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公开(公告)号：US20200228061A1
公开(公告)日：2020-07-16
申请号：US16739287
申请日：2020-01-10
Applicant: STMicroelectronics SA
Inventor： Lionel VOGT
Abstract: An electronic envelope detection circuit includes an input signal detecting circuit having at least one MOS transistor configured to receive a radiofrequency input signal and to deliver an internal signal on the basis of the input signal. The biasing point of the at least one transistor is controlled by the input signal and a control signal. A processing circuit that is coupled to the input signal detecting circuit is configured to deliver a low-frequency output signal on the basis of the internal signal and further deliver the control signal on the basis of the output signal. In operation, the value of the control signal decreases when the average power of the input signal increases, and vice versa.
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公开(公告)号：US20210365059A1
公开(公告)日：2021-11-25
申请号：US17393658
申请日：2021-08-04
Applicant: STMicroelectronics SA
Inventor： Lionel VOGT , Eoin Padraig O HANNAIDH
Abstract: A low-dropout regulator includes a power stage having an output terminal coupled to a load circuit operable in different operating modes in which it receives different output currents. An error amplifier has a first input coupled to a reference voltage and an output coupled to an input terminal of the power stage. A compensation circuit includes a first stage with an RC filter coupled to the input terminal of the power stage, and generating an initial compensation voltage. A second stage includes a first transistor coupled between a supply voltage and a second node, and controlled by a complementary control signal, a high-side capacitor coupled between the second node and ground, and a third transistor coupled between the initial compensation voltage and the second node, and controlled by a control signal representative of the current operating mode of the load circuit.
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公开(公告)号：US20190384338A1
公开(公告)日：2019-12-19
申请号：US16438206
申请日：2019-06-11
Applicant: STMicroelectronics SA
Inventor： Lionel VOGT , Eoin Padraig O HANNAIDH
Abstract: A low-dropout voltage regulation device includes a power stage having an output terminal coupled to a load circuit, the load circuit being operable in a plurality of operating modes. The load circuit is configured to receive a different respective output current when in each of the plurality of operating modes. An error amplifier has an output coupled to an input terminal of the power stage. A compensation circuit is coupled to the input terminal of the power stage and is operable in a plurality of selectable configurations that are respectively tailored to the plurality of operating modes. The plurality of selectable configurations are selectable in response to a control signal representative of a current operating mode of the load circuit.
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公开(公告)号：US20210167729A1
公开(公告)日：2021-06-03
申请号：US17171490
申请日：2021-02-09
Applicant: STMicroelectronics SA
Inventor： Lionel VOGT
Abstract: An electronic envelope detection circuit includes an input signal detecting circuit having at least one MOS transistor configured to receive a radiofrequency input signal and to deliver an internal signal on the basis of the input signal. The biasing point of the at least one transistor is controlled by the input signal and a control signal. A processing circuit that is coupled to the input signal detecting circuit is configured to deliver a low-frequency output signal on the basis of the internal signal and further deliver the control signal on the basis of the output signal. In operation, the value of the control signal decreases when the average power of the input signal increases, and vice versa.
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