RECEIVER CIRCUIT, CORRESPONDING SYSTEM AND METHOD

    公开(公告)号:US20240243698A1

    公开(公告)日:2024-07-18

    申请号:US18409527

    申请日:2024-01-10

    CPC classification number: H03F1/0233 H03F3/45475 H03K5/24 H03F2200/105

    Abstract: An envelope detector receives a modulated signal and a differential stage coupled to the detector produces a replica modulated signal compared to produce a PWM-modulated signal having on and off times. A first switch is actuated to short-circuit the input to the envelope detector. A second switch is actuated to feed back to a storage capacitor a signal indicative of the difference between inputs to the differential stage. A third switch is actuated to short-circuit an input to the comparator. Logic circuitry activates the switched to implement offset compensation where: the first, second and third switches are actuated in the absence of the PWM-modulated signal during start-up and standby phases; and the first, second and third switches are actuated during off times of the PWM-modulated signal in a working phase alternating with the start-up/standby phases.

    SOFT START FOR BUCK CONVERTER
    127.
    发明公开

    公开(公告)号:US20240204663A1

    公开(公告)日:2024-06-20

    申请号:US18066765

    申请日:2022-12-15

    Inventor: Antonino Torres

    CPC classification number: H02M3/157 H02M1/08 H02M1/36 H02M3/158

    Abstract: An integrated circuit device includes: a Buck converter; and a control circuit for the Buck converter, which includes: a comparator configured to compare a feedback voltage of the Buck converter with a reference voltage that increases from a first voltage to a second voltage; a pulse-width modulator configured to generate a pulse-width modulated (PWM) signal having a timing-varying pulse width proportional to the reference voltage; an AND gate configured to generate a first control signal by performing a logic AND operation on an output of the comparator and the PWM signal; a pulse generator configured to generate a second control signal by generating a pulse in response to a rising edge in the output of the comparator; and a selection circuit configured to, based on an output voltage of the Buck converter, select the first control signal or the second control signal as a control signal for the Buck converter.

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