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公开(公告)号：US20220382309A1
公开(公告)日：2022-12-01
申请号：US17409801
申请日：2021-08-24
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A voltage regulator is provided. The voltage regulator includes a main error amplifier, a first buffer, a second buffer, and multiple main zero compensation loops. The main error amplifier generates a first voltage signal according to a reference voltage signal and a feedback voltage signal. The first buffer provides a second voltage signal according to the first voltage signal. The second buffer provides an output voltage signal according to the second voltage signal. The main zero compensation loops are respectively coupled between an output terminal of the main error amplifier and an output terminal of the first buffer. The main zero compensation loops provide different zero compensations.
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公开(公告)号：US20230155496A1
公开(公告)日：2023-05-18
申请号：US17692022
申请日：2022-03-10
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A charge pump circuit is provided. The charge pump circuit includes a dual-phase charge pump, a first load switch, a second load switch, and a control circuit. The dual-phase charge pump performs a voltage pumping operation on a power source in response to a first clock and a second clock to generate a first pumping voltage at a first node and a second pumping voltage at a second node. The control circuit controls the first load switch in response to a third clock and controls the second load switch in response to a fourth clock. In a period during which the first load switch is turned off, the second load switch transfers the first pumping voltage to an output terminal of the charge pump circuit. In a period during which the second load switch is turned off, the first load switch transfers the second pumping voltage to the output terminal.
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公开(公告)号：US20220382308A1
公开(公告)日：2022-12-01
申请号：US17409735
申请日：2021-08-23
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A voltage regulator is provided. The voltage regulator includes a level shifter, a low-pass filter, and a voltage regulating circuit. The level shifter shifts a voltage value of a reference voltage signal to generate a set voltage signal. The low-pass filter filters the set voltage signal to generate a filtered voltage signal. The voltage regulating circuit outputs an output voltage signal according to the filtered voltage signal and adjusts a voltage value of the filtered voltage signal according to a change of the output voltage signal to stabilize a voltage value of the output voltage signal.
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公开(公告)号：US11909369B2
公开(公告)日：2024-02-20
申请号：US17691094
申请日：2022-03-09
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
IPC分类号： H03H11/04
CPC分类号： H03H11/04
摘要： A low-pass filter circuit is provided. The low-pass filter circuit includes a low-pass filter and a discharging circuit. The low-pass filter receives an input voltage signal through an input terminal of the low-pass filter circuit during a first period, performs a low-pass filter operation on the input voltage signal to generate a filtered voltage signal, and provides the filtered voltage signal to an output terminal of the low-pass filter circuit. The discharging circuit suppresses a leakage current flowing between the output terminal and a reference low voltage in response to the input voltage signal during the first period.
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公开(公告)号：US20230152831A1
公开(公告)日：2023-05-18
申请号：US17717126
申请日：2022-04-10
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A voltage regulation circuit is provided. The voltage regulation circuit includes an error amplifier, an output transistor, a noise extraction circuit, and a stabilization circuit. The error amplifier provides a control signal in response to changes in a feedback voltage. The output transistor receives an input voltage signal, and adjusts an output voltage signal at an output terminal of the voltage regulation circuit in response to the control signal and the input voltage signal. The noise extraction circuit extracts a noise of the input voltage signal to provide a noise current signal. The stabilization circuit converts the noise current signal into a stable signal. In a high operating frequency range, the stabilization circuit provides the stable signal to a control terminal of the output transistor to cancel interference caused by the noise of the input voltage signal.
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公开(公告)号：US11693440B2
公开(公告)日：2023-07-04
申请号：US17409801
申请日：2021-08-24
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A voltage regulator is provided. The voltage regulator includes a main error amplifier, a first buffer, a second buffer, and multiple main zero compensation loops. The main error amplifier generates a first voltage signal according to a reference voltage signal and a feedback voltage signal. The first buffer provides a second voltage signal according to the first voltage signal. The second buffer provides an output voltage signal according to the second voltage signal. The main zero compensation loops are respectively coupled between an output terminal of the main error amplifier and an output terminal of the first buffer. The main zero compensation loops provide different zero compensations.
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公开(公告)号：US11641161B1
公开(公告)日：2023-05-02
申请号：US17692022
申请日：2022-03-10
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A charge pump circuit is provided. The charge pump circuit includes a dual-phase charge pump, a first load switch, a second load switch, and a control circuit. The dual-phase charge pump performs a voltage pumping operation on a power source in response to a first clock and a second clock to generate a first pumping voltage at a first node and a second pumping voltage at a second node. The control circuit controls the first load switch in response to a third clock and controls the second load switch in response to a fourth clock. In a period during which the first load switch is turned off, the second load switch transfers the first pumping voltage to an output terminal of the charge pump circuit. In a period during which the second load switch is turned off, the first load switch transfers the second pumping voltage to the output terminal.
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公开(公告)号：US11720132B2
公开(公告)日：2023-08-08
申请号：US17717126
申请日：2022-04-10
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A voltage regulation circuit is provided. The voltage regulation circuit includes an error amplifier, an output transistor, a noise extraction circuit, and a stabilization circuit. The error amplifier provides a control signal in response to changes in a feedback voltage. The output transistor receives an input voltage signal, and adjusts an output voltage signal at an output terminal of the voltage regulation circuit in response to the control signal and the input voltage signal. The noise extraction circuit extracts a noise of the input voltage signal to provide a noise current signal. The stabilization circuit converts the noise current signal into a stable signal. In a high operating frequency range, the stabilization circuit provides the stable signal to a control terminal of the output transistor to cancel interference caused by the noise of the input voltage signal.
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公开(公告)号：US11693439B2
公开(公告)日：2023-07-04
申请号：US17409735
申请日：2021-08-23
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A voltage regulator is provided. The voltage regulator includes a level shifter, a low-pass filter, and a voltage regulating circuit. The level shifter shifts a voltage value of a reference voltage signal to generate a set voltage signal. The low-pass filter filters the set voltage signal to generate a filtered voltage signal. The voltage regulating circuit outputs an output voltage signal according to the filtered voltage signal and adjusts a voltage value of the filtered voltage signal according to a change of the output voltage signal to stabilize a voltage value of the output voltage signal.
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公开(公告)号：US20230155572A1
公开(公告)日：2023-05-18
申请号：US17691094
申请日：2022-03-09
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
IPC分类号： H03H11/04
CPC分类号： H03H11/04
摘要： A low-pass filter circuit is provided. The low-pass filter circuit includes a low-pass filter and a discharging circuit. The low-pass filter receives an input voltage signal through an input terminal of the low-pass filter circuit during a first period, performs a low-pass filter operation on the input voltage signal to generate a filtered voltage signal, and provides the filtered voltage signal to an output terminal of the low-pass filter circuit. The discharging circuit suppresses a leakage current flowing between the output terminal and a reference low voltage in response to the input voltage signal during the first period.
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