开(公告)日：2021-03-30

    申请号：US16354760

    申请日：2019-03-15

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

    Inventor： Ru Feng Du ,  Qi Yu Liu

    IPC: H03F3/217 ,  H03G1/04 ,  H03K19/017 ,  H03K19/20 ,  H03K19/003 ,  H03G3/30 ,  H03K19/096

    Abstract: In an embodiment, a class-D amplifier includes an input terminal configured to receive an input signal; a comparator having an input coupled to the input terminal; a deglitching circuit having an input coupled to an output of the comparator; and a driving circuit having an input coupled to an output of the deglitching circuit. The deglitching circuit includes a logic circuit coupled between the input of the deglitching circuit and the output of the deglitching circuit. The logic circuit is configured to receive a clock signal having the same frequency as the switching frequency of the class-D amplifier.

    AUDIO AMPLIFIER WITH EMBEDDED BUCK CONTROLLER FOR CLASS-G APPLICATION
    134.
    发明申请
    AUDIO AMPLIFIER WITH EMBEDDED BUCK CONTROLLER FOR CLASS-G APPLICATION 审中-公开

    公开(公告)号：US20200169234A1

    公开(公告)日：2020-05-28

    申请号：US16695010

    申请日：2019-11-25

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

    Inventor： XiangSheng Li ,  Ru Feng Du

    IPC: H03G3/30 ,  H03F3/187 ,  H04R3/00 ,  H04R29/00

    Abstract: An audio amplifier includes: a buck controller configured to control an output voltage at a first supply terminal, the output voltage selected from a set including a plurality of output voltages, where the output voltage takes a settling time to settle; a first audio bridge including: a class-AB driver stage coupled to the first supply terminal, and a delay insertion circuit configured to receive a processed digital stream and provide the processed digital stream to the class-AB driver stage a delay time after receiving the processed digital stream, where the delay time is based on the settling time; and an audio amplitude detector configured to detect a first peak amplitude in the first digital audio stream, where the buck controller is configured to select a lowest output voltage from the set that is higher than the first peak amplitude plus a headroom voltage.

    Proximity detector device with interconnect layers and related methods
    135.
    发明授权
    Proximity detector device with interconnect layers and related methods 有权

    公开(公告)号：US10326039B2

    公开(公告)日：2019-06-18

    申请号：US16169522

    申请日：2018-10-24

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

    Inventor： Jing-En Luan

    IPC: G01S17/02 ,  H01L23/00 ,  H01L31/173 ,  G01S17/08 ,  G01S7/481 ,  H01L31/0203 ,  H01L31/0232

    Abstract: A proximity detector device may include a first interconnect layer including a first dielectric layer, and first electrically conductive traces carried thereby, an IC layer above the first interconnect layer and having an image sensor IC, and a light source IC laterally spaced from the image sensor IC. The proximity detector device may include a second interconnect layer above the IC layer and having a second dielectric layer, and second electrically conductive traces carried thereby. The second interconnect layer may have first and second openings therein respectively aligned with the image sensor IC and the light source IC. Each of the image sensor IC and the light source IC may be coupled to the first and second electrically conductive traces. The proximity detector device may include a lens assembly above the second interconnect layer and having first and second lenses respectively aligned with the first and second openings.

    PROXIMITY DETECTOR DEVICE WITH INTERCONNECT LAYERS AND RELATED METHODS
    137.
    发明申请
    PROXIMITY DETECTOR DEVICE WITH INTERCONNECT LAYERS AND RELATED METHODS 审中-公开

    公开(公告)号：US20190058076A1

    公开(公告)日：2019-02-21

    申请号：US16169522

    申请日：2018-10-24

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

    Inventor： Jing-En Luan

    IPC: H01L31/173 ,  H01L31/0232 ,  G01S17/02 ,  H01L31/0203 ,  G01S17/08 ,  H01L23/00 ,  G01S7/481

    Abstract: A proximity detector device may include a first interconnect layer including a first dielectric layer, and first electrically conductive traces carried thereby, an IC layer above the first interconnect layer and having an image sensor IC, and a light source IC laterally spaced from the image sensor IC. The proximity detector device may include a second interconnect layer above the IC layer and having a second dielectric layer, and second electrically conductive traces carried thereby. The second interconnect layer may have first and second openings therein respectively aligned with the image sensor IC and the light source IC. Each of the image sensor IC and the light source IC may be coupled to the first and second electrically conductive traces. The proximity detector device may include a lens assembly above the second interconnect layer and having first and second lenses respectively aligned with the first and second openings.

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