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公开(公告)号：US20240243664A1
公开(公告)日：2024-07-18
申请号：US18393734
申请日：2023-12-22
发明人： Yen Hui Wang , Yi-Xian Jan , Chien Hsien Tsai , Kuo-Jen Kuo , Chao-Chung Huang , Cheng-Hsing Li
CPC分类号： H02M3/1582 , H02M1/0009
摘要： A controller of a buck-boost conversion circuit and a mode switching method thereof are provided. The controller control operations of multiple switches of the buck-boost conversion circuit to convert an input voltage into an output voltage and provide an output current. The controller includes a slope compensation circuit, a control loop, and a mode switching circuit. The slope compensation circuit generates a slope compensation signal according to a mode switching signal of a current cycle. The control loop is coupled to the slope compensation circuit and the switches respectively, and is configured to generate multiple switch control signals according to the slope compensation signal, a feedback voltage related to the output voltage, and a current sense signal related to the output current to control the operations of the switches respectively. The mode switching circuit is coupled to the slope compensation circuit and the control loop. The mode switching circuit generates the mode switching signal of a next cycle according to the slope compensation signal and at least one of the switch control signals to control an operation mode of the buck-boost conversion circuit.
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公开(公告)号：US11789045B2
公开(公告)日：2023-10-17
申请号：US17830487
申请日：2022-06-02
发明人： Chao-Chung Huang , Kuo-Jen Kuo , Yi-Xian Jan
CPC分类号： G01R19/0092 , G01R1/203 , G01R19/10 , H03F3/343
摘要： A current sensing circuit includes a filtering circuit, an amplifier, a first resistor, a first transistor and a second transistor. The filtering circuit is coupled to two terminals of a sensing resistor. The amplifier has a first input terminal, a second input terminal and an output terminal. The second input terminal is coupled to the filtering circuit. The first resistor is coupled between the filtering circuit and the first input terminal of amplifier. A control terminal of the first transistor is coupled to the output terminal of amplifier, and its first terminal is coupled to the first input terminal of amplifier and its second terminal is grounded through a second resistor. A control terminal of the second transistor is coupled to the output terminal of amplifier, and its first terminal is coupled to the second input terminal of amplifier and its second terminal is grounded through a third resistor.
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公开(公告)号：US10715114B1
公开(公告)日：2020-07-14
申请号：US16591642
申请日：2019-10-03
发明人： Chao-Chung Huang , Kuo-Jen Kuo , Yi-Xian Jan
摘要： A filter and an operating method thereof are provided. The filter includes a logic circuit, a power circuit and a filter circuit. The logic circuit provides a switching control signal. The power circuit is coupled to the logic circuit. The filter circuit is coupled to the power circuit and the logic circuit. The filter circuit includes an amplifier, a first capacitor and a first transistor. An output end of the amplifier is coupled to the logic circuit, and provides an output signal. The first capacitor is coupled between an input end and output end of the amplifier. The first transistor is connected in parallel with the first capacitor. A control end of the first transistor is coupled to the power circuit. The logic circuit provides a switching control signal to the power circuit according to the output signal. The power circuit supplies a control voltage to the first transistor according to the switching control signal. Therefore, the filter of the present invention and its method of operation can provide an accurate filtered signal output function.
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公开(公告)号：US11139788B2
公开(公告)日：2021-10-05
申请号：US16903438
申请日：2020-06-17
IPC分类号： H03F3/45
摘要： A measuring current generation circuit coupled to a setting resistor is disclosed. The generation circuit includes a first measuring terminal, a second measuring terminal, a first transconductance amplifier, a second transconductance amplifier and an output circuit. The first transconductance amplifier has a first input terminal and a second input terminal. The first input terminal is coupled to one terminal of the setting resistor. The second input terminal is coupled to another terminal of the setting resistor and coupled to the first measuring terminal. The second transconductance amplifier has a third input terminal and a fourth input terminal. The output circuit is coupled to output terminals of the first transconductance amplifier and the second transconductance amplifier respectively and has a first output terminal and a second output terminal. The first output terminal is coupled to the first input terminal. The second output terminal is coupled to the second measuring terminal.
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公开(公告)号：US20210013852A1
公开(公告)日：2021-01-14
申请号：US16903438
申请日：2020-06-17
IPC分类号： H03F3/45
摘要： A measuring current generation circuit coupled to a setting resistor is disclosed. The generation circuit includes a first measuring terminal, a second measuring terminal, a first transconductance amplifier, a second transconductance amplifier and an output circuit. The first transconductance amplifier has a first input terminal and a second input terminal. The first input terminal is coupled to one terminal of the setting resistor. The second input terminal is coupled to another terminal of the setting resistor and coupled to the first measuring terminal. The second transconductance amplifier has a third input terminal and a fourth input terminal. The output circuit is coupled to output terminals of the first transconductance amplifier and the second transconductance amplifier respectively and has a first output terminal and a second output terminal. The first output terminal is coupled to the first input terminal. The second output terminal is coupled to the second measuring terminal.
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