TRANSISTOR CONTROL CIRCUIT
    191.
    发明公开

    公开(公告)号:US20240088885A1

    公开(公告)日:2024-03-14

    申请号:US18370582

    申请日:2023-09-20

    CPC classification number: H03K17/0812 H02P27/04

    Abstract: A control circuit for controlling a first transistor includes a diode for suppressing transient voltages. A cathode of the diode is coupled to a first conduction terminal of the first transistor, and an anode of the diode is coupled to a first node. A first resistor is coupled between the first node and a control terminal of the first transistor. A second transistor has a control terminal coupled to the first node, a first conduction terminal configured to receive a first supply voltage, and a second conduction terminal coupled to the control terminal of the first transistor.

    Impedance matching
    193.
    发明授权

    公开(公告)号:US11909427B2

    公开(公告)日:2024-02-20

    申请号:US18113796

    申请日:2023-02-24

    CPC classification number: H04B1/0458 H03H7/38 H04B1/18

    Abstract: A circuit device includes a directional coupler with a first port receiving a radiofrequency signal, a second port outputting a signal in response to signal received by the first port, and a third port outputting a signal in response to a reflection of the signal at the second port. An impedance matching network is connected between the second port and an antenna. The impedance matching network includes fixed inductive and capacitive components and a single variable inductive or capacitive component. A diode coupled to the third port of the coupler generates a voltage at a measurement terminal which is processed in order to select and set the inductance or capacitance value of the variable inductive or capacitive component.

    RECTIFYING ELEMENT AND VOLTAGE CONVERTER COMPRISING SUCH A RECTIFYING ELEMENT

    公开(公告)号:US20230275526A1

    公开(公告)日:2023-08-31

    申请号:US18144639

    申请日:2023-05-08

    Inventor: Frederic GAUTIER

    CPC classification number: H02M7/219 H02M7/5387 G05F3/20 H02M7/217 H02M1/0032

    Abstract: A rectifying element includes a MOS transistor series-connected with a Schottky diode. A bias voltage is applied between the control terminal of the MOS transistor and the terminal of the Schottky diode opposite to the transistor. A pair of the rectifying elements are substituted for diodes of a rectifying bridge circuit. Alternatively, the control terminal bias is supplied from a cross-coupling against the Schottky diodes. In another implementation, the Schottky diodes are omitted and the bias voltage applied to control terminals of the MOS transistors is switched in response to cross-coupled divided source-drain voltages of the MOS transistors. The circuits form components of a power converter.

    CAVITY FORMING METHOD
    198.
    发明公开

    公开(公告)号:US20230215733A1

    公开(公告)日:2023-07-06

    申请号:US18148329

    申请日:2022-12-29

    CPC classification number: H01L21/3086 H01L21/30604

    Abstract: The present description concerns a method of forming a cavity in a substrate comprising: the forming of an etch mask comprising, opposite the location of the cavity, a plurality of sets of openings, the ratio between the openings and the mask of each set being selected according to the desired profile of the cavity opposite the surface of the mask having the set inscribed therein; and the wet etching of the substrate through the openings.

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